[Event "St.Petersburg Herold"]
[Site "?"]
[Date "1906.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1906.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "8/3Kp3/1p2R3/1p1k2Pp/1P1p3P/3P1P2/5P2/8 w - - 0 1"]

1. Re1 e5 2. Rf1 e4 3. fxe4+ Ke5 4. f4# *

[Event "Deutsche Schachzeitung"]
[Site "?"]
[Date "1907.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1907.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "6B1/B7/6kP/2R5/8/5K2/8/8 w - - 0 1"]

1. Rd5 {/\Kg4(#3)} 1. ... Kf6 ( 1. ... Kxh6 2. Bd4 {/\Kg4(#2)} 2. ... Kg6 
3. Kg4 {/\Rd6#(#1)} 3. ... Kh6 4. Rd6# ) 2. Be3 Ke7 3. Bg5+ Ke8 4. Rd8# *

[Event "Deutsche Schachzeitung"]
[Site "?"]
[Date "1908.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1908.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "4k3/8/8/3PPPP1/4K1Q1/8/8/8 w - - 0 1"]

1. Qg1 {I prize for sending} 1. ... Ke7 ( 1. ... Kf7 2. Qa7+ Kg8 3. g6 ) (
1. ... Kd7 2. Qa7+ Kc8 3. e6 ) 2. Qa7+ Ke8 ( 2. ... Kf8 3. f6 ) ( 2. ... 
Kd8 3. d6 ) 3. e6 Kd8 ( 3. ... Kf8 4. Qf7# ) 4. Qd7# *

[Event "Deutsche Schachzeitung"]
[Site "?"]
[Date "1908.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1908.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "3N4/1rp2Q2/2R5/1p2k2p/3p2p1/8/6p1/6K1 w - - 0 1"]

1. Ne6 Rb8 ( 1. ... Ra7 2. Qf4+ Kd5 3. Qxd4+ Kxc6 4. Nd8# ) ( 1. ... Kd5 
2. Qf5+ ( 2. Nf4+ Kxc6 3. Qe6+ Kc5 4. Nd3# ) ) ( 1. ... Ke4 2. Nc5+ Ke5 3.
 Qf6+ ) 2. Ng5 d3 3. Rc5+ Kd4 4. Qf2# *

[Event "Deutsche Schachzeitung"]
[Site "?"]
[Date "1908.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1908.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "3bQ3/2p3p1/1p2P3/rp3pR1/b3pk1P/1PN5/7P/4K3 w - - 0 1"]

1. Qc6 Bxg5 ( 1. ... Ke5 2. Rxf5+ Kxf5 ( 2. ... Kd4 3. Ne2+ ) 3. Qxe4+ Kf6
4. Nd5# ) ( 1. ... Kf3 2. Rg3+ Kf4 3. Qd5 ) ( 1. ... Ke3 2. Ne2 ) ( 1. ...
 Bf6 2. Qxe4+ fxe4 3. Ne2+ Ke3 4. Rg3# ) 2. Qxc7+ Ke3 3. Nd1+ Kd4 4. Qd6# 
*

[Event "Deutsche Schachzeitung"]
[Site "?"]
[Date "1908.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 5"]
[Result "*"]
[EventDate "1908.??.??"]
[SetUp "1"]
[PlyCount "9"]
[FEN "5B2/8/6p1/1P1P1kP1/3p3K/3P1P2/6N1/8 w - - 0 1"]

1. Kg3 Ke5 ( 1. ... Kxg5 2. Bg7 Kf5 ( 2. ... Kh5 3. Kf4 g5+ 4. Kf5 g4 5. 
fxg4# ) 3. Kh4 g5+ 4. Kh5 g4 5. fxg4# ) 2. Nf4 Kf5 3. Ne6 Ke5 4. f4+ Kxd5 
( 4. ... Kf5 5. Ng7# ( 5. Nxd4# ) ) 5. Nc7# *

[Event "Narodni Politika"]
[Site "?"]
[Date "1908.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1908.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "3b4/1K6/4P3/4P3/5P2/2P1k1P1/2Q4P/7B w - - 0 1"]

1. e7 Bxe7 ( 1. ... Ba5 2. e8=Q Bxc3 3. Qb5 Bd2 4. Qcc5# ) 2. Bd5 Bb4 ( 
2. ... Bh4 3. gxh4 Kxf4 4. Qe4# ) 3. cxb4 Kd4 4. Qd2# *

[Event "Deutsche Schachzeitung"]
[Site "?"]
[Date "1909.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1909.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "8/p7/Pp6/pP6/2k1N1P1/2p5/1PQP4/3K4 w - - 0 1"]

1. Nxc3 a4 ( 1. ... Kb4 2. Nb1 {/\Na3(#2)} 2. ... a4 3. Na3 {/\Qc3#(#1)} 
3. ... Ka5 4. Qc3# ) ( 1. ... Kc5 2. Qd3 a4 ( 2. ... Kb4 3. Na4 Kxa4 4. 
Qc4# ) 3. Na2 a3 4. b4# ) ( 1. ... Kd4 2. Ne2+ Kd5 3. Qc6+ Ke5 4. d4# ) 2.
 Qe4+ Kb3 ( 2. ... Kc5 3. Qf4 a3 4. b4# ) 3. Qxa4+ ( 3. Kc1 {/\Qxa4#(#1)} 
3. ... a3 4. Qa4# ) 3. ... Kxb2 4. Qa2# *

[Event "Deutsche Schachzeitung"]
[Site "?"]
[Date "1909.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1909.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "8/7K/p2Q2p1/rPP5/1r1pk3/p4p1R/1Pp2P2/1bn3N1 w - - 0 1"]

1. Nxf3 {/\Qxg6+(#3)} 1. ... a2 ( 1. ... Rba4 2. Nh4 {/\Re3+(#2)} 2. ... 
a2 ( 2. ... Rc4 3. Qxg6+ ( 3. Re3+ dxe3 4. f3# ) 3. ... Kd5 4. Qf5# ) ( 
2. ... g5 3. Qe6+ ( 3. Re3+ dxe3 4. f3# ) 3. ... Kf4 4. Qf5# ( 4. Rf3# ) (
4. Ng2# ) ( 4. Ng6# ) ) 3. Re3+ dxe3 4. f3# ) ( 1. ... Rb3 2. Qxd4+ Kf5 3.
 Qe5+ Kg4 4. Rg3# ) ( 1. ... Kd3 2. Nxd4+ Kd2 3. Qf4+ Kd1 4. Rh1# ) 2. 
Qxg6+ Kd5 ( 2. ... Kf4 3. Qg5+ ( 3. Nh4 {/\Qf5#(#1)} 3. ... a1=Q 4. Qf5# )
( 3. Rg3 {/\Qg4#(#1)} 3. ... a1=Q 4. Qg4# ) 3. ... Ke4 4. Nd2# ) 3. Qc6+ 
Kc4 4. Nd2# ( 4. Ne5# ) *

[Event "Deutsche Schachzeitung"]
[Site "?"]
[Date "1909.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1909.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "1r6/3pN3/1p4p1/1N4P1/4kPR1/P1p4P/2p1PP2/2K5 w - - 0 1"]

1. a4 Ra8 ( 1. ... d5 2. f5+ Ke5 3. Nc6+ Kxf5 4. Nbd4# ) ( 1. ... d6 2. 
Na3 {/\f5+(#2)} 2. ... b5 ( 2. ... Ra8 3. f5+ ( 3. Nxc2 {/\f3#(#1)} 3. ...
 Ra7 4. f3# ) 3. ... Ke5 4. Nc4# ) 3. Nxc2 {/\f3#(#1)} 3. ... b4 4. f3# ) 
2. Nd6+ Kd4 3. f5+ Kc5 ( 3. ... Ke5 4. Nf7# ( 4. Nc4# ) ) 4. Nb7# *

[Event "Congress DSB"]
[Site "?"]
[Date "1910.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1910.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "2K5/1pp1Q2p/3p4/1P2N3/p4kB1/n6p/2PPp2b/r3rb2 w - - 0 1"]

1. Qh4 {/\Nd3+(#3)} 1. ... Rab1 ( 1. ... Nxc2 2. Bf3+ Kxe5 ( 2. ... Kf5 3.
 Nd7 {/\Qf6#(#1)} 3. ... Rab1 ( 3. ... Be5 4. Qg4# ) 4. Qf6# ( 4. Qg4# ) )
3. Qg5+ Kd4 ( 3. ... Ke6 4. Bd5# ) 4. Qd5# ) ( 1. ... dxe5 2. Be6+ Kf3 3. 
Bd5+ e4 4. Bxe4# ) ( 1. ... Kxe5 2. Qg5+ Kd4 ( 2. ... Ke4 3. Qe3+ Kd5 4. 
Be6# ) 3. Be6 {/\Qe3#(#1)} 3. ... Rab1 ( 3. ... Nxc2 4. Qd5# ) 4. Qe3# ( 
4. Qd5# ) ) ( 1. ... Bg3 2. Qf6+ Ke4 3. Nc6 {/\Qd4#(#1)} 3. ... Rab1 ( 
3. ... Nxc2 4. Qf5# ( 4. Qf3# ) ) ( 3. ... bxc6 4. Bf3# ) ( 3. ... Be5 4. 
Qf3# ( 4. Bf3# ) ) 4. Qd4# ( 4. Qf5# ) ( 4. Qf3# ) ( 4. Bf3# ) ) ( 1. ... 
h5 2. Ng6+ ( 2. Nd3+ Ke4 3. Be6+ Kf3 ( 3. ... Bf4 4. Qxf4# ) 4. Bd5# ) 
2. ... Ke4 3. Be6+ Kf3 ( 3. ... Bf4 4. Qxf4# ) 4. Bd5# ) 2. Nd3+ ( 2. Bf3+
Kxe5 ( 2. ... Kf5 3. Nd7 {/\Qf6#(#1)} 3. ... Nxc2 ( 3. ... Be5 4. Qg4# ) 
4. Qf6# ( 4. Qg4# ) ) 3. Qg5+ Kd4 ( 3. ... Ke6 4. Bd5# ) 4. Qd5# ) 2. ... 
Ke4 3. Be6+ Kf3 ( 3. ... Bf4 4. Qxf4# ) 4. Bd5# ( 4. Qg4# ) *

[Event "Deutsches Wochenschach"]
[Site "?"]
[Date "1910.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 5"]
[Result "*"]
[EventDate "1910.??.??"]
[SetUp "1"]
[PlyCount "9"]
[FEN "4n2N/7P/6R1/5p2/5k2/3Pp3/bbP1B3/3K3R w - - 0 1"]

1. Nf7 {/\Rf1#(#1)} 1. ... Bxf7 2. h8=Q {/\Rf1#(#1)} 2. ... Bxh8 3. Rh4+ 
Ke5 4. d4+ Kd5 5. c4# *

[Event "Deutsches Wochenschach"]
[Site "?"]
[Date "1910.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 7"]
[Result "*"]
[EventDate "1910.??.??"]
[SetUp "1"]
[PlyCount "13"]
[FEN "Bn6/p1B2nr1/k7/P3RpP1/2Pr1p2/p3P1N1/1Ppp1K1P/q1bb4 w - - 0 1"]

1. b4 fxg3+ 2. hxg3 Rf4+ 3. gxf4 Qxe5 4. fxe5 Nd6 5. exd6 Rxc7 6. dxc7 Bf3
7. cxb8=N# *

[Event "Deutsche Schachzeitung"]
[Site "?"]
[Date "1910.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 5"]
[Result "*"]
[EventDate "1910.??.??"]
[SetUp "1"]
[PlyCount "9"]
[FEN "8/k1p5/2p1p3/K1p1P3/R1P5/1R6/1P6/8 w - - 0 1"]

1. Ra1 Ka8 2. Ka4 Ka7 3. Ka3 Ka6 4. Ka2 Ka5 5. Kb1# *

[Event "Deutsche Schachzeitung"]
[Site "?"]
[Date "1910.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1910.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "4B3/nN6/p4q2/Pp1N1p2/k7/2P1p1r1/K2P4/8 w - - 0 1"]

{/\Nb6+(#2)} 
1. Bf7 {/\Nb6+(#2)} 1. ... b4 ( 1. ... Qxc3 2. Nxc3+ Kb4 3. Bb3 {
/\Nd5#(#1)} 3. ... Nc6 4. Nd5# ) ( 1. ... Qe6 2. Bxe6 {/\Nb6#(#1)} 2. ... 
Nc8 ( 2. ... b4 3. Bd7+ Nc6 ( 3. ... Nb5 4. Nb6# ) 4. Bxc6# ) 3. Nb6+ ( 3.
 Nb4 {/\Bb3#(#1)} 3. ... Na7 4. Bb3# ) ( 3. Nf4 {/\Bb3#(#1)} 3. ... b4 ( 
3. ... Na7 4. Bb3# ) 4. Bd7# ) ( 3. Nf6 {/\Bb3#(#1)} 3. ... b4 ( 3. ... 
Na7 4. Bb3# ) 4. Bd7# ) ( 3. Nc7 {/\Bb3#(#1)} 3. ... b4 4. Bb3# ( 4. Bd7# 
) ) ( 3. Nxe3 {/\Bb3#(#1)} 3. ... b4 ( 3. ... Na7 4. Bb3# ) 4. Bd7# ) ( 3.
 Ne7 {/\Bb3#(#1)} 3. ... b4 ( 3. ... Na7 4. Bb3# ) 4. Bd7# ) ( 3. Bxf5 {
/\Bc2#(#1)} 3. ... b4 ( 3. ... Na7 4. Nb6# ( 4. Bc2# ) ) ( 3. ... e2 4. 
Bc2# ) 4. Bd7# ) 3. ... Nxb6 4. Bb3# ) ( 1. ... Qxf7 2. Nc5+ Kxa5 3. Nb3+ 
Ka4 4. Nb6# ) 2. Be8+ Nc6 ( 2. ... Nb5 3. Nc5+ Kxa5 4. cxb4# ) 3. Nb6+ Kb5
4. c4# *

[Event "Deutsche Schachzeitung"]
[Site "?"]
[Date "1910.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1910.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "8/8/1Q4bp/p1R1pP2/P1Bk4/8/7P/7K w - - 0 1"]

1. Be2 {/\Rc4+(#2)} 1. ... Ke3 ( 1. ... Ke4 2. Rc4+ Kxf5 3. Bg4+ Kg5 4. 
Qd8# ) ( 1. ... e4 2. Rb5+ Kc3 3. Rb2 {/\Qf6#(#1)} 3. ... e3 4. Qf6# ) 2. 
Qb3+ Kd2 ( 2. ... Kd4 3. Qc3+ ( 3. Rc4+ Kd5 4. Qd1# ( 4. Qd3# ) ) ( 3. 
Rd5+ Ke4 4. Qf3# ) 3. ... Ke4 4. Qxe5# ) ( 2. ... Ke4 3. Qf3+ ( 3. Qg3 {
/\Qxe5#(#1)} 3. ... Kd4 4. Qxe5# ) 3. ... Kd4 4. Rc4# ( 4. Rd5# ) ) ( 
2. ... Kf4 3. Qg3+ Ke4 4. Qxe5# ) 3. Rc2+ Ke1 4. Qg3# *

[Event "Tidskrift for Schack"]
[Site "?"]
[Date "1910.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1910.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "2R2N2/7p/K4P1P/3k4/p1p2p2/B1P2PP1/1n1PP1p1/rr6 w - - 0 1"]

{/\Rd8+(#3)} 
1. d4 {/\Rd8+(#3)} 1. ... Ra2 ( 1. ... cxd3 2. e4+ Ke5 ( 2. ... fxe3 3. 
Be7 {/\Rc5#(#1)} 3. ... Ra2 4. Rc5# ) 3. Rc5+ Kd6 ( 3. ... Kxf6 4. Rf5# ) 
4. e5# ) 2. Rd8+ Kc6 3. d5+ ( 3. Ne6 {/\d5#(#1)} 3. ... Raa1 ( 3. ... Rd1 
4. Rd6# ) 4. d5# ( 4. Rd6# ) ) 3. ... Kc7 4. Ne6# *

[Event "Tidskrift for Schack"]
[Site "?"]
[Date "1910.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1910.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "1Q6/p1K1B3/P4pp1/3P4/4Pk2/5p2/1PP2P2/8 w - - 0 1"]

1. Qc8 Kxe4 ( 1. ... Ke5 2. Bd6+ Kd4 ( 2. ... Kxe4 3. Qg4+ Kxd5 4. c4# ) 
3. Qe8 {/\Qa4#(#1)} 3. ... Kc4 4. Qa4# ) ( 1. ... Kg5 2. Qh3 {/\Kd6(#2)} 
2. ... Kf4 3. Qh4+ Ke5 4. Bxf6# ) ( 1. ... f5 2. Qe6 Kg4 ( 2. ... fxe4 3. 
Bh4 e3 ( 3. ... g5 4. Bg3# ) 4. fxe3# ) 3. Qxg6+ Kf4 ( 3. ... Kh3 4. Qg3# 
) 4. Qxf5# ) 2. Qg4+ Kxd5 ( 2. ... Ke5 3. Bd6+ Kxd5 4. c4# ) 3. c4+ Ke5 4.
 Bd6# *

[Event "Bohemia"]
[Site "?"]
[Date "1911.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1911.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "4r3/n1p1p2p/r1P1N1p1/PP2p3/4k1p1/8/pR1PP3/K4Q2 w - - 0 1"]

1. Qf7 {/\Ng5+(#3)} 1. ... Rxa5 ( 1. ... Rb6 2. Ng5+ Kd4 3. e3+ Kc5 ( 
3. ... Kd3 4. Qf1# ) 4. Ne4# ) ( 1. ... Nxb5 2. Rxb5 {/\Nc5+(#2)} 2. ... 
Rxa5 ( 2. ... Rxc6 3. Ng5+ Kd4 4. Qd5# ) 3. Nc5+ ( 3. Ng5+ Kd4 4. Qd5# ) 
3. ... Kd4 4. e3# ) ( 1. ... Rc8 2. Rb4+ ( 2. Ng5+ Kd4 3. e3+ Kc5 ( 3. ...
 Kd3 4. Qf1# ) 4. Ne4# ) 2. ... Kd5 3. Nf4+ Kc5 ( 3. ... Kd6 4. Qd5# ) 4. 
Qxe7# ) 2. Rc2 {/\Nc5+(#2)} 2. ... Ra4 ( 2. ... Rxb5 3. Ng5+ Kd4 4. Rc4# (
4. Qc4# ) ) ( 2. ... Kd5 3. Nxc7+ ( 3. Nf4+ Kd4 ( 3. ... Kd6 4. Qe6# ( 4. 
Qd5# ) ) 4. Rc4# ( 4. Qd5# ) ( 4. Qc4# ) ) ( 3. Nc5+ Kd4 ( 3. ... Kd6 4. 
Ne4# ( 4. Nb7# ) ( 4. Qe6# ) ) ( 3. ... e6 4. Qd7# ) 4. Rc4# ( 4. e3# ) ( 
4. Qc4# ) ) ( 3. Ng5+ Kd4 ( 3. ... Kd6 4. Qe6# ( 4. Ne4# ) ) ( 3. ... e6 
4. Qd7# ) 4. Rc4# ( 4. Qc4# ) ) 3. ... Kd4 ( 3. ... Kd6 4. Nxe8# ) 4. Rc4#
( 4. Qd5# ) ( 4. Qc4# ) ) 3. Nc5+ Kd4 4. e3# *

[Event "Deutsche Schachblatter"]
[Site "?"]
[Date "1911.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 5"]
[Result "*"]
[EventDate "1911.??.??"]
[SetUp "1"]
[PlyCount "9"]
[FEN "r2n4/5p2/8/2p4B/p7/2B5/b2K4/1kN5 w - - 0 1"]

1. Bg4 {/\Bf5#(#1)} 1. ... Be6 2. Bf3 {/\Be4#(#1)} 2. ... Bf5 ( 2. ... f5 
3. Be2 {/\Bd3#(#1)} 3. ... c4 ( 3. ... Bc4 4. Bxc4 {/\Ba2#(#1)} 4. ... a3 
5. Ba2# ( 5. Bd3# ) ) ( 3. ... Bb3 4. Bd3+ Bc2 5. Bxc2# ) 4. Bd1 {
/\Bc2#(#1)} 4. ... a3 5. Bc2# ) 3. Bd5 {/\Ba2#(#1)} 3. ... c4 4. Bxc4 {
/\Ba2#(#1)} 4. ... a3 ( 4. ... Be6 5. Bd3# ) 5. Ba2# *

[Event "Deutsches Wochenschach"]
[Site "?"]
[Date "1911.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1911.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "1R6/8/5p1K/8/3N1BB1/P2P4/1P2Ppbp/4krbq w - - 0 1"]

1. Rb3 {/\Rc3(#2)} 1. ... Bh3 2. Rc3 {/\Rc1#(#1)} 2. ... Qc6 3. Rxc6 {
/\Rc1#(#1)} 3. ... Kd1 4. Rc1# *

[Event "Deutsche Schachzeitung"]
[Site "?"]
[Date "1911.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1911.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "8/2p1Nnp1/2pP1p1n/rPN1k1pP/p7/3R2P1/2PPK3/8 w - - 0 1"]

{/\Rd5+(#3)} 
1. c3 {/\Rd5+(#3)} 1. ... a3 ( 1. ... Rxb5 2. Re3+ Kxd6 3. Re6+ Kxc5 4. 
Rxc6# ) ( 1. ... Ra8 2. bxc6 {/\Rd5#(#1)} 2. ... f5 3. Re3+ Kxd6 ( 3. ... 
Kf6 4. Nd7# ( 4. Re6# ) ( 4. Nd5# ) ) 4. Nb7# ) ( 1. ... f5 2. Ng6+ Kf6 3.
 Nd7+ Ke6 4. Ngf8# ) 2. Rd5+ cxd5 3. d4+ Kxd6 4. Nc8# *

[Event "Libausche Zeitung"]
[Site "?"]
[Date "1911.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1911.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "8/p1pN4/2P5/kB6/P3p3/Kp6/1P2P3/8 w - - 0 1"]

1. Ba6 Kxa6 ( 1. ... e3 2. Bd3 a6 3. Bc2 bxc2 4. b4# ) 2. Kb4 {/\Nb8+(#2)}
2. ... e3 3. Nb8+ Kb6 4. a5# *

[Event "Berliner Lokal Anzeiger"]
[Site "?"]
[Date "1914.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 6"]
[Result "*"]
[EventDate "1914.??.??"]
[SetUp "1"]
[PlyCount "11"]
[FEN "7n/1pK2p2/1P3P2/3k2P1/Bp3p2/1P1P1N1P/8/8 w - - 0 1"]

1. Bb5 {/\Bc4+(#2)} 1. ... Ke6 2. Bc4+ Kf5 3. Bd5 {/\Be4+(#3)} 3. ... Kg6 
4. Be4+ Kh5 5. Bf5 Ng6 6. Bg4# *

[Event "Falkirk Herald"]
[Site "?"]
[Date "1915.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1915.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "2n5/p3p3/P2pp3/Q2p4/p2k1N1P/3B1P1p/KP4bP/8 w - - 0 1"]

1. Qe1 a3 ( 1. ... Nb6 2. Qe2 {/\Nxe6#(#1)} 2. ... Kc5 3. Nxe6+ Kb4 ( 
3. ... Kc6 4. Bb5# ) 4. Qd2# ( 4. Qe1# ) ) ( 1. ... Kc5 2. Qc3+ Kb6 3. 
Nxe6 {/\Qc7#(#1)} 3. ... a3 4. Qc7# ) ( 1. ... Bf1 2. Nxe6+ Kxd3 3. Nd4 {
/\Qc3#(#1)} 3. ... a3 4. Qc3# ) ( 1. ... Bh1 2. Qg1+ Ke5 3. Nh5 {/\f4#(#1)
} 3. ... a3 ( 3. ... d4 4. Qg5# ) ( 3. ... Bxf3 4. Qg7# ) 4. f4# ( 4. Qe3#
) ( 4. Qg7# ) ) 2. Bb5 {/\Qc3#(#1)} 2. ... Kc5 3. Qa5 {/\Nxe6#(#1)} 3. ...
 axb2 ( 3. ... Kd4 4. Qc3# ) ( 3. ... d4 4. b4# ) 4. Nxe6# *

[Event "Novoe vremya"]
[Site "?"]
[Date "1915.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 5"]
[Result "*"]
[EventDate "1915.??.??"]
[SetUp "1"]
[PlyCount "9"]
[FEN "1R1b4/p6K/kpPp3p/1n2p3/1p6/1NpB1N2/P7/7r w - - 0 1"]

{/\axb5#(#1)} 
1. a4 {/\axb5#(#1)} 1. ... bxa3 2. Nfd4 {/\Bxb5#(#1)} 2. ... exd4 3. c7 {
/\c8Q#(#1)} 3. ... Bxc7 4. Bf5 {/\Bc8#(#1)} 4. ... a2 5. Bc8# *

[Event "Westminster Saturday Gazette"]
[Site "?"]
[Date "1917.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1917.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "2Nbr1b1/n2p4/1p5P/1PppPP2/K2k4/1P4N1/2P4P/4Q3 w - - 0 1"]

1. Ne7 {/\Nf1(#2)} 1. ... Nxb5 ( 1. ... c4 2. Nf1 {/\Qe3#(#1)} 2. ... cxb3
( 2. ... Kc5 3. b4+ ( 3. Qf2+ d4 4. b4# ) ( 3. Qe3+ d4 4. b4# ) 3. ... Kd4
4. Qe3# ) 3. Qe3+ ( 3. Kxb3 {/\Qe3#(#1)} 3. ... Nc6 ( 3. ... Kc5 4. Qb4# )
4. Qe3# ) 3. ... Kc4 4. cxb3# ( 4. Nd2# ) ) ( 1. ... Bxe7 2. f6 {
/\Nf5#(#1)} 2. ... c4 ( 2. ... Be6 3. Nf1 {/\Qe3#(#1)} 3. ... Nc6 4. Qe3# 
) 3. Nf5+ Kc5 4. b4# ( 4. Qb4# ) ) ( 1. ... Rxe7 2. Nh5 {/\Qd2+(#2)} 
2. ... Nc6 3. Qd2+ Ke4 4. Qf4# ) 2. Ne2+ Ke3 ( 2. ... Kxe5 3. Qg3+ Ke4 ( 
3. ... Kf6 4. Qg7# ) 4. Qf4# ) 3. Nc3+ Kd4 ( 3. ... Kf3 4. Qg3# ) 4. Nxb5#
*

[Event "British Chess Magazine"]
[Site "?"]
[Date "1918.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1918.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "1K6/p7/b1Pp4/3P4/1Q5P/1p2N2N/1r1rp3/4k3 w - - 0 1"]

1. Nf2 {/\Ne4(#3)} 1. ... Bb5 ( 1. ... Rc2 2. Nd3+ Bxd3 3. Qf4 {/\Qg3#(#1)
} 3. ... a5 ( 3. ... Rd1 4. Ng2# ) 4. Qg3# ) ( 1. ... Kxf2 2. Qf4+ Kg1 3. 
Qg3+ Kh1 4. Qg2# ) 2. Ne4 {/\Qxd6(#2)} 2. ... a5 3. Qxd6 {/\Qg3#(#1)} 
3. ... a4 4. Qg3# *

[Event "Kagans Neueste Schachnachrichten"]
[Site "?"]
[Date "1921.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1921.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "5B2/6Qp/2p4P/1nNbq1Pp/1P1k4/p1p1N1P1/2P2P2/K7 w - - 0 1"]

{/\gxh7(#3)} 
1. g6 {/\gxh7(#3)} 1. ... a2 ( 1. ... Nc7 2. Qxe5+ Kxe5 3. Bg7+ Kd6 4. 
Nf5# ) ( 1. ... Bc4 2. Nf5+ ( 2. gxh7 {/\Qxe5+(#2)} 2. ... a2 3. Qxe5+ ( 
3. h8=Q {/\Qxe5#(#1)} 3. ... Nd6 ( 3. ... Qf6 4. Qxf6# ) ( 3. ... Qxg7 4. 
Bxg7# ( 4. Qxg7# ) ) 4. Qxe5# ) ( 3. h8=B {/\Qxe5#(#1)} 3. ... Nd6 ( 
3. ... Qf6 4. Qxf6# ) ( 3. ... Qxg7 4. Bfxg7# ( 4. Bhxg7# ) ) 4. Qxe5# ) 
3. ... Kxe5 4. h8=Q# ( 4. h8=B# ) ) 2. ... Kd5 3. Qf7+ ( 3. Qg8+ Qe6 4. 
Qxe6# ) 3. ... Qe6 4. Qxe6# ) ( 1. ... Bf3 2. Nd3 {/\Qxe5#(#1)} ( 2. Nd7 {
/\Qxe5#(#1)} 2. ... Qf6 ( 2. ... Qxg7 3. Bxg7+ Ke4 4. Nc5# ) 3. Qxf6+ Ke4 
4. Nc5# ( 4. Qe5# ) ( 4. Qf4# ) ) ( 2. gxh7 {/\Qxe5+(#2)} 2. ... a2 3. 
Qxe5+ ( 3. h8=Q {/\Qxe5#(#1)} 3. ... Nd6 ( 3. ... Qf6 4. Qxf6# ) ( 3. ... 
Qxg7 4. Bxg7# ( 4. Qxg7# ) ) ( 3. ... Be4 4. Ne6# ( 4. Nb3# ) ( 4. Qxe5# )
) 4. Qxe5# ) ( 3. h8=B {/\Qxe5#(#1)} 3. ... Nd6 ( 3. ... Qf6 4. Qxf6# ) ( 
3. ... Qxg7 4. Bfxg7# ( 4. Bhxg7# ) ) ( 3. ... Be4 4. Ne6# ( 4. Nb3# ) ( 
4. Qxe5# ) ) 4. Qxe5# ) 3. ... Kxe5 4. h8=Q# ( 4. h8=B# ) ) 2. ... Qf6 ( 
2. ... Qxg7 3. Bxg7+ Ke4 4. Nc5# ) 3. Qxf6+ Ke4 4. Nc5# ( 4. Qe5# ) ( 4. 
Qf4# ) ) ( 1. ... Bg8 2. Qh8 {/\Bg7(#2)} 2. ... a2 ( 2. ... Nd6 3. Qxe5+ 
Kxe5 4. Bg7# ) ( 2. ... Qxh8 3. g7 {/\gxh8Q#(#1)} 3. ... a2 ( 3. ... Qxg7 
4. Bxg7# ) 4. gxh8=Q# ( 4. gxh8=B# ) ) 3. Bg7 {/\Bxe5#(#1)} 3. ... Nd6 ( 
3. ... Qf6 4. Bxf6# ) ( 3. ... Qxg7 4. Qxg7# ) 4. Bxe5# ) ( 1. ... hxg6 2.
 h7 {/\Qxe5+(#2)} 2. ... a2 3. Qxe5+ ( 3. h8=Q {/\Qxe5#(#1)} 3. ... Nd6 ( 
3. ... Be4 4. Ne6# ( 4. Nb3# ) ( 4. Qxe5# ) ) ( 3. ... Qf6 4. Qxf6# ) ( 
3. ... Qxg7 4. Bxg7# ( 4. Qxg7# ) ) 4. Qxe5# ) ( 3. h8=B {/\Qxe5#(#1)} 
3. ... Nd6 ( 3. ... Be4 4. Ne6# ( 4. Nb3# ) ( 4. Qxe5# ) ) ( 3. ... Qf6 4.
 Qxf6# ) ( 3. ... Qxg7 4. Bfxg7# ( 4. Bhxg7# ) ) 4. Qxe5# ) 3. ... Kxe5 4.
 h8=Q# ( 4. h8=B# ) ) 2. gxh7 {/\Qxe5+(#2)} 2. ... Nd6 3. Qxe5+ Kxe5 4. 
Bg7# ( 4. h8=Q# ) ( 4. h8=B# ) *

[Event "Shakhmatny listok"]
[Site "?"]
[Date "1922.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1922.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "2b2r2/1p1pPk1p/1P1P2pP/1K4P1/1P1N1P2/3B4/2P5/8 w - - 0 1"]

1. Ka4 {/\Bc4+(#3)} 1. ... Ke8 ( 1. ... Rg8 2. Bc4+ Ke8 3. Nb5 {/\Nc7#(#1)
} 3. ... Rf8 4. Nc7# ) 2. Nb5 {/\Nc7+(#2)} 2. ... Kf7 ( 2. ... Rf6 3. Nc7+
Kf7 4. e8=Q# ) 3. Bc4+ Ke8 4. Nc7# *

[Event "British Chess Magazine"]
[Site "?"]
[Date "1925.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1925.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "5r2/p1bp2p1/Ppkp1RP1/1N6/4P3/PP1BpPK1/4P3/8 w - - 0 1"]

1. f4 {/\Nxa7+(#3)} 1. ... Bb8 ( 1. ... Re8 2. Nxa7+ Kc5 3. b4+ Kd4 4. 
Nb5# ) ( 1. ... Ra8 2. b4 {/\Nd4#(#1)} 2. ... Bb8 3. Rf5 Bc7 ( 3. ... d5 
4. exd5# ) 4. Nd4# ) 2. Rxf8 {/\Rc8+(#2)} 2. ... Bc7 3. Rc8 {/\Rxc7#(#1)} 
3. ... Kc5 4. Rxc7# *

[Event "Deutsches Wochenschach"]
[Site "?"]
[Date "1925.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1925.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "3k4/p2Pn1p1/P3P1P1/1K1R4/8/2PN3n/3b4/3Q4 w - - 0 1"]

1. Qh5 {/\Qh8+(#3)} 1. ... Bc1 ( 1. ... Bh6 2. Ne5 {/\Nf7+(#2)} 2. ... Nc6
( 2. ... Nf2 3. Nf7+ Kc7 4. Qe5# ( 4. d8=Q# ) ) ( 2. ... Ng5 3. Qh2 Kc7 ( 
3. ... Nc6 4. Nxc6# ) ( 3. ... Ne4 4. Nf7# ) 4. d8=Q# ( 4. Nc6# ) ( 4. 
Nf7# ) ) 3. Nxc6+ Kc7 4. Qe5# ( 4. d8=Q# ) ) ( 1. ... Nxg6 2. e7+ ( 2. 
Qxg6 {/\e7+(#2)} 2. ... Bc1 ( 2. ... Bg5 3. Qe8+ ( 3. Kc6 {/\Qe8#(#1)} 
3. ... Ke7 ( 3. ... Bf4 4. Qe8# ) 4. d8=Q# ) 3. ... Kc7 4. Qc8# ) 3. e7+ (
3. Qe8+ Kc7 4. Qc8# ( 4. d8=Q# ) ) ( 3. Kc6 {/\Qe8#(#1)} 3. ... Bd2 ( 
3. ... Ke7 4. d8=Q# ) 4. Qe8# ) 3. ... Kc7 ( 3. ... Kxe7 4. d8=Q# ) 4. 
Qd6# ( 4. d8=Q# ) ) 2. ... Kxe7 ( 2. ... Nxe7 3. Qe8+ Kc7 4. d8=Q# ) 3. 
d8=Q+ Ke6 ( 3. ... Kf7 4. Qf5# ) 4. Qxg6# ( 4. Qf5# ) ) 2. Qh8+ Ng8 3. 
Qxg8+ Kc7 ( 3. ... Ke7 4. d8=Q# ( 4. d8=B# ) ) 4. Qc8# ( 4. d8=Q# ) *

[Event "Touriney British Union Problems"]
[Site "?"]
[Date "1925.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1925.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "rn6/p1p1b3/P1n1P1pP/1KNp2p1/3k1pP1/2p3B1/4PP1p/7Q w - - 0 1"]

{/\Bxf4(#2)} 
1. Qc1 {/\Bxf4(#2)} 1. ... Nd7 ( 1. ... Na5 2. e3+ Ke5 3. exf4+ Kd4 ( 
3. ... Kd6 4. f5# ( 4. fxg5# ) ) ( 3. ... Kf6 4. fxg5# ) ( 3. ... gxf4 4. 
Qxf4# ) 4. Qe3# ( 4. Qd1# ) ) ( 1. ... Bxc5 2. Bxf4 {/\Qe3#(#1)} 2. ... 
Ke4 3. f3+ Kd4 4. Qe3# ( 4. Qd1# ) ) 2. Qe3+ fxe3 3. Nb3+ Ke4 4. f3# *

[Event "Muncher Schachzeitung"]
[Site "?"]
[Date "1926.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1926.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "8/b1p5/1p6/4p3/1P1k3P/Q7/B2N4/7K w - - 0 1"]

{/\Nf1(#3)} 
1. Qb3 {/\Nf1(#3)} ( 1. b5 {/\Be6(#3)} 1. ... Bb8 ( 1. ... c6 2. Nf1 {
/\Qe3#(#1)} 2. ... Ke4 ( 2. ... e4 3. Qd6+ Kc3 4. Qd2# ) 3. Be6 {
/\Qe3#(#1)} 3. ... Bb8 4. Qe3# ) ( 1. ... e4 2. Bg8 {/\Nc4(#2)} 2. ... Bb8
( 2. ... Ke5 3. Qg3+ Kd4 ( 3. ... Kf5 4. Qg5# ) 4. Nb3# ) ( 2. ... e3 3. 
Qb2+ Kc5 ( 3. ... Kd3 4. Bc4# ) 4. Ne4# ) 3. Nc4 {/\Qe3#(#1)} 3. ... Ba7 
4. Qe3# ) 2. Be6 {/\Nc4(#2)} 2. ... Ba7 3. Nc4 {/\Qe3#(#1)} 3. ... Bb8 4. 
Qe3# ) 1. ... Bb8 ( 1. ... e4 2. Nb1 {/\Qc3#(#1)} 2. ... Ke5 3. Qg3+ Kd4 (
3. ... Kf5 4. Qg5# ) 4. Qc3# ) 2. Nf1 {/\Qc4#(#1)} 2. ... Ke4 ( 2. ... e4 
3. Qd5+ ( 3. Qb2+ Kd3 4. Qd2# ) 3. ... Kc3 4. Qd2# ) 3. Bb1+ Kd4 ( 3. ... 
Kf4 4. Qg3# ) 4. Qd3# *

[Event "Muncher Schachzeitung"]
[Site "?"]
[Date "1927.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1927.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "8/1K2R3/2Rp4/1P1k1p2/p2P4/2B5/2P2p2/6nb w - - 0 1"]

1. Kc8 {/\Rc5+(#3)} 1. ... a3 ( 1. ... Nf3 2. Rxd6+ Kc4 ( 2. ... Kxd6 3. 
Rd7+ Ke6 4. d5# ) 3. Rc7+ Kxb5 4. Rc5# ) 2. Rc5+ dxc5 3. Re5+ Kc4 ( 3. ...
 Kd6 4. dxc5# ) 4. Rxc5# *

[Event "Zadachi i etyudy"]
[Site "?"]
[Date "1927.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1927.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "1n6/7p/4R2b/q6r/p3N3/P1pkp1P1/Q5P1/3K1n2 w - - 0 1"]

1. Ng5 {/\Rd6+(#2)} 1. ... Qb4 ( 1. ... Qc5 2. Qe2+ Kd4 3. Qg4+ Kd3 4. 
Qe4# ) ( 1. ... Qe5 2. Rxe5 {/\Qd5#(#1)} 2. ... Nc6 ( 2. ... c2+ 3. Qxc2+ 
Kd4 4. Nf3# ) 3. Qe2+ ( 3. Rd5+ Nd4 4. Qe2# ) 3. ... Kd4 4. Nf3# ) ( 
1. ... Qxg5 2. Rd6+ Ke4 ( 2. ... Qd5 3. Rxd5+ Ke4 ( 3. ... Rxd5 4. Qxd5# )
4. Qc4# ) 3. Qc4+ Ke5 ( 3. ... Kf5 4. Qe6# ) 4. Qd5# ( 4. Qe6# ) ) ( 
1. ... c2+ 2. Qxc2+ Kd4 3. Rd6+ Qd5 ( 3. ... Ke5 4. Nf7# ) 4. Nf3# ) 2. 
Qd5+ Qd4 3. Qb5+ Qc4 4. Rd6# *

[Event "Muncher Schachzeitung"]
[Site "?"]
[Date "1928.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1928.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "7n/2K1B1p1/4Pp1b/3k1PPp/4R3/1p2p2P/1P1NP3/n7 w - - 0 1"]

1. Ra4 {/\Ra5+(#3)} 1. ... Nc2 ( 1. ... fxg5 2. Bb4 {/\Ra5+(#2)} 2. ... 
Nc2 ( 2. ... Kd4 3. Bc3+ Kc5 4. Ra5# ) ( 2. ... exd2 3. Bd6 {/\e4#(#1)} 
3. ... Nc2 4. e4# ) 3. Ra5+ Kd4 4. Bc3# ) 2. Ra5+ Kd4 3. Bc5+ Kd5 4. Bxe3#
( 4. Bb6# ) ( 4. Ba7# ) *

[Event "Tourney of British Union Problemists"]
[Site "?"]
[Date "1928.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1928.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "2K3Bk/8/2pP3N/1p5P/1r3p1p/5p2/3r4/3b3Q w - - 0 1"]

{/\Qe5#(#1)} 
1. Qe1 {/\Qe5#(#1)} 1. ... Re4 ( 1. ... Be2 2. Qa1+ Rbb2 ( 2. ... Rdb2 3. 
Qg1 {/\Nf7#(#1)} 3. ... Ra2 ( 3. ... R4b3 4. Qd4# ( 4. Nf7# ) ) 4. Nf7# ) 
3. Qa7 {/\Qh7#(#1)} 3. ... Ra2 ( 3. ... Rdc2 4. Qd4# ( 4. Qh7# ) ) 4. Qh7#
) ( 1. ... Re2 2. Qc3+ Rd4 3. Qxd4+ Re5 4. Qxe5# ) ( 1. ... Rg2 2. Qe5+ 
Rg7 3. Nf5 {/\Qxg7#(#1)} 3. ... Ra4 4. Qxg7# ) ( 1. ... Kg7 2. Qe7+ Kxh6 
3. Qh7+ Kg5 4. Qg6# ) 2. Qxe4 {/\Qh7#(#1)} 2. ... Kg7 3. Qg6+ ( 3. Qh7+ 
Kf6 ( 3. ... Kf8 4. Qf7# ( 4. Qe7# ) ) 4. Qe7# ) 3. ... Kf8 ( 3. ... Kh8 
4. Qh7# ( 4. Qf6# ) ( 4. Nf7# ) ) 4. Qf7# *

[Event "Memorial Zakman"]
[Site "?"]
[Date "1929.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 6"]
[Result "*"]
[EventDate "1929.??.??"]
[SetUp "1"]
[PlyCount "11"]
[FEN "1r1N4/pN2p3/Kp6/3k1p2/1p1P1P1P/b5Pp/P1pQPP2/q7 w - - 0 1"]

1. Qd3 Qxd4 ( 1. ... Rxd8 2. Qb5+ Ke6 3. Nxd8+ Kf6 4. Qe5+ Kg6 5. Qh8 Qxd4
6. h5# ) 2. Qb5+ Qc5 ( 2. ... Ke4 3. Qc6+ Qd5 4. Qxc2+ ) 3. Qd7+ Qd6 4. 
Qxf5+ Qe5 5. Qd3+ Qd4 6. e4# *

[Event "Neue Leipziger Zeitung"]
[Site "?"]
[Date "1929.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1929.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "8/8/3p3K/1QpP4/N1p2p2/p1P1P1Pp/p2P3P/k7 w - - 0 1"]

{/\Qh7(#3)} 
1. Qb7 {/\Qh7(#3)} 1. ... f3 2. Qh7 {/\Qc2(#2)} 2. ... f2 3. Qf5 f1=Q 4. 
Qxf1# *

[Event "Neue Leipziger Zeitung"]
[Site "?"]
[Date "1929.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 5"]
[Result "*"]
[EventDate "1929.??.??"]
[SetUp "1"]
[PlyCount "9"]
[FEN "8/p1N5/rp6/rPk5/1p6/1p1B1N2/pP5B/K7 w - - 0 1"]

{/\Be5(#4)} 
1. Be4 {/\Be5(#4)} 1. ... Ra4 ( 1. ... Ra3 2. Be5 {/\Bd5(#3)} 2. ... R3a4 
( 2. ... R6a4 3. Nd2 {/\Bd3(#2)} 3. ... Ra5 ( 3. ... Ra6 4. Bd3 {
/\Ne4#(#1)} ( 4. Bd5 {/\Ne4#(#1)} 4. ... R3a4 ( 4. ... R6a5 5. Ne4# ) 5. 
Nxb3# ( 5. Ne4# ) ) ( 4. Bc6 {/\Ne6#(#1)} 4. ... R3a4 5. Ne6# ) 4. ... 
R3a4 ( 4. ... R6a5 5. Ne4# ) 5. Nxb3# ( 5. Ne4# ) ) ( 3. ... a5 4. Bf4 Kd4
5. Ne6# ) 4. Bd5 {/\Ne4#(#1)} 4. ... R3a4 ( 4. ... R5a4 5. Ne4# ) 5. Nxb3#
( 5. Ne4# ) ) 3. Bd5 {/\Nd2(#2)} ( 3. Nd2 {/\Bd3(#2)} 3. ... Ra3 ( 3. ... 
R4a5 4. Bd5 {/\Nxb3#(#1)} 4. ... Ra4 ( 4. ... Ra3 5. Ne4# ) 5. Nxb3# ( 5. 
Ne4# ) ) 4. Bd3 {/\Ne4#(#1)} ( 4. Bd5 {/\Ne4#(#1)} 4. ... R3a4 ( 4. ... 
R6a5 5. Ne4# ) 5. Nxb3# ( 5. Ne4# ) ) ( 4. Bc6 {/\Ne6#(#1)} 4. ... R3a4 5.
 Ne6# ) 4. ... R3a4 ( 4. ... R6a5 5. Ne4# ) 5. Nxb3# ( 5. Ne4# ) ) ( 3. 
Ne1 {/\Bd5(#2)} 3. ... Ra3 4. Bd5 {/\Nd3#(#1)} 4. ... R3a4 5. Nd3# ) 
3. ... Ra3 4. Nd2 {/\Ne4#(#1)} ( 4. Nd4 {/\Nde6#(#1)} 4. ... R3a4 ( 4. ...
 R6a5 5. Nde6# ) 5. Nxb3# ( 5. Nde6# ) ) ( 4. Ne1 {/\Nd3#(#1)} 4. ... R3a4
5. Nd3# ) ( 4. Ng5 {/\Ne4#(#1)} 4. ... R3a4 5. Ne4# ( 5. Nge6# ) ) 4. ... 
R3a4 ( 4. ... R6a5 5. Ne4# ) 5. Nxb3# ( 5. Ne4# ) ) 2. Bd5 {/\Be5(#3)} ( 
2. Be5 {/\Bd5(#3)} 2. ... Ra3 ( 2. ... Kc4 3. Nd2+ ( 3. Bd4 {/\Be3(#2)} 
3. ... Ra3 4. Be3 {/\Nd2#(#1)} ( 4. Bf2 {/\Nd2#(#1)} 4. ... R3a4 5. Nd2# (
5. Ne5# ) ) ( 4. Bg1 {/\Nd2#(#1)} 4. ... R3a4 5. Nd2# ( 5. Ne5# ) ) 4. ...
 R3a4 5. Nd2# ( 5. Ne5# ) ) ( 3. Ne1 {/\Bd5+(#2)} 3. ... Ra3 4. Bd5+ Kc5 
5. Nd3# ) 3. ... Kc5 4. Bd3 {/\Nxb3#(#1)} ( 4. Bd5 {/\Nxb3#(#1)} 4. ... 
Ra3 ( 4. ... R4a5 5. Nxb3# ( 5. Ne4# ) ) 5. Ne4# ) ( 4. Bc6 {/\Ne6#(#1)} 
4. ... Ra3 5. Ne6# ) 4. ... Ra3 ( 4. ... R4a5 5. Nxb3# ( 5. Ne4# ) ) 5. 
Ne4# ) 3. Bd5 {/\Nd2(#2)} ( 3. Nd2 {/\Bd3(#2)} 3. ... R3a4 ( 3. ... R3a5 
4. Bd5 {/\Nxb3#(#1)} 4. ... Ra4 ( 4. ... Ra3 5. Ne4# ) 5. Nxb3# ( 5. Ne4# 
) ) 4. Bd3 {/\Nxb3#(#1)} ( 4. Bd5 {/\Nxb3#(#1)} 4. ... Ra3 ( 4. ... R4a5 
5. Nxb3# ( 5. Ne4# ) ) 5. Ne4# ) ( 4. Bc6 {/\Ne6#(#1)} 4. ... Ra3 5. Ne6# 
) 4. ... Ra3 ( 4. ... R4a5 5. Nxb3# ( 5. Ne4# ) ) 5. Ne4# ) ( 3. Ne1 {
/\Bd5(#2)} 3. ... R3a4 4. Bd5 {/\Nd3#(#1)} 4. ... Ra3 5. Nd3# ) 3. ... 
R3a4 4. Nd2 {/\Nxb3#(#1)} ( 4. Nd4 {/\Nxb3#(#1)} 4. ... Ra3 ( 4. ... R4a5 
5. Nxb3# ( 5. Nde6# ) ) 5. Nde6# ) ( 4. Ne1 {/\Nd3#(#1)} 4. ... Ra3 5. 
Nd3# ) ( 4. Ng5 {/\Ne4#(#1)} 4. ... Ra3 5. Ne4# ( 5. Nge6# ) ) 4. ... Ra3 
( 4. ... R4a5 5. Nxb3# ( 5. Ne4# ) ) 5. Ne4# ) 2. ... Ra3 3. Be5 {
/\Nd2(#2)} 3. ... R3a4 4. Nd2 {/\Nxb3#(#1)} ( 4. Nd4 {/\Nxb3#(#1)} 4. ... 
Ra3 ( 4. ... R4a5 5. Nxb3# ( 5. Nde6# ) ) 5. Nde6# ) ( 4. Ne1 {/\Nd3#(#1)}
4. ... Ra3 5. Nd3# ) ( 4. Ng5 {/\Ne4#(#1)} 4. ... Ra3 5. Ne4# ( 5. Nge6# )
) 4. ... Ra3 ( 4. ... R4a5 5. Nxb3# ( 5. Ne4# ) ) 5. Ne4# *

[Event "Promada"]
[Site "?"]
[Date "1929.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1929.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "5N2/n7/2k5/2N2p2/1Q3B2/8/3n4/7K w - - 0 1"]

{/\Qc5+(#3)} 
1. Ncd7 {/\Qc5+(#3)} 1. ... Nc8 ( 1. ... Nb5 2. Qc5+ Kb7 3. Qb6+ Ka8 4. 
Qb8# ) ( 1. ... Kd5 2. Qc3 {/\Nf6#(#1)} 2. ... Nc4 ( 2. ... Ke4 3. Nf6+ 
Kxf4 4. Ne6# ) 3. Qf3+ Kd4 4. Ne6# ) ( 1. ... Nb3 2. Qxb3 {/\Nb8+(#2)} 
2. ... Nc8 3. Nb8+ Kc5 4. Ne6# ) ( 1. ... Nc4 2. Qxc4+ Kb7 3. Qc7+ Ka6 ( 
3. ... Ka8 4. Qb8# ( 4. Nb6# ) ) 4. Qb6# ) ( 1. ... Ne4 2. Nb8+ Kd5 3. 
Qb3+ Kc5 4. Ne6# ) 2. Qa4+ Kb7 ( 2. ... Kd5 3. Nf6+ Kc5 4. N8d7# ) 3. Nc5+
Kb6 4. Nfd7# *

[Event "Tourney VSFK"]
[Site "?"]
[Date "1929.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1929.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "nk6/5R2/pP1p4/5p2/3P3b/6pK/1Q6/n7 w - - 0 1"]

{/\Qa3(#3)} 
1. Ra7 {/\Qa3(#3)} 1. ... Nc2 ( 1. ... a5 2. Qb5 {/\Qe8+(#2)} ( 2. Qg2 {
/\Rxa8#(#1)} 2. ... d5 3. Qxd5 {/\Rxa8#(#1)} 3. ... Nc2 ( 3. ... Nc7 4. 
Qb7# ) 4. Rxa8# ( 4. Qb7# ) ( 4. Qxa8# ) ) 2. ... Nc2 ( 2. ... Nc7 3. Qc6 
{/\Qb7#(#1)} ( 3. Qd7 {/\Qxc7#(#1)} 3. ... Nc2 ( 3. ... Na6 4. Qb7# ) ( 
3. ... Na8 4. Rb7# ( 4. Qb7# ) ) ( 3. ... Bd8 4. Qxd8# ) 4. Qxc7# ) 3. ...
 Nc2 ( 3. ... Kc8 4. Ra8# ( 4. Qxc7# ) ) ( 3. ... Na8 4. Rb7# ( 4. Rxa8# )
( 4. Qb7# ) ( 4. Qxa8# ) ) 4. Qb7# ( 4. Qxc7# ) ) ( 2. ... Nxb6 3. Qxb6+ (
3. Qa6 {/\Qb7#(#1)} 3. ... Nc2 4. Qb7# ) 3. ... Kc8 4. Qc7# ) 3. Qe8+ ( 3.
 Qc6 {/\Rb7#(#1)} 3. ... a4 ( 3. ... Nc7 4. Qb7# ( 4. Qxc7# ) ) 4. Rb7# ( 
4. Rxa8# ) ( 4. Qb7# ) ( 4. Qxa8# ) ) ( 3. Qd7 {/\Rb7#(#1)} 3. ... a4 ( 
3. ... Nc7 4. Qxc7# ) 4. Rb7# ( 4. Qb7# ) ) ( 3. Qa6 {/\Qb7#(#1)} 3. ... 
a4 4. Qb7# ( 4. Rxa8# ) ) ( 3. Qd5 {/\Rxa8#(#1)} 3. ... a4 ( 3. ... Nc7 4.
 Qb7# ) ( 3. ... Kc8 4. Qxa8# ) 4. Rxa8# ( 4. Qb7# ) ( 4. Qxa8# ) ) 3. ...
 Bd8 4. Qxd8# ) ( 1. ... Nc7 2. bxc7+ Kc8 3. Qb7+ ( 3. Qb8+ Kd7 4. c8=Q# )
3. ... Kd7 4. c8=Q# ) ( 1. ... Kc8 2. b7+ Kd7 3. bxa8=Q+ Ke6 4. d5# ) ( 
1. ... d5 2. Qa3 {/\Qd6+(#2)} 2. ... Nc2 ( 2. ... Nxb6 3. Qxa6 {/\Qb7#(#1)
} 3. ... Nc2 4. Qb7# ) ( 2. ... Be7 3. Qxe7 {/\Qf8#(#1)} ( 3. Qxa6 {
/\Qb7#(#1)} 3. ... Nc2 4. Qb7# ( 4. Rxa8# ) ) 3. ... Nc2 ( 3. ... Nc7 4. 
Qd8# ( 4. Qxc7# ) ) ( 3. ... Nxb6 4. Qc7# ( 4. Qb7# ) ) ( 3. ... Kc8 4. 
Rxa8# ( 4. Qf8# ) ( 4. Qe8# ) ) 4. Qf8# ( 4. Qd8# ) ( 4. Qb7# ) ( 4. Qe8# 
) ) 3. Qd6+ ( 3. Qf8+ Bd8 4. Qxd8# ) ( 3. Qxa6 {/\Qb7#(#1)} 3. ... Nc7 4. 
Qb7# ( 4. bxc7# ) ) 3. ... Nc7 ( 3. ... Kc8 4. b7# ) 4. Qxc7# ) ( 1. ... 
g2 2. Qxg2 {/\Rxa8#(#1)} 2. ... d5 3. Qg8+ ( 3. Qxd5 {/\Rxa8#(#1)} 3. ... 
Nc2 ( 3. ... Nc7 4. Qb7# ) 4. Rxa8# ( 4. Qb7# ) ( 4. Qxa8# ) ) 3. ... Bd8 
4. Qxd8# ) 2. Qb3 {/\Qg8+(#2)} 2. ... a5 ( 2. ... Nc7 3. bxc7+ Kxa7 ( 
3. ... Kc8 4. Qe6# ) 4. Qb8# ) ( 2. ... Nxb6 3. Qxb6+ Kc8 4. Qc7# ) ( 
2. ... Kc8 3. b7+ Kb8 ( 3. ... Kd8 4. b8=Q# ( 4. b8=R# ) ( 4. bxa8=Q# ) ( 
4. bxa8=R# ) ) 4. bxa8=Q# ( 4. bxa8=R# ) ) ( 2. ... d5 3. Qxd5 {
/\Rxa8#(#1)} 3. ... a5 ( 3. ... Nc7 4. Qb7# ) 4. Rxa8# ( 4. Qb7# ) ( 4. 
Qxa8# ) ) 3. Qg8+ ( 3. Qd5 {/\Rxa8#(#1)} 3. ... a4 ( 3. ... Nc7 4. Qb7# ) 
( 3. ... Kc8 4. Qxa8# ) 4. Rxa8# ( 4. Qb7# ) ( 4. Qxa8# ) ) 3. ... Bd8 4. 
Qxd8# *

[Event "Els Escacs a Catalunya"]
[Site "?"]
[Date "1933.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1933.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "8/1n4p1/1n6/1P4Pp/pBPk4/2p5/P2pQp2/3BbK2 w - - 0 1"]

{/\Bxc3+(#3)} 
1. Qf3 {/\Bxc3+(#3)} 1. ... a3 ( 1. ... Nd5 2. Qxd5+ Ke3 3. Bxc3 {
/\Qf3#(#1)} 3. ... a3 ( 3. ... Kf4 4. Qe5# ) 4. Qf3# ( 4. Qd4# ) ) ( 
1. ... Nd8 2. Be2 {/\Qf4#(#1)} 2. ... Nd5 ( 2. ... Nxc4 3. Qf4+ Kd5 4. 
Bxc4# ) ( 2. ... Ke5 3. Bd3 {/\Qe4#(#1)} 3. ... a3 ( 3. ... Ke6 4. Qf5# ) 
4. Qe4# ( 4. Qe3# ) ) ( 2. ... Ne6 3. Bxc3+ ( 3. Qd3+ Ke5 4. Bd6# ) 3. ...
 Kc5 4. Qc6# ) 3. Qxd5+ Ke3 4. Qe5# ) ( 1. ... Na5 2. Bc2 {/\Qe4#(#1)} 
2. ... Kxc4 3. Bd3+ Kxb4 ( 3. ... Kd4 4. Qe4# ) 4. Qf8# ) ( 1. ... Kxc4 2.
 Qe4+ Kxb5 3. Be2+ Nc4 4. Qxb7# ) 2. Bxc3+ Kxc4 3. Be2+ Kc5 4. Qc6# *

[Event "Il Problema"]
[Site "?"]
[Date "1933.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 5"]
[Result "*"]
[EventDate "1933.??.??"]
[SetUp "1"]
[PlyCount "9"]
[FEN "3R2qr/bp2p1Rp/1k1Pb3/pPNp1p2/P2P1K2/8/8/8 w - - 0 1"]

1. Rd7 Qa8 2. Rdxe7 Rb8 ( 2. ... Bc8 3. Rxb7+ Qxb7 4. Rxb7+ Bxb7 5. Nd7# )
3. Rxh7 Bc8 4. Rd7 Bxd7 5. Nxd7# *

[Event "L'Italia Scacchistica"]
[Site "?"]
[Date "1933.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1933.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "2Q5/7b/K1R1N1p1/2Rp2Pp/3p4/Pp1kpN2/Pp2p3/1n6 w - - 0 1"]

{/\Ne1+(#3)} 
1. Rc2 {/\Ne1+(#3)} 1. ... Nd2 ( 1. ... bxc2 2. Rc3+ Nxc3 ( 2. ... Ke4 3. 
Qf8 {/\Nc5#(#1)} 3. ... Nd2 4. Nc5# ( 4. Qf4# ) ) ( 2. ... dxc3 3. Qc4+ 
Kxc4 ( 3. ... dxc4 4. Nc5# ) 4. Ne5# ) 3. Nc5+ Kc4 4. Ne5# ) ( 1. ... Ke4 
2. Qf8 {/\Nc5#(#1)} 2. ... Kd3 3. Ne1+ ( 3. Ne5+ Ke4 4. Qf4# ) ( 3. Qf4 {
/\Ne1#(#1)} 3. ... Nd2 ( 3. ... bxc2 4. Qxd4# ) 4. Ne1# ( 4. Ne5# ) ( 4. 
Qxd4# ) ) 3. ... Ke4 4. Qf4# ) ( 1. ... Bg8 2. Qxg8 {/\Qxg6#(#1)} 2. ... 
Nd2 ( 2. ... Ke4 3. Qf7 {/\Nc5#(#1)} 3. ... Nd2 ( 3. ... Kd3 4. Qxg6# ) 4.
 Nc5# ) 3. Qxg6+ Ne4 4. Nf4# ( 4. Ne1# ) ( 4. Ne5# ) ) 2. Ne1+ ( 2. Ne5+ 
Ke4 3. Qf8 {/\Qf4#(#1)} 3. ... b1=Q 4. Qf4# ) 2. ... Ke4 3. Qb8 {
/\Qf4#(#1)} ( 3. Qc7 {/\Qf4#(#1)} 3. ... b1=Q 4. Qf4# ) ( 3. Qf8 {
/\Qf4#(#1)} 3. ... b1=Q 4. Qf4# ) 3. ... b1=Q 4. Qf4# *

[Event "Le Tempo"]
[Site "?"]
[Date "1933.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1933.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "1N6/2kP4/8/3b4/5K2/3P4/8/3Q4 w - - 0 1"]

{/\Qxd5(#3)} 
1. Qh5 {/\Qxd5(#3)} 1. ... Kb6 ( 1. ... Bc4 2. Qa5+ Kb7 ( 2. ... Kxb8 3. 
Qb6+ ( 3. d8=Q+ Kb7 4. Qab6# ( 4. Qaa8# ) ( 4. Qdc7# ) ( 4. Qda8# ) ) 
3. ... Ka8 4. d8=Q# ( 4. d8=R# ) ) 3. d8=Q {/\Qdc7#(#1)} 3. ... Bb3 ( 
3. ... Bxd3 4. Qdc7# ) 4. Qa6# ( 4. Qdc7# ) ) ( 1. ... Bf7 2. Qxf7 {
/\d8Q+(#2)} ( 2. Qa5+ Kb7 ( 2. ... Kxb8 3. Qb6+ ( 3. d8=Q+ Kb7 4. Qab6# ( 
4. Qaa8# ) ( 4. Qdc7# ) ( 4. Qda8# ) ) 3. ... Ka8 4. d8=Q# ( 4. d8=R# ) ) 
3. d8=Q {/\Qa6#(#1)} 3. ... Be6 ( 3. ... Bc4 4. Qdc7# ) 4. Qa6# ( 4. Qdc7#
) ) 2. ... Kb6 ( 2. ... Kd8 3. Qd5 Kc7 4. d8=Q# ) 3. d8=Q+ Kb5 4. Qc4# ) (
1. ... Ba8 2. Qa5+ Kb7 3. d8=B Kxb8 4. Qc7# ) 2. d8=Q+ Ka7 ( 2. ... Kb5 3.
 Qhxd5+ Ka4 4. Q8a5# ) ( 2. ... Kc5 3. Qa5+ ( 3. Qhxd5+ Kb4 4. Q8a5# ) 
3. ... Kd4 ( 3. ... Kd6 4. Qe5# ) 4. Qhxd5# ) 3. Qc7+ Ka8 ( 3. ... Bb7 4. 
Qha5# ) 4. Qxd5# *

[Event "Neue Leipziger Zeitung"]
[Site "?"]
[Date "1933.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1933.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "1K6/3Qp2p/4Pp2/pN1P4/2P1k1P1/r3p2r/4P1N1/8 w - - 0 1"]

{/\Qd4#(#1)} 
1. Qa7 {/\Qd4#(#1)} 1. ... Rd3 2. Qc7 {/\Qf4#(#1)} 2. ... Rf3 3. Ne1 {
/\exd3#(#1)} 3. ... a4 ( 3. ... Rc3 4. exf3# ) ( 3. ... Rd4 4. Nc3# ( 4. 
exf3# ) ) 4. exd3# ( 4. exf3# ) *

[Event "Tourney DSB"]
[Site "?"]
[Date "1933.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1933.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "1n2N3/1r1pPB1n/r4PN1/2P2k2/p2p3P/4PPK1/1R4P1/1b6 w - - 0 1"]

{/\Ng7#(#1)} 
1. Rb6 {/\Ng7#(#1)} 1. ... Raxb6 ( 1. ... Rbxb6 2. c6 {/\Nd6+(#2)} 2. ... 
a3 ( 2. ... Rxc6 3. Kh2 {/\g4#(#1)} 3. ... a3 ( 3. ... Ba2 4. e4# ( 4. g4#
) ) ( 3. ... Rxf6 4. Ng7# ( 4. g4# ) ) 4. g4# ) 3. Nd6+ Kxf6 4. e8=N# ) 2.
 Kh2 {/\g4#(#1)} 2. ... Rb2 3. Nd6+ Kxf6 4. e8=N# *

[Event "Memorial Pauli"]
[Site "?"]
[Date "1934.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1934.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "8/3p3R/5P1b/r1PQpKp1/1RB1Pp2/8/1P1N4/k1r5 w - - 0 1"]

{/\Rb3(#3)} 
1. Qd3 {/\Rb3(#3)} 1. ... Ra2 ( 1. ... Re1 2. Rb3 {/\Ra3+(#2)} 2. ... Ka2 
3. Ra3+ ( 3. Qc3 {/\Ra3#(#1)} 3. ... Ka1 ( 3. ... Ra4 4. Ra3# ) 4. Qxa5# )
3. ... Kxb2 4. Qc3# ) ( 1. ... d5 2. Ra7 {/\Rxa5#(#1)} 2. ... Rxa7 3. Ba6 
{/\Qa3#(#1)} 3. ... Ka2 ( 3. ... Rxa6 4. Qxa6# ) ( 3. ... Rb1 4. Qxb1# ( 
4. Qa3# ) ) 4. Qa3# ) ( 1. ... Bg7 2. Rh1 {/\Rxc1#(#1)} ( 2. Rb3 {
/\Ra3+(#2)} 2. ... Ka2 ( 2. ... Rc2 3. Qxc2 {/\Qb1#(#1)} 3. ... Ka2 ( 
3. ... Ra4 4. Qb1# ) 4. Ra3# ( 4. Qb1# ) ) 3. Ra3+ Kxb2 4. Qb3# ) 2. ... 
Rxh1 3. Nf1 {/\Qd1#(#1)} 3. ... Ra4 ( 3. ... Rxf1 4. Qxf1# ) 4. Qd1# ) 2. 
Nb3+ Kxb2 3. Nxc1+ Ka1 4. Rb1# ( 4. Qb1# ) *

[Event "Dagens Nyheder"]
[Site "?"]
[Date "1935.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1935.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "3k4/1p1B1p1r/3Q4/P4p1n/P2P4/1r6/1p6/1K6 w - - 0 1"]

1. d5 {/\Bb5+(#3)} 1. ... Ra3 ( 1. ... Rb4 2. Bb5+ Kc8 3. Qf8+ Kc7 4. d6# 
) ( 1. ... Nf6 2. Bxf5+ Ke8 3. Qb8+ Ke7 4. d6# ) ( 1. ... Ng7 2. Be6+ Ke8 
3. Qd7+ Kf8 4. Qxf7# ) 2. Bc6+ ( 2. Bb5+ Kc8 3. Qf8+ Kc7 4. d6# ) 2. ... 
Kc8 3. Qd7+ Kb8 4. Qxb7# *

[Event "Memorial Berger"]
[Site "?"]
[Date "1935.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1935.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "6r1/p2RBR2/2n1p1np/2N1k3/8/rP2p1p1/P2PbPPP/7K w - - 0 1"]

{/\Bf6+(#3)} 
1. h3 {/\Bf6+(#3)} 1. ... Rxa2 ( 1. ... Nd4 2. f4+ Nxf4 3. dxe3 {
/\exd4#(#1)} 3. ... Rxa2 ( 3. ... Ra4 4. exf4# ) ( 3. ... Nf5 4. Bf6# ) ( 
3. ... Nd5 4. Bd6# ) 4. exd4# ( 4. exf4# ) ) ( 1. ... Bd1 2. Nd3+ ( 2. 
Bf6+ Kf4 3. Bd8+ Ke5 4. Bc7# ) 2. ... Ke4 3. f3+ Bxf3 4. gxf3# ) ( 1. ... 
Nf4 2. d4+ Nxd4 3. fxe3 {/\exd4#(#1)} 3. ... Rxa2 ( 3. ... Ra4 4. exf4# ) 
( 3. ... Nf5 4. Bf6# ) ( 3. ... Nd5 4. Bd6# ) 4. exd4# ( 4. exf4# ) ) ( 
1. ... Re8 2. Bd6+ ( 2. Bf6+ Kf4 3. Bd8+ Ke5 4. Bc7# ) 2. ... Kd4 3. Bf8+ 
Ke5 4. Bg7# ) 2. Bf6+ Kf4 3. Bd8+ Ke5 4. Bc7# *

[Event "Memorial Berger"]
[Site "?"]
[Date "1935.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1935.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "r2n4/3P2n1/1p2P2p/8/1p2k2p/P1P2R2/5Q1B/1K6 w - - 0 1"]

{/\Rf2+(#3)} 
1. Qg2 {/\Rf2+(#3)} 1. ... Ra7 ( 1. ... Ra5 2. Rg3+ Ke5 ( 2. ... Kf4 3. 
Qf3+ Ke5 4. Rg6# ) 3. Rg6+ Kf5 4. Qc2# ( 4. Qg4# ) ) ( 1. ... Rc8 2. 
dxc8=Q {/\Qc4#(#1)} ( 2. Rf2+ Kd3 3. Qd5+ Kxc3 ( 3. ... Ke3 4. Qf3# ( 4. 
Qd4# ) ) 4. Rc2# ( 4. Rf3# ) ( 4. Be5# ) ) 2. ... b5 3. Qa8+ ( 3. Qe2+ Kd5
4. Qd3# ( 4. Qe5# ) ( 4. Rd3# ) ) ( 3. Qg4+ Kd5 4. Rd3# ( 4. Qd4# ) ) ( 3.
 Qd7 {/\Qd4#(#1)} 3. ... b3 ( 3. ... bxc3 4. Qd3# ( 4. Qe2# ) ( 4. Qg4# ) 
) ( 3. ... Nb7 4. Qc6# ( 4. Qxb7# ) ( 4. Qd4# ) ( 4. Qd3# ) ( 4. Qe2# ) ( 
4. Qg4# ) ) 4. Qd4# ( 4. Qd3# ) ( 4. Qe2# ) ( 4. Qg4# ) ) ( 3. Qc7 {
/\Qe5#(#1)} 3. ... b3 ( 3. ... Nf7 4. Qb7# ( 4. Qc6# ) ) ( 3. ... Nc6 4. 
Qxc6# ) ( 3. ... Kd5 4. Re3# ( 4. Rf6# ) ) 4. Qe5# ) ( 3. Qc5 {/\Qd4#(#1)}
3. ... b3 ( 3. ... bxc3 4. Qe5# ( 4. Re3# ) ( 4. Qe2# ) ( 4. Qg4# ) ( 4. 
Rxc3# ) ( 4. Rh3# ) ) ( 3. ... Nc6 4. Qxc6# ( 4. Re3# ) ( 4. Qe2# ) ( 4. 
Qg4# ) ( 4. Rh3# ) ) 4. Qd4# ( 4. Qe5# ) ( 4. Re3# ) ( 4. Qe2# ) ( 4. Qg4#
) ( 4. Rh3# ) ) ( 3. Qxd8 {/\Qa8#(#1)} 3. ... b3 ( 3. ... bxc3 4. Qd3# ( 
4. Qe2# ) ( 4. Qg4# ) ) 4. Qa8# ( 4. Qd4# ) ( 4. Qd3# ) ( 4. Qe2# ) ( 4. 
Qg4# ) ) ( 3. Rf2+ Kd3 4. Qf3# ) ( 3. Qf1 {/\Qd3#(#1)} 3. ... b3 ( 3. ... 
Nb7 4. Qxb7# ( 4. Qc6# ) ( 4. Qd3# ) ) ( 3. ... Nc6 4. Qxc6# ( 4. Qd3# ) )
4. Qd3# ) 3. ... Nb7 ( 3. ... Nc6 4. Qxc6# ) 4. Qxb7# ) ( 1. ... bxa3 2. 
Rf4+ Kd3 ( 2. ... Ke3 3. Re4+ ( 3. Kc1 {/\Qf3#(#1)} 3. ... a2 4. Qf3# ( 4.
 Qe4# ) ( 4. Qd2# ) ) ( 3. Kc2 {/\Re4#(#1)} 3. ... a2 ( 3. ... Ra4 4. Qf3#
( 4. Qf2# ) ( 4. Qd2# ) ) 4. Re4# ( 4. Qf3# ) ( 4. Qe4# ) ( 4. Qf2# ) ( 4.
 Qd2# ) ) 3. ... Kd3 4. Qc2# ) ( 2. ... Ke5 3. Rf7+ Kxe6 4. Qa2# ) 3. Kc1 
{/\Qf3#(#1)} 3. ... a2 ( 3. ... Kxc3 4. Qh3# ( 4. Qf3# ) ( 4. Qc2# ) ) ( 
3. ... Nf5 4. Qd2# ) 4. Qf3# ( 4. Qd2# ) ) ( 1. ... bxc3 2. Qe2+ Kd4 ( 
2. ... Kd5 3. Rxc3 {/\Qc4#(#1)} 3. ... Ra7 ( 3. ... Ra4 4. Qe5# ) ( 3. ...
 Kd4 4. Qd3# ( 4. Qc4# ) ( 4. Qe5# ) ) 4. Qc4# ( 4. Qe5# ) ) 3. Qe5+ Kc4 
4. Rxc3# ) ( 1. ... Kd5 2. Rf5+ Kc4 3. Qd5+ Kxc3 4. Rf3# ( 4. Be5# ) ) ( 
1. ... h3 2. Rxh3+ Kf5 3. Rxh6 {/\Qg6#(#1)} 3. ... Ra7 4. Qg6# ) 2. Rf2+ (
2. Rg3+ Ke5 ( 2. ... Kf4 3. Qf3+ Ke5 4. Rg6# ) 3. Rg6+ Kf5 4. Qc2# ( 4. 
Qg4# ) ) 2. ... Kd3 3. Qd5+ Kxc3 ( 3. ... Ke3 4. Qf3# ( 4. Qd4# ) ) 4. 
Rc2# ( 4. Rf3# ) ( 4. Be5# ) *

[Event "Memorial Berger"]
[Site "?"]
[Date "1935.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1935.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "B5R1/2pR4/2P5/K1k2ppr/p2p4/3r3p/1N4Nn/3b4 w - - 0 1"]

1. Rf8 {/\Rxf5#(#1)} 1. ... Bg4 ( 1. ... Rf3 2. Rfd8 {/\Rd5#(#1)} 2. ... 
Bb3 3. Rb8 {/\Rb5#(#1)} 3. ... a3 ( 3. ... Bc4 4. Nxa4# ) 4. Rb5# ) 2. Re8
{/\Re5#(#1)} 2. ... Re3 ( 2. ... Bf3 3. Re5+ Bd5 4. Rdxd5# ( 4. Rexd5# ) )
( 2. ... Nf3 3. Red8 {/\Rd5#(#1)} 3. ... a3 4. Rd5# ) 3. Nxe3 {/\Nd3#(#1)}
3. ... a3 ( 3. ... dxe3 4. Re5# ) ( 3. ... Be2 4. Nxa4# ( 4. Rd5# ) ( 4. 
Re5# ) ) 4. Nd3# ( 4. Na4# ) ( 4. Rd5# ) ( 4. Re5# ) *

[Event "Skakbladet"]
[Site "?"]
[Date "1935.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1935.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "5n1b/n5rb/3Npr1p/P1PPNp2/3k1B2/2R2Pp1/PP6/K7 w - - 0 1"]

1. a3 {/\Rd3+(#3)} 1. ... Nc6 ( 1. ... Rfg6 2. Ne4 {/\Rd3#(#1)} 2. ... 
fxe4 3. Rc4+ Kxd5 4. fxe4# ) 2. Rd3+ ( 2. Nxc6+ Kxd5 3. Nb4+ Kd4 4. Rc4# (
4. Nb5# ) ) ( 2. dxc6 {/\Rd3+(#2)} 2. ... Kd5 3. Rd3+ ( 3. b4 {/\Rd3#(#1)}
3. ... Kd4 4. Rd3# ) 3. ... Kxc5 4. b4# ( 4. Be3# ) ) 2. ... Kxc5 3. dxc6 
{/\b4#(#1)} 3. ... Rfg6 ( 3. ... Rb7 4. Be3# ) 4. b4# ( 4. Be3# ) *

[Event "64"]
[Site "?"]
[Date "1936.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1936.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "7n/1ppR4/1r2pR2/1P2k2K/P3P2B/1pPP1p2/q7/8 w - - 0 1"]

{/\Rexe6+(#3)} 
1. Re7 {/\Rexe6+(#3)} 1. ... Qb1 ( 1. ... b2 2. Rf8 {/\Bg3#(#1)} 2. ... 
Kd6 ( 2. ... Nf7 3. Bg3+ Kf6 4. Rexf7# ( 4. Rfxf7# ) ) 3. Rd7+ Kc5 ( 
3. ... Kxd7 4. Rd8# ) ( 3. ... Ke5 4. Bg3# ) 4. Bf2# ) ( 1. ... c5 2. Rf5+
Kd6 3. Rd5+ exd5 4. e5# ) ( 1. ... Kd6 2. Rfxe6+ Kc5 3. Re5+ Kd6 4. Rd5# )
2. Rexe6+ Rxe6 3. Rf5+ Kd6 4. Rd5# *

[Event "64"]
[Site "?"]
[Date "1936.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1936.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "n7/K1PB4/b1P1P3/1p2k2p/3R2P1/1p3p1P/pQP1Pp2/5rbn w - - 0 1"]

{/\Qe3+(#3)} 
1. Qc3 {/\Qe3+(#3)} 1. ... a1=Q ( 1. ... Nxc7 2. Ra4+ Kd6 3. Qb4+ Kd5 4. 
Qd4# ) ( 1. ... Kf6 2. Rd5+ Kg6 3. Qh8 {/\Be8#(#1)} 3. ... a1=Q ( 3. ... 
Nxc7 4. gxh5# ) 4. Be8# ( 4. gxh5# ) ) ( 1. ... Ng3 2. Rd1+ Kf4 3. Qd2+ 
Ke4 4. Qd4# ) ( 1. ... hxg4 2. Qc5+ Kf6 3. Rxg4 {/\Qg5#(#1)} 3. ... a1=Q 
4. Qg5# ) 2. Qe3+ Kf6 3. Qh6+ Ke5 ( 3. ... Ke7 4. Qg7# ) 4. Qf4# ( 4. Qg7#
) ( 4. Qh8# ) *

[Event "Shakhmaty v SSSR"]
[Site "?"]
[Date "1936.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1936.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "8/8/8/8/4b1Q1/3P4/5B2/K4k1N w - - 0 1"]

{/\Nf2(#3)} 
1. Bh4 {/\Nf2(#3)} 1. ... Bxd3 ( 1. ... Bxh1 2. Qd1+ Kg2 3. Qe1 Kf3 ( 
3. ... Kh2 4. Qg3# ) 4. Qe4# ) ( 1. ... Bd5 2. Nf2 {/\Qd1+(#2)} 2. ... Bc4
( 2. ... Bb3 3. Ne4 {/\Nd2#(#1)} 3. ... Ba2 4. Nd2# ) ( 2. ... Bf3 3. Qxf3
{/\Nh3#(#1)} 3. ... Ke1 ( 3. ... Kg1 4. Qh1# ) 4. Qd1# ( 4. Ne4# ) ) 3. 
Qd1+ ( 3. dxc4 Ke1 4. Qd1# ) ( 3. Nd1 {/\Ne3#(#1)} 3. ... Bb3 4. Ne3# ) ( 
3. Ne4 {/\Nd2#(#1)} 3. ... Bb3 4. Nd2# ) 3. ... Kg2 4. Qh1# ) 2. Qf3+ Kg1 
3. Qh3 {/\Bf2#(#1)} 3. ... Bc2 4. Bf2# *

[Event "Shakhmaty v SSSR"]
[Site "?"]
[Date "1937.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1937.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "2bB2QK/3pp3/nPpk1p2/2b2R1p/r2p3r/1NPpP3/6P1/1q6 w - - 0 1"]

1. c4 {/\Rd5+(#2)} 1. ... Rxc4 ( 1. ... Bb7 2. Qf7 {/\Bxe7#(#1)} 2. ... 
Re4 3. Nxc5 {/\Nxe4#(#1)} 3. ... Ra3 ( 3. ... Nxc5 4. Bc7# ) ( 3. ... d2 
4. Nxb7# ) 4. Nxe4# ( 4. Nxb7# ) ) 2. e4 {/\Rd5+(#2)} 2. ... Qc2 ( 2. ... 
Bb7 3. Na5 {/\Nxc4#(#1)} 3. ... Nc7 ( 3. ... Qc2 4. Nxb7# ) 4. Nxc4# ( 4. 
Nxb7# ) ( 4. Bxc7# ) ) ( 2. ... Rxe4 3. Nd2 {/\Nxc4#(#1)} 3. ... Nc7 ( 
3. ... Qc2 4. Nxe4# ) 4. Nxc4# ( 4. Nxe4# ) ( 4. Bxc7# ) ) 3. Rd5+ cxd5 4.
 Qxd5# *

[Event "Shakhmaty v SSSR"]
[Site "?"]
[Date "1938.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1938.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "nK2nkN1/6pQ/1p2p3/4N3/8/8/3p4/8 w - - 0 1"]

{/\Nh6+(#3)} 
1. Qh8 {/\Nh6+(#3)} 1. ... Nac7 ( 1. ... d1=N 2. Kc8 {/\Kd8(#2)} ( 2. Nh6+
Ke7 3. Qf8+ Kd8 ( 3. ... Kxf8 4. Ng6# ) 4. Nhf7# ) 2. ... Nac7 ( 2. ... 
Nd6+ 3. Kd7 {/\Ne7#(#1)} 3. ... Nc7 ( 3. ... Nf7 4. Ng6# ) 4. Ne7# ( 4. 
Nf6# ) ( 4. Nh6# ) ) ( 2. ... Nf6 3. Nxf6+ Ke7 4. Qd8# ) 3. Kd8 {
/\Ne7#(#1)} ( 3. Kd7 {/\Ne7#(#1)} 3. ... b5 ( 3. ... Nf6+ 4. Nxf6# ) 4. 
Ne7# ( 4. Nf6# ) ( 4. Nh6# ) ) 3. ... b5 ( 3. ... Nf6 4. Nxf6# ) 4. Ne7# (
4. Nf6# ) ( 4. Nh6# ) ) ( 1. ... Nec7 2. Nf6+ Ke7 3. Qd8+ Kxd8 4. Nc6# ) (
1. ... g5 2. Qh5 {/\Qf7#(#1)} 2. ... Nd6 ( 2. ... Kxg8 3. Qf7+ Kh8 4. Ng6#
) 3. Qg6 {/\Nd7#(#1)} 3. ... Nc7 ( 3. ... Nf7 4. Qxf7# ) 4. Nd7# ) ( 
1. ... g6 2. Nc6 {/\Nh6#(#1)} 2. ... Nf6 3. Nh6+ Ng8 4. Qxg8# ) 2. Nh6+ 
Ke7 3. Qf8+ Kd8 ( 3. ... Kxf8 4. Ng6# ) 4. Nhf7# *

[Event "Shakhmaty v SSSR"]
[Site "?"]
[Date "1938.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1938.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "8/8/2QN4/8/3k4/1Pp1pP2/4pp2/Kn6 w - - 0 1"]

1. Qd7 {/\Nc4+(#3)} 1. ... Nd2 ( 1. ... c2 2. Ne4+ Ke5 3. Qd6+ ( 3. Qe7+ 
Kd4 ( 3. ... Kf4 4. Qf6# ) 4. Qd6# ) 3. ... Kf5 4. Qf6# ) ( 1. ... Kc5 2. 
Nc8 {/\Qd6+(#2)} 2. ... Nd2 ( 2. ... Kb4 3. Qa4+ Kc5 4. Qc4# ) 3. Qd6+ Kb5
4. Qb6# ) ( 1. ... Kd3 2. Qf5+ Kd2 3. Nc4+ Kc1 4. Qxb1# ) ( 1. ... Ke5 2. 
Ne8 {/\Qd6+(#2)} 2. ... Nd2 ( 2. ... Kf4 3. Qg4+ Ke5 4. Qe4# ) 3. Qd6+ Kf5
4. Qf6# ) 2. Nc4+ ( 2. Ne4+ Ke5 3. Qd6+ ( 3. Qe7+ Kd4 ( 3. ... Kf4 4. Qf6#
) 4. Qd6# ) 3. ... Kf5 4. Qf6# ) 2. ... Kc5 3. Qc7+ ( 3. Qd6+ Kb5 4. Qb6# 
) 3. ... Kb4 ( 3. ... Kd4 4. Qd6# ) 4. Qb6# *

[Event "Shakhmaty v SSSR"]
[Site "?"]
[Date "1939.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1939.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "3Bk2r/5p2/2K2p2/4p3/6Q1/8/4pr1b/8 w k - 0 1"]

1. Qg7 {/\Qxh8#(#1)} 1. ... Rf8 2. Qg4 {/\Qd7#(#1)} 2. ... Rf5 ( 2. ... 
Rh8 3. Qc8 {/\Bxf6#(#1)} 3. ... e1=Q ( 3. ... Rf8 4. Qd7# ( 4. Bxf6# ) ) 
4. Bxf6# ) 3. Qb4 {/\Qe7#(#1)} 3. ... e1=Q ( 3. ... Kxd8 4. Qxf8# ) 4. 
Qe7# *

[Event "Shakhmaty v SSSR"]
[Site "?"]
[Date "1939.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 7"]
[Result "*"]
[EventDate "1939.??.??"]
[SetUp "1"]
[PlyCount "13"]
[FEN "7b/Kp4q1/1p2bp1n/p1B2pp1/7p/5r1k/6RP/7Q w - - 0 1"]

1. Rg1 Rg3 ( 1. ... Rf2 2. Bxf2 Bd5 3. Qxd5 Kxh2 4. Qg2# ) 2. hxg3+ Kg4 3.
 gxh4+ Kh5 ( 3. ... Kf4 4. Bd6+ Ke3 5. Rg3+ Kd4 6. Qd1+ Kc4 7. Qd3# ) 4. 
hxg5+ Kg6 5. gxh6+ Kh7 ( 5. ... Kf7 6. Qh5+ Kg8 7. h7# ) 6. hxg7+ Kg8 7. 
gxh8=N# *

[Event "Shakhmaty v SSSR"]
[Site "?"]
[Date "1950.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 7"]
[Result "*"]
[EventDate "1950.??.??"]
[SetUp "1"]
[PlyCount "13"]
[FEN "2R5/5N1B/1p1pN3/1P2p1p1/p3P2r/Kp1kP1r1/2p5/n1B1R1bb w - - 0 1"]

1. Kb4 Rxe4+ 2. Rc4 Rxe3 ( 2. ... Rg4 3. Nd4 ) 3. Rd4+ exd4 4. Nf4+ gxf4 
5. Ne5+ dxe5 6. Bg8 Rxe1 7. Bc4# *

[Event "Shakhmaty v SSSR"]
[Site "?"]
[Date "1952.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1952.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "8/2KN4/6p1/1p6/4Q3/6P1/3kN3/8 w - - 0 1"]

1. Nd4 b4 ( 1. ... Kc3 2. Qe3+ Kb2 ( 2. ... Kb4 3. Nc2+ ( 3. Nc6+ Ka4 4. 
Nb6# ( 4. Nc5# ) ) ( 3. Qb3+ Ka5 4. Qa3# ( 4. Qxb5# ) ) ( 3. Nb6 {
/\Nc6#(#1)} 3. ... Ka5 ( 3. ... Kc5 4. Qc3# ( 4. Nc2# ) ( 4. Nc6# ) ) ( 
3. ... g5 4. Nc6# ) 4. Qa3# ) 3. ... Ka4 ( 3. ... Ka5 4. Qa7# ( 4. Qa3# ) 
) ( 3. ... Kc4 4. Nb6# ) 4. Qa3# ) ( 2. ... Kc4 3. Nb6+ Kb4 ( 3. ... Kc5 
4. Qc3# ( 4. Nc2# ) ( 4. Nc6# ) ) 4. Nc6# ) 3. Qb3+ Ka1 ( 3. ... Kc1 4. 
Qc2# ) 4. Nc2# ) ( 1. ... g5 2. Qc2+ Ke3 3. Nf5+ Kf3 4. Ne5# ) 2. Qe2+ Kc3
3. Nb5+ Kb3 4. Nc5# *

[Event "Shakhmaty v SSSR"]
[Site "?"]
[Date "1953.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 5"]
[Result "*"]
[EventDate "1953.??.??"]
[SetUp "1"]
[PlyCount "9"]
[FEN "8/8/8/8/8/4bK1p/3B3k/5R2 w - - 0 1"]

{/\Bg3#(#1)} 
1. Be1 {/\Bg3#(#1)} 1. ... Bf2 ( 1. ... Bg1 2. Bg3+ Kh1 3. Rd1 h2 4. Be1 
Bf2 5. Bxf2# ) ( 1. ... Bf4 2. Bf2 {/\Bg1+(#3)} 2. ... Be5 3. Bg1+ Kh1 4. 
Bd4+ Kh2 5. Bxe5# ) 2. Rxf2+ Kg1 3. Re2 {/\Bg3(#2)} ( 3. Rd2 {/\Rd1(#2)} 
3. ... Kf1 ( 3. ... h2 4. Bf2+ Kf1 5. Rd1# ) 4. Rd1 {/\Bf2#(#1)} ( 4. Bf2 
{/\Rd1#(#1)} 4. ... h2 5. Rd1# ) ( 4. Bg3 {/\Rd1#(#1)} 4. ... Kg1 5. Rd1# 
) 4. ... Kg1 ( 4. ... h2 5. Bf2# ( 5. Bg3# ) ( 5. Bh4# ) ( 5. Bd2# ) ( 5. 
Bc3# ) ( 5. Bb4# ) ( 5. Ba5# ) ) 5. Bg3# ) ( 3. Rc2 {/\Rc1(#2)} 3. ... Kf1
( 3. ... h2 4. Bf2+ Kf1 5. Rc1# ) 4. Rc1 {/\Bf2#(#1)} ( 4. Bf2 {/\Rc1#(#1)
} 4. ... h2 5. Rc1# ) ( 4. Bg3 {/\Rc1#(#1)} 4. ... Kg1 5. Rc1# ) 4. ... 
Kg1 ( 4. ... h2 5. Bf2# ( 5. Bg3# ) ( 5. Bh4# ) ( 5. Bd2# ) ( 5. Bc3# ) ( 
5. Bb4# ) ( 5. Ba5# ) ) 5. Bg3# ) ( 3. Rb2 {/\Rb1(#2)} 3. ... Kf1 ( 3. ...
 h2 4. Bf2+ Kf1 5. Rb1# ) 4. Rb1 {/\Bf2#(#1)} ( 4. Bf2 {/\Rb1#(#1)} 4. ...
 h2 5. Rb1# ) ( 4. Bg3 {/\Rb1#(#1)} 4. ... Kg1 5. Rb1# ) 4. ... Kg1 ( 
4. ... h2 5. Bf2# ( 5. Bg3# ) ( 5. Bh4# ) ( 5. Bd2# ) ( 5. Bc3# ) ( 5. 
Bb4# ) ( 5. Ba5# ) ) 5. Bg3# ) ( 3. Ra2 {/\Ra1(#2)} 3. ... Kf1 ( 3. ... h2
4. Bf2+ Kf1 5. Ra1# ) 4. Ra1 {/\Bf2#(#1)} ( 4. Bf2 {/\Ra1#(#1)} 4. ... h2 
5. Ra1# ) ( 4. Bg3 {/\Ra1#(#1)} 4. ... Kg1 5. Ra1# ) 4. ... Kg1 ( 4. ... 
h2 5. Bf2# ( 5. Bg3# ) ( 5. Bh4# ) ( 5. Bd2# ) ( 5. Bc3# ) ( 5. Bb4# ) ( 
5. Ba5# ) ) 5. Bg3# ) 3. ... Kf1 ( 3. ... h2 4. Bf2+ Kf1 5. Re1# ) 4. Bg3 
{/\Re1#(#1)} ( 4. Bf2 {/\Re1#(#1)} 4. ... h2 5. Re1# ) 4. ... Kg1 5. Re1# 
*

[Event "Vecherny Leningrad"]
[Site "?"]
[Date "1981.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1981.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "7b/8/5pPk/5P1P/1B2N3/5KP1/8/8 w - - 0 1"]

1. Nd6 Kg5 ( 1. ... Kg7 2. Nf7 Kg8 3. h6 Bg7 4. h7# ) 2. Bd2+ Kxh5 3. Ne8 
Bg7 4. Nxg7# *

[Event "Vladimirov & Phokin 'Leonid Kubbel'"]
[Site "?"]
[Date "1984.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1984.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "8/1p1p4/bP1BP1N1/1p2P1p1/1P6/kPR5/6P1/1K6 w - - 0 1"]

1. Rg3 dxe6 ( 1. ... g4 2. Nf4 dxe6 3. Nd3 Kxb3 4. Nb2# ) 2. Bf8 g4 3. Ne7
Kxb4 4. Nc6# *

[Event "Vladimirov & Phokin 'Leonid Kubbel'"]
[Site "?"]
[Date "1984.??.??"]
[Round "?"]
[White "KubbelL/KubbelA"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1984.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "5R2/2p5/2P4P/3P4/4kN1R/P2p2K1/3P4/8 w - - 0 1"]

1. Rd8 {/\Ng6+(#3)} 1. ... Kd4 ( 1. ... Ke5 2. Ng6+ Kf5 3. Rg4 {/\Rf8#(#1)
} 3. ... Kf6 4. Rf8# ) ( 1. ... Kf5 2. Rg4 {/\Ng6(#2)} 2. ... Ke4 3. Ng6+ 
Kf5 4. Rf8# ) 2. Ne2+ Kc5 ( 2. ... Ke5 3. Rf4 dxe2 4. d4# ) 3. Rb4 dxe2 4.
 d4# *

[Event "Deutsches Wochenschach"]
[Site "?"]
[Date "1907.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1907.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "6B1/B7/6kP/2R5/8/5K2/8/8 w - - 0 1"]

1. Rd5 {/\Kg4(#3)} 1. ... Kf6 ( 1. ... Kxh6 2. Bd4 {/\Kg4(#2)} 2. ... Kg6 
3. Kg4 {/\Rd6#(#1)} 3. ... Kh6 4. Rd6# ) 2. Be3 Ke7 3. Bg5+ Ke8 4. Rd8# {
Source: Tishkov & Chepizny "Shakhmatny zadachi-miniatyury" 1987} *

[Event "Sovremennoe slovo"]
[Site "?"]
[Date "1908.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1908.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "1bk1K3/P1p5/2B5/8/8/3N4/8/8 w - - 0 1"]

1. a8=B {/\Bab7#(#1)} 1. ... Ba7 2. Bcb7+ ( 2. Nb4 {/\Bab7+(#2)} 2. ... 
Bb6 ( 2. ... Kb8 3. Na6+ ( 3. Bcb7 {/\Na6#(#1)} 3. ... Bb6 ( 3. ... c5 4. 
Na6# ) 4. Nc6# ) 3. ... Kc8 4. Bab7# ( 4. Bd7# ) ( 4. Bcb7# ) ) 3. Bcb7+ (
3. Na6 {/\Bab7#(#1)} 3. ... Ba5 4. Bab7# ( 4. Bd7# ) ( 4. Bcb7# ) ) 3. ...
 Kb8 4. Nc6# ) ( 2. Ne5 {/\Bab7+(#2)} 2. ... Bb6 ( 2. ... Kb8 3. Nd7+ Kc8 
4. Bab7# ( 4. Bcb7# ) ) 3. Bcb7+ ( 3. Nd7 {/\Bab7#(#1)} 3. ... Ba5 4. 
Bab7# ( 4. Bcb7# ) ) 3. ... Kb8 4. Nc6# ) 2. ... Kb8 3. Nb4 {/\Na6#(#1)} 
3. ... Bb6 ( 3. ... c5 4. Na6# ) 4. Nc6# {Source: Tishkov & Chepizny 
"Shakhmatny zadachi-miniatyury" 1987} *

[Event "Sovremennoe slovo"]
[Site "?"]
[Date "1910.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1910.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "8/4k1B1/K1P3B1/2P5/1P6/8/8/8 w - - 0 1"]

1. c7 {/\Kb7(#3)} 1. ... Kd7 ( 1. ... Ke6 2. c8=Q+ Kd5 3. Ka5 Kc4 4. Qe6# 
( 4. Qg8# ) ) 2. Kb7 {/\c8Q+(#2)} 2. ... Ke6 3. c8=Q+ Kd5 ( 3. ... Ke7 4. 
Qe8# ) 4. Qg8# {Source: Tishkov & Chepizny "Shakhmatny zadachi-miniatyury"
1987} *

[Event "Journal de Geneve"]
[Site "?"]
[Date "1933.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1933.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "1N6/2kP4/8/3b4/5K2/3P4/8/3Q4 w - - 0 1"]

1. Qh5 {/\Qxd5(#3)} 1. ... Kb6 ( 1. ... Bc4 2. Qa5+ Kb7 ( 2. ... Kxb8 3. 
Qb6+ ( 3. d8=Q+ Kb7 4. Qab6# ( 4. Qaa8# ) ( 4. Qdc7# ) ( 4. Qda8# ) ) 
3. ... Ka8 4. d8=Q# ( 4. d8=R# ) ) 3. d8=Q {/\Qdc7#(#1)} 3. ... Bb3 ( 
3. ... Bxd3 4. Qdc7# ) 4. Qa6# ( 4. Qdc7# ) ) ( 1. ... Bf7 2. Qxf7 {
/\d8Q+(#2)} ( 2. Qa5+ Kb7 ( 2. ... Kxb8 3. Qb6+ ( 3. d8=Q+ Kb7 4. Qab6# ( 
4. Qaa8# ) ( 4. Qdc7# ) ( 4. Qda8# ) ) 3. ... Ka8 4. d8=Q# ( 4. d8=R# ) ) 
3. d8=Q {/\Qa6#(#1)} 3. ... Be6 ( 3. ... Bc4 4. Qdc7# ) 4. Qa6# ( 4. Qdc7#
) ) 2. ... Kb6 ( 2. ... Kd8 3. Qd5 Kc7 4. d8=Q# ) 3. d8=Q+ Kb5 4. Qc4# ) 
2. d8=Q+ Ka7 ( 2. ... Kb5 3. Qhxd5+ Ka4 4. Q8a5# ) ( 2. ... Kc5 3. Qa5+ ( 
3. Qhxd5+ Kb4 4. Q8a5# ) 3. ... Kd4 ( 3. ... Kd6 4. Qe5# ) 4. Qhxd5# ) 3. 
Qc7+ Ka8 ( 3. ... Bb7 4. Qha5# ) 4. Qxd5# {Source: Tishkov & Chepizny 
"Shakhmatny zadachi-miniatyury" 1987} *

[Event "Neue Leipziger Zaitung"]
[Site "?"]
[Date "1936.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1936.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "8/5Q2/4p3/8/P7/8/1Pk4B/K7 w - - 0 1"]

1. Bf4 Kb3 ( 1. ... e5 2. Qc4+ Kd1 3. Qd3+ Ke1 4. Bg3# ) 2. Qxe6+ Kxa4 ( 
2. ... Kb4 3. b3 Ka3 ( 3. ... Ka5 4. Bd2# ) ( 3. ... Kc3 4. Qc4# ) ( 
3. ... Kc5 4. Qd6# ) 4. Bd6# ) ( 2. ... Kc2 3. Qe3 Kd1 4. Qd2# ) 3. Qc4+ 
Ka5 4. Bc7# {Source: Tishkov & Chepizny "Shakhmatny zadachi-miniatyury" 
1987} *

[Event "Izbranny zadachi L.I.Kubbel"]
[Site "?"]
[Date "1958.??.??"]
[Round "?"]
[White "Kubbel, Leonid"]
[Black "Mate in 4"]
[Result "*"]
[EventDate "1958.??.??"]
[SetUp "1"]
[PlyCount "7"]
[FEN "2q5/8/5p2/8/8/8/p1p5/k1K4Q w - - 0 1"]

{/\Qxf6+(#2)} 
1. Qf3 {/\Qxf6+(#2)} 1. ... f5 2. Qh3 Qb7 ( 2. ... Qc7 3. Qh8+ Qe5 ( 
3. ... Qc3 4. Qxc3# ) ( 3. ... Qg7 4. Qxg7# ) 4. Qxe5# ) ( 2. ... f4 3. 
Qxc8 {/\Qc3#(#1)} 3. ... f3 4. Qc3# ( 4. Qh8# ) ) 3. Qc3+ ( 3. Qh8+ Qb2+ (
3. ... Qg7 4. Qxg7# ) 4. Qxb2# ) 3. ... Qb2+ 4. Qxb2# {Source: Tishkov & 
Chepizny "Shakhmatny zadachi-miniatyury" 1987} *

