mate test positions
Posted: Sun Jul 29, 2018 1:18 pm
Positions are taken from human-human games from the games of the bottom of the first WCCC correspondence championship
see https://www.iccf.com/event?id=38834
I simply took the position when one side resigned and went backward until I got 2 positions in a row when I could not prove a mate score.
I plan to increase the size of the test and it may be interesting if people can find shorter mate or alternative solutions or better solutions for the existing positions.
I am not convinced that the mate that I found is the shortest but I ordered the positions based on the shortest mate that I found in analysis.
The easy positions can be solved in few seconds when the hard positions may need a long time to solve when I am not sure if the top engines can find the shortest mate or if I found the shortest mate with the help of engines.
I am not sure if all the mates are correct and engines may also have bugs and maybe I did a mistake.
Here are the positions
6R1/1k1PK3/p3P3/7p/6p1/8/5r1P/8 b - - 4 42 bm -mate in 9 ystein Sande-Aurel Anton
6R1/1k1P4/p3PK2/7p/6p1/8/5r1P/8 w - - 3 42 bm 42.Ke7 mate in 10 ystein Sande-Aurel Anton
6R1/1k1P4/p3PK2/7p/6p1/8/4r2P/8 b - - 2 41 bm -mate in 10 ystein Sande-Aurel Anton
6R1/1k1P4/p3P3/4K2p/6p1/8/4r2P/8 w - - 1 41 bm 41.Kd4 or 41.Kf6 or 41.Kf5 or 41.Kf4 or 41.Kd5 mate in 11 ystein Sande-Aurel Anton
1k6/6R1/p2PP3/4K2p/6p1/8/5r1P/8 w - - 1 39 bm 39.e7 mate in 11 ystein Sande-Aurel Anton
1k3r2/6R1/p3P3/3PK2p/6p1/8/7P/8 w - - 0 38 bm 38.e7 or 38.Rf7 mate in 11 ystein Sande-Aurel Anton
Rrk2r2/6R1/p3P3/3PK2p/6p1/8/7P/8 w - - 6 37 bm 37.Rf7 or Rga7 mate in 11 ystein Sande-Aurel Anton
6R1/1k1P4/p3P3/4K2p/6p1/8/5r1P/8 b - - 0 40 bm -mate in 11 ystein Sande-Aurel Anton
1Rk2r2/6R1/p3P3/3PK2p/6p1/8/7P/8 b - - 0 37 bm -mate in 11 ystein Sande-Aurel Anton
R1k2r2/6R1/p3P3/3PK2p/6p1/8/1r5P/8 b - - 5 36 bm 36...Rb8 -mate in 11 ystein Sande-Aurel Anton
6R1/1k6/p2PP3/4K2p/6p1/8/5r1P/8 w - - 3 40 bm 40.d7 or 40.e7 mate in 12 ystein Sande-Aurel Anton
2k2r2/R5R1/p3P3/3PK2p/6p1/8/1r5P/8 w - - 4 36 bm 36.Ra8+ mate in 12 ystein Sande-Aurel Anton
1r1k3r/2R3Rp/p7/3PP1p1/8/8/6KP/8 w - - 5 31 bm 31.e6 mate in 12 ystein Sande-Aurel Anton
1k4R1/8/p2PP3/4K2p/6p1/8/5r1P/8 b - - 2 39 bm -mate in 12 ystein Sande-Aurel Anton
1k3r2/6R1/p2PP3/4K2p/6p1/8/7P/8 b - - 0 38 bm 38...Rf1 -mate in 12 ystein Sande-Aurel Anton
3k1r2/R5R1/p3P3/3PK2p/6p1/8/1r5P/8 b - - 3 35 bm 35...Kc8 -mate in 12 ystein Sande-Aurel Anton
1rk4r/2R3Rp/p7/3PP1p1/8/8/6KP/8 b - - 4 30 bm - mate in 12 ystein Sande-Aurel Anton
3k1r2/R5R1/p3P3/3P3p/5Kp1/8/1r5P/8 w - - 2 35 bm 35.Ke5 or 35.Kg5 mate in 13 ystein Sande-Aurel Anton
3k3r/R5R1/p3P3/3P3p/6p1/5K2/1r5P/8 w - - 0 34 bm 34.Ke4 mate in 13 ystein Sande-Aurel Anton
1rk4r/5RRp/p7/3PP1p1/8/8/6KP/8 w - - 3 30 bm 30.Rc7+ mate in 13 ystein Sande-Aurel Anton
r1k4r/5RRp/p7/3PP1p1/8/8/6KP/8 b - - 2 29 bm -mate in 13 ystein Sande-Aurel Anton
r1k4r/6Rp/p7/3PPRp1/8/8/6KP/8 w - - 1 29 bm 29.Rff7 mate in 14 ystein Sande-Aurel Anton
8/1p6/p7/3p2k1/5pP1/1P1K1P2/1b6/8 b - - 1 58 bm 58...Kh4 mate in 14 Aurel Anton-Horst Weisenburger
3k3r/R5R1/p3P3/3P3p/5Kp1/8/1r5P/8 b - - 1 34 bm 34...Kc8 -mate in 14 ystein Sande-Aurel Anton
3k3r/R5R1/p3P3/3P2pp/8/5K2/1r5P/8 b - - 2 33 bm -mate in 14 ystein Sande-Aurel Anton
r2k3r/6Rp/p7/3PPpp1/8/8/6KP/5R2 w - - 0 28 bm 28.e6 mate in 15 ystein Sande-Aurel Anton
3k3r/R5R1/p3P3/3P2pp/8/8/1r4KP/8 w - - 1 33 bm 33.Kf3 mate in 15 ystein Sande-Aurel Anton
r2k3r/6Rp/p4p2/3PPpB1/8/8/6KP/5R2 b - - 0 27 bm 27...fxg5 - mate in 15 ystein Sande-Aurel Anton
1r1k3r/R5R1/p3P3/3P2pp/8/8/6KP/8 b - - 0 32 bm -mate in 15 ystein Sande-Aurel Anton
8/1p6/p7/6k1/3p1pP1/1P1K1P2/1b6/8 w - - 0 59 bm 59.b4 -mate in 15 Aurel Anton-Horst Weisenburger
8/1p6/p7/3p2k1/5pP1/1P3P2/1b2K3/8 w - - 0 58 bm 58.Kf2 or -mate in 15 Aurel Anton-Horst Weisenburger
r2k3r/4R1bp/p4p2/3PPpB1/8/8/6KP/5R2 w - - 0 27 bm 27.Rxg7 mate in 16
1r1k3r/R5R1/p7/3PP1pp/8/8/6KP/8 w - h6 0 32 bm 32.e6 mate in 16 ystein Sande-Aurel Anton
8/1p6/p7/3p2k1/3b1pP1/1P3P2/1B2K3/8 b - - 0 57 bm Bxb2 mate in 16 Aurel Anton-Horst Weisenburger
8/1p6/p7/3p2k1/3b1pP1/1P3P2/1B2nK2/8 w - - 0 57 bm 57.Kxe2 or 57.Ke1 -mate in 16 Aurel Anton-Horst Weisenburger
7k/ppp1q2p/n3Pr2/2PP4/1P1Q4/PK2R3/8/8 b - - 0 38 bm 38...Nb8 -mate in 16 Erich Thiele-Horst Weisenburger
7k/ppp1q2p/n3Pr2/3P4/1PPQ4/PK2R3/8/8 w - - 5 38 bm 38.c5 mate in 17 Erich Thiele-Horst Weisenburger
8/1p6/p4b2/3p2k1/3P1pP1/1P3P2/1B2nK2/8 b - - 7 56 bm 56...Bxd4+ mate in 17 Aurel Anton-Horst Weisenburger
8/1p6/p7/P2p2k1/1b1P1pP1/1P3P1K/r3n3/BR6 b - - 0 50 bm 50...Ba3 mate in 18 Aurel Anton-Horst Weisenburger
8/1p6/p5k1/3p4/Pb1P1pP1/1P3P1K/r3n3/BR6 b - - 3 49 bm 49...Ba3 mate in 18 Aurel Anton-Horst Weisenburger
8/1p6/p5k1/3p4/Pb1P1pP1/1P3P1K/r3n3/B4R2 w - - 2 49 bm 49.Rb1 -mate in 18 Aurel Anton-Horst Weisenburger
8/1p4k1/p7/3p4/Pb1P1pP1/1P3P1K/r3n3/B4R2 b - - 1 48 bm 48...Kg6 mate in 19 Aurel Anton-Horst Weisenburger
8/1p4k1/p7/3p4/Pb1P1pP1/1P3P2/r3n2K/B4R2 w - - 0 48 bm 48.Kh3 -mate in 19 Aurel Anton-Horst Weisenburger
8/1p4k1/p7/3p4/Pb1P1pP1/1P3P2/r3B2K/B4Rn1 b - - 0 47 bm 47...Nxe2 mate in 20 Aurel Anton-Horst Weisenburger
8/1p4k1/p7/3p4/Pb1P1pP1/1P3P2/r3B1Kp/B4Rn1 w - - 6 47 bm 47.Kxh2 - mate in 20 Aurel Anton-Horst Weisenburger
8/1p6/p4b2/3p2k1/3P1pP1/1P3P2/1B2n1K1/8 w - - 6 56 bm 56.b4 -mate in 20 Aurel Anton-Horst Weisenburger
8/1p6/p7/3p2k1/Pb1P1pP1/1P3P1K/r3n3/BR6 w - - 4 50 bm 50.Bb2 -mate in 20 Aurel Anton-Horst Weisenburger
3b4/1p6/p7/3p2k1/3P1pP1/1P3P2/1B2n1K1/8 b - - 5 55 bm 55...Bf6 mate in 21 Aurel Anton-Horst Weisenburger
8/1p4k1/p7/3p4/Pb1P1pP1/1P3P1n/r3B1Kp/B4R2 b - - 5 46 bm 46...Ng1 mate in 21 Aurel Anton-Horst Weisenburger
3b4/1p6/p7/3p2k1/3P1pP1/BP3P2/4n1K1/8 w - - 4 55 bm 55.Bd6 Bb2 -mate in 21 Aurel Anton-Horst Weisenburger
8/1p4k1/p7/3p4/Pb1P1pP1/1P3P1n/r3BK1p/B4R2 w - - 4 46 bm 46.Kg2 -Mate in 21
8/1p4k1/p7/3p2n1/Pb1P1pP1/1P3P2/r3BK1p/B4R2 b - - 3 45 bm 45...Nh3+ mate in 22
8/1p6/pb6/3p2k1/3P1pP1/BP3P2/4n1K1/8 b - - 3 54 bm 54...Bd8 mate in 22 Aurel Anton-Horst Weisenburger
8/1p6/pb6/3p2k1/3P1pP1/1P3P2/1B2n1K1/8 w - - 2 54 bm 54.b4 54.Ba4 -mate in 22 Aurel Anton-Horst Weisenburger
8/1p6/p7/b2p2k1/3P1pP1/1P3P2/1B2n1K1/8 b - - 1 53 bm 53...Bb6 mate in 23 Aurel Anton-Horst Weisenburger
8/1p6/p7/b2p2k1/3P1pP1/1P3P1K/1B2n3/8 w - - 0 53 bm 53.Kg2 -mate in 23 Aurel Anton-Horst Weisenburger
8/1p6/p7/P2p2k1/3P1pP1/1P3P1K/1B1bn3/8 b - - 0 52 bm 52...Bxa5 mate in 24 Aurel Anton-Horst Weisenburger
8/1p6/p7/P2p2k1/3P1pP1/1P3P1K/1r1bn3/B7 w - - 0 52 bm 52.Bxb2 -mate in 24 Aurel Anton-Horst Weisenburger
8/1p6/p7/P2p2k1/3P1pP1/1P3P1K/rR1bn3/B7 b - - 2 51 bm 51...Rxb2 mate in 25 Aurel Anton-Horst Weisenburger
8/1p6/p7/P2p2k1/3P1pP1/1P3P1K/r2bn3/BR6 w - - 1 51 bm 51.Rb2 -mate in 25 Aurel Anton-Horst Weisenburger
1r1k3r/R5Rp/p7/3PP1p1/8/8/6KP/8 b - - 6 31 bm 31...Rb2+ -mate in 26 ystein Sande-Aurel Anton
r2k3r/4Rpbp/p5p1/3PPq2/8/5Q2/6KP/2B2R2 w - - 5 25 bm 25.Qe3 mate in 28 ystein Sande-Aurel Anton
r3k2r/4Rpbp/p5p1/3PPq2/8/5Q2/6KP/2B2R2 b kq - 4 24 24...Kd8 -mate in 28 ystein Sande-Aurel Anton
r3k2r/1R3pbp/p5p1/3PPq2/8/5Q2/6KP/2B2R2 w kq - 3 24 24.Re7+ mate in 29 ystein Sande-Aurel Anton
4kr2/1Pb2p2/3p1Rp1/3Bp1P1/K3P3/8/5P2/8 b - - 4 50 bm 50...Kd7 -mate in 29 Vladimir Valentinovich Zaitsev-ystein Sande
4kr2/1Pb2p2/3p1Rp1/3Bp1P1/4P3/1K6/5P2/8 w - - 3 50 bm 50.Ka4 mate in 30 Vladimir Valentinovich Zaitsev-ystein Sande
5r2/1Pb1kp2/3p1Rp1/3Bp1P1/4P3/1K6/5P2/8 b - - 2 49 bm 49...Kd7 -mate in 30 Vladimir Valentinovich Zaitsev-ystein Sande
5r2/1Pb1kp2/3p2p1/3Bp1P1/4P3/1K3R2/5P2/8 w - - 1 49 bm 49.Rf6 mate in 31 Vladimir Valentinovich Zaitsev-ystein Sande
5r2/1Pbk1p2/3p2p1/3Bp1P1/4P3/1K3R2/5P2/8 b - - 0 48 bm -mate in 31 Vladimir Valentinovich Zaitsev-ystein Sande
5r2/1Pbk1p2/3p2p1/3Bp1p1/4P2P/1K3R2/5P2/8 w - - 0 48 bm 48.hxg5 mate in 32 Vladimir Valentinovich Zaitsev-ystein Sande
5r2/1Pbk1p2/3p2pp/3Bp1P1/4P2P/1K3R2/5P2/8 b - - 0 47 bm 47...hxg5 -mate in 32 Vladimir Valentinovich Zaitsev-ystein Sande
r2k3r/4Rpbp/p7/3PPpB1/8/8/6KP/5R2 b - - 1 26 bm 26...Bxe5 -mate in 32 ystein Sande-Aurel Anton
5r2/1Pbk1p2/3p2pp/3Bp3/4P1PP/1K3R2/5P2/8 w - - 13 47 bm 47.g5 mate in 33 Vladimir Valentinovich Zaitsev-ystein Sande
r2k3r/4Rpbp/p7/3PPp2/8/8/6KP/2B2R2 w - - 0 26 bm 26.Bg5 mate in 33 ystein Sande-Aurel Anton
r2k3r/4Rpbp/p5p1/3PPQ2/8/8/6KP/2B2R2 b - - 0 25 bm 25...gxf5 -mate in 33 ystein Sande-Aurel Anton
positions when I did not find a mate score but 1 or 2 plies later I found a mate score.
R7/P5k1/7p/8/4pp1P/3nP3/5PK1/r4B2 w - - 0 44 Georg Danner-Horst Weisenburger
R7/P5k1/7p/8/4pp1P/3BP3/5PK1/r7 b - - 0 44 Georg Danner-Horst Weisenburger
4r3/pk3pp1/1pp1p2p/7P/1PP5/3q1P2/P1QB1n1R/1K6 b - - 3 31 Vladimir Valentinovich Zaitsev-Aurel Anton
4r3/pk3pp1/1pp1p2p/7P/1PP5/5q2/P1QB1n1R/1K6 w - - 0 32 Vladimir Valentinovich Zaitsev-Aurel Anton
1r3k2/R4pp1/2R4p/2n1pP2/8/1P3PnP/2P5/7K w - - 1 39 Erich Thiele-Georg Danner
1r3k2/R4pp1/2R4p/2n1pP2/8/1P3PnP/2P4K/8 b - - 2 39 Erich Thiele-Georg Danner
r2k3r/6Rp/p7/3PPRp1/8/8/6KP/8 b - - 0 28 ystein Sande-Aurel Anton
8/1p4k1/p7/3p2n1/Pb1P1pP1/1P3P2/r3BK1p/B6R w - - 2 45 Aurel Anton-Horst Weisenburger
8/1p4k1/p7/3p2n1/Pb1P1pP1/1P3P2/2r1BK1p/B6R b - - 1 44 Aurel Anton-Horst Weisenburger
5r1k/ppp1q2p/n3P3/3PR3/1PPQ4/PK6/8/8 w - - 3 37 Erich Thiele-Horst Weisenburger
5r1k/ppp1q2p/n3P3/3P4/1PPQ4/PK2R3/8/8 b - - 4 37 Erich Thiele-Horst Weisenburger
r3kb1r/1R3p1p/p5p1/3PPq2/8/5Q2/6KP/2B2R2 b kq - 2 23 ystein Sande-Aurel Anton
r3kb1r/5p1p/p5p1/3PPq2/8/5Q2/6KP/1RB2R2 w kq - 1 23 ystein Sande-Aurel Anton
5qk1/5r1p/2p1b1n1/N1p1p3/N1PpP2b/P2P2Pp/1R5K/4QB2 w - - 3 40 Horst Weisenburger-ystein Sande
5qk1/2r4p/2p1b1n1/N1p1p3/N1PpP2b/P2P2Pp/1R5K/4QB2 b - - 2 39 Horst Weisenburger-ystein Sande
5r2/1Pb1kp2/3p2pp/3Bp3/4P1PP/1K3R2/5P2/8 b - - 12 46 Vladimir Valentinovich Zaitsev-ystein Sande
5r2/1Pb1kp2/3p2pp/3Bp3/4P1PP/5R2/2K2P2/8 w - - 11 46 Vladimir Valentinovich Zaitsev-ystein Sande
6k1/1r3b2/Q3n3/P7/4P3/7P/6PK/8 b - - 0 45 Erich Thiele-ystein Sande
6k1/1r3b2/p2Qn3/P7/4P3/7P/6PK/8 w - - 1 45 Erich Thiele-ystein Sande
see https://www.iccf.com/event?id=38834
I simply took the position when one side resigned and went backward until I got 2 positions in a row when I could not prove a mate score.
I plan to increase the size of the test and it may be interesting if people can find shorter mate or alternative solutions or better solutions for the existing positions.
I am not convinced that the mate that I found is the shortest but I ordered the positions based on the shortest mate that I found in analysis.
The easy positions can be solved in few seconds when the hard positions may need a long time to solve when I am not sure if the top engines can find the shortest mate or if I found the shortest mate with the help of engines.
I am not sure if all the mates are correct and engines may also have bugs and maybe I did a mistake.
Here are the positions
6R1/1k1PK3/p3P3/7p/6p1/8/5r1P/8 b - - 4 42 bm -mate in 9 ystein Sande-Aurel Anton
6R1/1k1P4/p3PK2/7p/6p1/8/5r1P/8 w - - 3 42 bm 42.Ke7 mate in 10 ystein Sande-Aurel Anton
6R1/1k1P4/p3PK2/7p/6p1/8/4r2P/8 b - - 2 41 bm -mate in 10 ystein Sande-Aurel Anton
6R1/1k1P4/p3P3/4K2p/6p1/8/4r2P/8 w - - 1 41 bm 41.Kd4 or 41.Kf6 or 41.Kf5 or 41.Kf4 or 41.Kd5 mate in 11 ystein Sande-Aurel Anton
1k6/6R1/p2PP3/4K2p/6p1/8/5r1P/8 w - - 1 39 bm 39.e7 mate in 11 ystein Sande-Aurel Anton
1k3r2/6R1/p3P3/3PK2p/6p1/8/7P/8 w - - 0 38 bm 38.e7 or 38.Rf7 mate in 11 ystein Sande-Aurel Anton
Rrk2r2/6R1/p3P3/3PK2p/6p1/8/7P/8 w - - 6 37 bm 37.Rf7 or Rga7 mate in 11 ystein Sande-Aurel Anton
6R1/1k1P4/p3P3/4K2p/6p1/8/5r1P/8 b - - 0 40 bm -mate in 11 ystein Sande-Aurel Anton
1Rk2r2/6R1/p3P3/3PK2p/6p1/8/7P/8 b - - 0 37 bm -mate in 11 ystein Sande-Aurel Anton
R1k2r2/6R1/p3P3/3PK2p/6p1/8/1r5P/8 b - - 5 36 bm 36...Rb8 -mate in 11 ystein Sande-Aurel Anton
6R1/1k6/p2PP3/4K2p/6p1/8/5r1P/8 w - - 3 40 bm 40.d7 or 40.e7 mate in 12 ystein Sande-Aurel Anton
2k2r2/R5R1/p3P3/3PK2p/6p1/8/1r5P/8 w - - 4 36 bm 36.Ra8+ mate in 12 ystein Sande-Aurel Anton
1r1k3r/2R3Rp/p7/3PP1p1/8/8/6KP/8 w - - 5 31 bm 31.e6 mate in 12 ystein Sande-Aurel Anton
1k4R1/8/p2PP3/4K2p/6p1/8/5r1P/8 b - - 2 39 bm -mate in 12 ystein Sande-Aurel Anton
1k3r2/6R1/p2PP3/4K2p/6p1/8/7P/8 b - - 0 38 bm 38...Rf1 -mate in 12 ystein Sande-Aurel Anton
3k1r2/R5R1/p3P3/3PK2p/6p1/8/1r5P/8 b - - 3 35 bm 35...Kc8 -mate in 12 ystein Sande-Aurel Anton
1rk4r/2R3Rp/p7/3PP1p1/8/8/6KP/8 b - - 4 30 bm - mate in 12 ystein Sande-Aurel Anton
3k1r2/R5R1/p3P3/3P3p/5Kp1/8/1r5P/8 w - - 2 35 bm 35.Ke5 or 35.Kg5 mate in 13 ystein Sande-Aurel Anton
3k3r/R5R1/p3P3/3P3p/6p1/5K2/1r5P/8 w - - 0 34 bm 34.Ke4 mate in 13 ystein Sande-Aurel Anton
1rk4r/5RRp/p7/3PP1p1/8/8/6KP/8 w - - 3 30 bm 30.Rc7+ mate in 13 ystein Sande-Aurel Anton
r1k4r/5RRp/p7/3PP1p1/8/8/6KP/8 b - - 2 29 bm -mate in 13 ystein Sande-Aurel Anton
r1k4r/6Rp/p7/3PPRp1/8/8/6KP/8 w - - 1 29 bm 29.Rff7 mate in 14 ystein Sande-Aurel Anton
8/1p6/p7/3p2k1/5pP1/1P1K1P2/1b6/8 b - - 1 58 bm 58...Kh4 mate in 14 Aurel Anton-Horst Weisenburger
3k3r/R5R1/p3P3/3P3p/5Kp1/8/1r5P/8 b - - 1 34 bm 34...Kc8 -mate in 14 ystein Sande-Aurel Anton
3k3r/R5R1/p3P3/3P2pp/8/5K2/1r5P/8 b - - 2 33 bm -mate in 14 ystein Sande-Aurel Anton
r2k3r/6Rp/p7/3PPpp1/8/8/6KP/5R2 w - - 0 28 bm 28.e6 mate in 15 ystein Sande-Aurel Anton
3k3r/R5R1/p3P3/3P2pp/8/8/1r4KP/8 w - - 1 33 bm 33.Kf3 mate in 15 ystein Sande-Aurel Anton
r2k3r/6Rp/p4p2/3PPpB1/8/8/6KP/5R2 b - - 0 27 bm 27...fxg5 - mate in 15 ystein Sande-Aurel Anton
1r1k3r/R5R1/p3P3/3P2pp/8/8/6KP/8 b - - 0 32 bm -mate in 15 ystein Sande-Aurel Anton
8/1p6/p7/6k1/3p1pP1/1P1K1P2/1b6/8 w - - 0 59 bm 59.b4 -mate in 15 Aurel Anton-Horst Weisenburger
8/1p6/p7/3p2k1/5pP1/1P3P2/1b2K3/8 w - - 0 58 bm 58.Kf2 or -mate in 15 Aurel Anton-Horst Weisenburger
r2k3r/4R1bp/p4p2/3PPpB1/8/8/6KP/5R2 w - - 0 27 bm 27.Rxg7 mate in 16
1r1k3r/R5R1/p7/3PP1pp/8/8/6KP/8 w - h6 0 32 bm 32.e6 mate in 16 ystein Sande-Aurel Anton
8/1p6/p7/3p2k1/3b1pP1/1P3P2/1B2K3/8 b - - 0 57 bm Bxb2 mate in 16 Aurel Anton-Horst Weisenburger
8/1p6/p7/3p2k1/3b1pP1/1P3P2/1B2nK2/8 w - - 0 57 bm 57.Kxe2 or 57.Ke1 -mate in 16 Aurel Anton-Horst Weisenburger
7k/ppp1q2p/n3Pr2/2PP4/1P1Q4/PK2R3/8/8 b - - 0 38 bm 38...Nb8 -mate in 16 Erich Thiele-Horst Weisenburger
7k/ppp1q2p/n3Pr2/3P4/1PPQ4/PK2R3/8/8 w - - 5 38 bm 38.c5 mate in 17 Erich Thiele-Horst Weisenburger
8/1p6/p4b2/3p2k1/3P1pP1/1P3P2/1B2nK2/8 b - - 7 56 bm 56...Bxd4+ mate in 17 Aurel Anton-Horst Weisenburger
8/1p6/p7/P2p2k1/1b1P1pP1/1P3P1K/r3n3/BR6 b - - 0 50 bm 50...Ba3 mate in 18 Aurel Anton-Horst Weisenburger
8/1p6/p5k1/3p4/Pb1P1pP1/1P3P1K/r3n3/BR6 b - - 3 49 bm 49...Ba3 mate in 18 Aurel Anton-Horst Weisenburger
8/1p6/p5k1/3p4/Pb1P1pP1/1P3P1K/r3n3/B4R2 w - - 2 49 bm 49.Rb1 -mate in 18 Aurel Anton-Horst Weisenburger
8/1p4k1/p7/3p4/Pb1P1pP1/1P3P1K/r3n3/B4R2 b - - 1 48 bm 48...Kg6 mate in 19 Aurel Anton-Horst Weisenburger
8/1p4k1/p7/3p4/Pb1P1pP1/1P3P2/r3n2K/B4R2 w - - 0 48 bm 48.Kh3 -mate in 19 Aurel Anton-Horst Weisenburger
8/1p4k1/p7/3p4/Pb1P1pP1/1P3P2/r3B2K/B4Rn1 b - - 0 47 bm 47...Nxe2 mate in 20 Aurel Anton-Horst Weisenburger
8/1p4k1/p7/3p4/Pb1P1pP1/1P3P2/r3B1Kp/B4Rn1 w - - 6 47 bm 47.Kxh2 - mate in 20 Aurel Anton-Horst Weisenburger
8/1p6/p4b2/3p2k1/3P1pP1/1P3P2/1B2n1K1/8 w - - 6 56 bm 56.b4 -mate in 20 Aurel Anton-Horst Weisenburger
8/1p6/p7/3p2k1/Pb1P1pP1/1P3P1K/r3n3/BR6 w - - 4 50 bm 50.Bb2 -mate in 20 Aurel Anton-Horst Weisenburger
3b4/1p6/p7/3p2k1/3P1pP1/1P3P2/1B2n1K1/8 b - - 5 55 bm 55...Bf6 mate in 21 Aurel Anton-Horst Weisenburger
8/1p4k1/p7/3p4/Pb1P1pP1/1P3P1n/r3B1Kp/B4R2 b - - 5 46 bm 46...Ng1 mate in 21 Aurel Anton-Horst Weisenburger
3b4/1p6/p7/3p2k1/3P1pP1/BP3P2/4n1K1/8 w - - 4 55 bm 55.Bd6 Bb2 -mate in 21 Aurel Anton-Horst Weisenburger
8/1p4k1/p7/3p4/Pb1P1pP1/1P3P1n/r3BK1p/B4R2 w - - 4 46 bm 46.Kg2 -Mate in 21
8/1p4k1/p7/3p2n1/Pb1P1pP1/1P3P2/r3BK1p/B4R2 b - - 3 45 bm 45...Nh3+ mate in 22
8/1p6/pb6/3p2k1/3P1pP1/BP3P2/4n1K1/8 b - - 3 54 bm 54...Bd8 mate in 22 Aurel Anton-Horst Weisenburger
8/1p6/pb6/3p2k1/3P1pP1/1P3P2/1B2n1K1/8 w - - 2 54 bm 54.b4 54.Ba4 -mate in 22 Aurel Anton-Horst Weisenburger
8/1p6/p7/b2p2k1/3P1pP1/1P3P2/1B2n1K1/8 b - - 1 53 bm 53...Bb6 mate in 23 Aurel Anton-Horst Weisenburger
8/1p6/p7/b2p2k1/3P1pP1/1P3P1K/1B2n3/8 w - - 0 53 bm 53.Kg2 -mate in 23 Aurel Anton-Horst Weisenburger
8/1p6/p7/P2p2k1/3P1pP1/1P3P1K/1B1bn3/8 b - - 0 52 bm 52...Bxa5 mate in 24 Aurel Anton-Horst Weisenburger
8/1p6/p7/P2p2k1/3P1pP1/1P3P1K/1r1bn3/B7 w - - 0 52 bm 52.Bxb2 -mate in 24 Aurel Anton-Horst Weisenburger
8/1p6/p7/P2p2k1/3P1pP1/1P3P1K/rR1bn3/B7 b - - 2 51 bm 51...Rxb2 mate in 25 Aurel Anton-Horst Weisenburger
8/1p6/p7/P2p2k1/3P1pP1/1P3P1K/r2bn3/BR6 w - - 1 51 bm 51.Rb2 -mate in 25 Aurel Anton-Horst Weisenburger
1r1k3r/R5Rp/p7/3PP1p1/8/8/6KP/8 b - - 6 31 bm 31...Rb2+ -mate in 26 ystein Sande-Aurel Anton
r2k3r/4Rpbp/p5p1/3PPq2/8/5Q2/6KP/2B2R2 w - - 5 25 bm 25.Qe3 mate in 28 ystein Sande-Aurel Anton
r3k2r/4Rpbp/p5p1/3PPq2/8/5Q2/6KP/2B2R2 b kq - 4 24 24...Kd8 -mate in 28 ystein Sande-Aurel Anton
r3k2r/1R3pbp/p5p1/3PPq2/8/5Q2/6KP/2B2R2 w kq - 3 24 24.Re7+ mate in 29 ystein Sande-Aurel Anton
4kr2/1Pb2p2/3p1Rp1/3Bp1P1/K3P3/8/5P2/8 b - - 4 50 bm 50...Kd7 -mate in 29 Vladimir Valentinovich Zaitsev-ystein Sande
4kr2/1Pb2p2/3p1Rp1/3Bp1P1/4P3/1K6/5P2/8 w - - 3 50 bm 50.Ka4 mate in 30 Vladimir Valentinovich Zaitsev-ystein Sande
5r2/1Pb1kp2/3p1Rp1/3Bp1P1/4P3/1K6/5P2/8 b - - 2 49 bm 49...Kd7 -mate in 30 Vladimir Valentinovich Zaitsev-ystein Sande
5r2/1Pb1kp2/3p2p1/3Bp1P1/4P3/1K3R2/5P2/8 w - - 1 49 bm 49.Rf6 mate in 31 Vladimir Valentinovich Zaitsev-ystein Sande
5r2/1Pbk1p2/3p2p1/3Bp1P1/4P3/1K3R2/5P2/8 b - - 0 48 bm -mate in 31 Vladimir Valentinovich Zaitsev-ystein Sande
5r2/1Pbk1p2/3p2p1/3Bp1p1/4P2P/1K3R2/5P2/8 w - - 0 48 bm 48.hxg5 mate in 32 Vladimir Valentinovich Zaitsev-ystein Sande
5r2/1Pbk1p2/3p2pp/3Bp1P1/4P2P/1K3R2/5P2/8 b - - 0 47 bm 47...hxg5 -mate in 32 Vladimir Valentinovich Zaitsev-ystein Sande
r2k3r/4Rpbp/p7/3PPpB1/8/8/6KP/5R2 b - - 1 26 bm 26...Bxe5 -mate in 32 ystein Sande-Aurel Anton
5r2/1Pbk1p2/3p2pp/3Bp3/4P1PP/1K3R2/5P2/8 w - - 13 47 bm 47.g5 mate in 33 Vladimir Valentinovich Zaitsev-ystein Sande
r2k3r/4Rpbp/p7/3PPp2/8/8/6KP/2B2R2 w - - 0 26 bm 26.Bg5 mate in 33 ystein Sande-Aurel Anton
r2k3r/4Rpbp/p5p1/3PPQ2/8/8/6KP/2B2R2 b - - 0 25 bm 25...gxf5 -mate in 33 ystein Sande-Aurel Anton
positions when I did not find a mate score but 1 or 2 plies later I found a mate score.
R7/P5k1/7p/8/4pp1P/3nP3/5PK1/r4B2 w - - 0 44 Georg Danner-Horst Weisenburger
R7/P5k1/7p/8/4pp1P/3BP3/5PK1/r7 b - - 0 44 Georg Danner-Horst Weisenburger
4r3/pk3pp1/1pp1p2p/7P/1PP5/3q1P2/P1QB1n1R/1K6 b - - 3 31 Vladimir Valentinovich Zaitsev-Aurel Anton
4r3/pk3pp1/1pp1p2p/7P/1PP5/5q2/P1QB1n1R/1K6 w - - 0 32 Vladimir Valentinovich Zaitsev-Aurel Anton
1r3k2/R4pp1/2R4p/2n1pP2/8/1P3PnP/2P5/7K w - - 1 39 Erich Thiele-Georg Danner
1r3k2/R4pp1/2R4p/2n1pP2/8/1P3PnP/2P4K/8 b - - 2 39 Erich Thiele-Georg Danner
r2k3r/6Rp/p7/3PPRp1/8/8/6KP/8 b - - 0 28 ystein Sande-Aurel Anton
8/1p4k1/p7/3p2n1/Pb1P1pP1/1P3P2/r3BK1p/B6R w - - 2 45 Aurel Anton-Horst Weisenburger
8/1p4k1/p7/3p2n1/Pb1P1pP1/1P3P2/2r1BK1p/B6R b - - 1 44 Aurel Anton-Horst Weisenburger
5r1k/ppp1q2p/n3P3/3PR3/1PPQ4/PK6/8/8 w - - 3 37 Erich Thiele-Horst Weisenburger
5r1k/ppp1q2p/n3P3/3P4/1PPQ4/PK2R3/8/8 b - - 4 37 Erich Thiele-Horst Weisenburger
r3kb1r/1R3p1p/p5p1/3PPq2/8/5Q2/6KP/2B2R2 b kq - 2 23 ystein Sande-Aurel Anton
r3kb1r/5p1p/p5p1/3PPq2/8/5Q2/6KP/1RB2R2 w kq - 1 23 ystein Sande-Aurel Anton
5qk1/5r1p/2p1b1n1/N1p1p3/N1PpP2b/P2P2Pp/1R5K/4QB2 w - - 3 40 Horst Weisenburger-ystein Sande
5qk1/2r4p/2p1b1n1/N1p1p3/N1PpP2b/P2P2Pp/1R5K/4QB2 b - - 2 39 Horst Weisenburger-ystein Sande
5r2/1Pb1kp2/3p2pp/3Bp3/4P1PP/1K3R2/5P2/8 b - - 12 46 Vladimir Valentinovich Zaitsev-ystein Sande
5r2/1Pb1kp2/3p2pp/3Bp3/4P1PP/5R2/2K2P2/8 w - - 11 46 Vladimir Valentinovich Zaitsev-ystein Sande
6k1/1r3b2/Q3n3/P7/4P3/7P/6PK/8 b - - 0 45 Erich Thiele-ystein Sande
6k1/1r3b2/p2Qn3/P7/4P3/7P/6PK/8 w - - 1 45 Erich Thiele-ystein Sande