1R1Rn3/4K3/p7/kb4n1/6p6/PP6/3ppp2/1Q6 w 0 1 - A. Andersen (1846)
N1rb4/1p3p1p/1p6/1R5K/8/p3p1PN/1PP1R3/N6k w 0 1 - Sam Loyd (1876)
1r3n2/2pB1pq1/1bR3p1/N2NR2b/KP1kpp1r/1p2p3/1pp2Q1n/8 w 0 1 - Phil Klett (3 5-move mates)
8/4R3/8/1B1k4/4p1N1/8/8/6BK w 0 1 - William Shinkman (1903)
K7/8/1RK6/8/8/5N2/8/8 w 0 1 - William Shinkman (1903)
8/8/2B1N3/3rp3/4k2K/2r3Pn/1b1N4 w 0 1 - Johannes Kohtz (1865)
7k/8/5N1P/8/8/5bp1/8/B5K1 w 0 1 - Johannes Kohtz (1875)
8/6K1/8/2p2N1k/8/8/4N1P1/8 w 0 1 - Minoslav Havel (1918)
The puzzles above taken from Classic Chess Puzzles. All solutions are 5-move mate and relatively simple. Some have more than 1 forced 5 move mate.
enjoy
Gentelmen, check your engines: 5-move mate puzzles - have fun
Moderators: hgm, Rebel, chrisw
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Re: Gentelmen, check your engines: 5-move mate puzzles - have fun
The second FEN string (Sam Loyd) is incorrect. It should be...
n1rb4/1p3p1p/1p6/1R5K/8/p3p1PN/1PP1R3/N6k w 0 1
(N.B. a BLACK knight on a8, not a white knight as given.)
The position as it stands is a mate in 6 by the same b4.
n1rb4/1p3p1p/1p6/1R5K/8/p3p1PN/1PP1R3/N6k w 0 1
(N.B. a BLACK knight on a8, not a white knight as given.)
The position as it stands is a mate in 6 by the same b4.
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Re: Gentelmen, check your engines: 5-move mate puzzles - have fun
For the first one, Pygmalion finds a mate in 5 (9 ply) with Qe1
Code: Select all
set-fen 1R1Rn3/4K3/p7/kb4n1/6p6/PP6/3ppp2/1Q6 w - -
New position: 1R1Rn3/4K3/p7/kb4n1/6p1/PP6/3ppp2/1Q6 w - -
debug-pvs 20
0: +8.10156 - Rxe8 Bxe8 Rxe8
15.0 N in 56.5 mcs => 265 kN/s
1: +8.10156 - Rxe8 Bxe8 Rxe8
35.0 N in 37.5 mcs => 933 kN/s
2: +8.07812 - b4 Ka4 Rxb5 Kxb5 Rxe8
885 N in 607 mcs => 1.46 MN/s
3: +8.07812 - b4 Ka4 Rxb5 Kxb5 Rxe8
999 N in 514 mcs => 1.94 MN/s
4: +8.06445 - Rxb5 xb5 b4 Kb6 Rxe8
9.95 kN in 4.89 ms => 2.03 MN/s
5: +8.06445 - Rxb5 xb5 b4 Kb6 Rxe8
8.11 kN in 3.46 ms => 2.34 MN/s
6: +8.07227 - Rxb5 xb5 Ra8 Kb6 Qg6 Kb7 Rxe8
26.4 kN in 12.5 ms => 2.12 MN/s
7: +8.07227 - Rxb5 xb5 Ra8 Kb6 Qg6 Kb7 Rxe8
55.2 kN in 22.7 ms => 2.43 MN/s
8: +8.05469 - Rxb5 xb5 Ra8 Kb6 Qg6 Kb7 Qa6 Kc7 Rxe8
1.29 MN in 615 ms => 2.10 MN/s
9: +8.05469 - Rxb5 xb5 Ra8 Kb6 Qg6 Kb7 Qa6 Kc7 Rxe8
705 kN in 309 ms => 2.28 MN/s
10: +8.08984 - Rxb5 xb5 Ra8 Kb6 Qg6 Kc7 Ra7 Kb8 Qb6 Kc8 Kxe8
1.88 MN in 843 ms => 2.23 MN/s
11: +8.08984 - Rxb5 xb5 Ra8 Kb6 Qg6 Kc7 Ra7 Kb8 Qb6 Kc8 Kxe8
4.36 MN in 1.93 s => 2.25 MN/s
12: +11.127 - Rxb5 xb5 Ra8 Kb6 Qg6 Kc5 Qxg5 Kc6 Qg6 Kc7 Qc2 Kb6 Rxe8
4.91 MN in 2.00 s => 2.46 MN/s
13: +11.127 - Rxb5 xb5 Ra8 Kb6 Qg6 Kc5 Qxg5 Kc6 Qg6 Kc7 Qc2 Kb6 Rxe8
41.7 MN in 18.6 s => 2.24 MN/s
14: +M9 - Qe1 f1=N Rxd2 Nf3 Rd4 N1d2 Ra4 Bxa4 b4
201 MN in 80.0 s => 2.51 MN/s
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Re: Gentelmen, check your engines: 5-move mate puzzles - have fun
Second one (with Martins corrections): Pygmalion says b4 is mate in 5:
Code: Select all
set-fen n1rb4/1p3p1p/1p6/1R5K/8/p3p1PN/1PP1R3/N6k w - -
New position: n1rb4/1p3p1p/1p6/1R5K/8/p3p1PN/1PP1R3/N6k w - -
debug-pvs 20
0: +3.04883 - Rxe3 xb2 Rxb2
15.0 N in 76.8 mcs => 195 kN/s
1: +3.04883 - Rxe3 xb2 Rxb2
38.0 N in 39.2 mcs => 969 kN/s
2: +3.0293 - Rxe3 Kg2
876 N in 705 mcs => 1.24 MN/s
3: +3.03125 - Rxe3 Kg2 g4
1.49 kN in 1.03 ms => 1.44 MN/s
4: +4.04883 - xa3 Rc5 Rxc5 xc5 Rxe3
9.36 kN in 6.30 ms => 1.49 MN/s
5: +4.04883 - xa3 Rc5 Rxc5 xc5 Rxe3
2.67 kN in 1.24 ms => 2.14 MN/s
6: +4.01758 - xa3 Rc5 Rxc5 xc5 c3 Nb6 Rxe3
68.3 kN in 34.7 ms => 1.97 MN/s
7: +4.01758 - xa3 Rc5 Rxc5 xc5 c3 Nb6 Rxe3
69.7 kN in 31.6 ms => 2.21 MN/s
8: +4.00781 - xa3 Rc5 Rxc5 xc5 Rxe3 Bf6 Nb3 Kg2
1.31 MN in 654 ms => 2.01 MN/s
9: +6.08984 - b4 Bg5 Rf5 Bf4 xf4 Rc4 Rxf7 Rxb4 Rxe3
854 kN in 378 ms => 2.26 MN/s
10: +7.04297 - b4 Bg5 Rf5 Bf4 xf4 f6 Rxe3 a2 Kh6 Rd8 Rxf6
625 kN in 276 ms => 2.27 MN/s
11: +9.07422 - b4 Rc5 xc5 a2 c3 Bf6 Rxa2 e2 Rb1 Kh2 Rxa8 Kxh3 Rxb6 Bxc3 Rxb7
2.44 MN in 1.06 s => 2.31 MN/s
12: +12.0879 - b4 Rc5 xc5 a2 xb6 Bc7 xc7 Nxc7 Rxb7 Nd5 Kh6 f6 Kxh7
5.53 MN in 2.18 s => 2.54 MN/s
13: +M9 - b4 Rc5 xc5 a2 c6 f5 Rxf5 Nc7 Rf1
40.7 MN in 16.0 s => 2.54 MN/s
14: +M9 - b4 Rc5 xc5 a2 c6 Bc7 xb7 Bd6 xa8=B
78.9 MN in 31.7 s => 2.49 MN/s
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Re: Gentelmen, check your engines: 5-move mate puzzles - have fun
Fourth one: Pygmalion says Bb6 is a mate in 5
Code: Select all
set-fen 8/4R3/8/1B1k4/4p1N1/8/8/6BK w - -
New position: 8/4R3/8/1B1k4/4p1N1/8/8/6BK w - -
debug-pvs 20
0: +13.1621 -
3.00 N in 35.7 mcs => 84.0 kN/s
1: +13.1934 - Be3
40.0 N in 36.7 mcs => 1.09 MN/s
2: +14.2031 - Nf6 Kd6 Rxe4
138 N in 104 mcs => 1.32 MN/s
3: +14.2031 - Nf6 Kd6 Rxe4
1.31 kN in 730 mcs => 1.79 MN/s
4: +14.2324 - Nf6 Kd6 Re8 Kc7 Nxe4
2.82 kN in 1.19 ms => 2.36 MN/s
5: +14.2324 - Nf6 Kd6 Re8 Kc7 Nxe4
29.7 kN in 12.8 ms => 2.32 MN/s
6: +14.248 - Nf6 Kd6 Re8 Kc7 Bc5 Kb7 Nxe4
57.5 kN in 22.4 ms => 2.57 MN/s
7: +14.2578 - Nf6 Kd6 Rxe4 Kc7 Re8 Kb7 Be3
583 kN in 202 ms => 2.89 MN/s
8: +14.2676 - Nh6 e3 Bxe3 Kd6 Re8 Kd5 Kg2 Kd6
1.19 MN in 448 ms => 2.67 MN/s
9: +14.2812 - Bb6 Kd6 Re8 Kd5 Nf6 Kd6 Kg2 e3 Bxe3
12.5 MN in 4.33 s => 2.88 MN/s
10: +M9 - Bb6 Kd6 Re8 Kd5 Nf6 Kd6 Bd7 e3 Re6
19.3 MN in 7.11 s => 2.71 MN/s
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Re: Gentelmen, check your engines: 5-move mate puzzles - have fun
Fifth one seem's to have a typo in it (two white kings!?)
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Re: Gentelmen, check your engines: 5-move mate puzzles - have fun.
Hello:
https://yacpdb.org/#66398
Regards from Spain.
Ajedrecista.
According to the given source (the author), the black king is on a8:
https://yacpdb.org/#66398
Regards from Spain.
Ajedrecista.
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Re: Gentelmen, check your engines: 5-move mate puzzles - have fun.
I think I still have the wrong position (?):Ajedrecista wrote: ↑Wed Sep 08, 2021 8:34 pm Hello:
According to the given source (the author), the black king is on a8:
https://yacpdb.org/#66398
Regards from Spain.
Ajedrecista.
[fen]k7/8/1RK5/8/8/5N2/8/8 w - - 0 1[/fen]
Since the mate from the FEN-string that I posted above seems to be rather trivial:
Code: Select all
set-fen k7/8/1RK6/8/8/5N2/8/8 w - -
New position: k7/8/1RK5/8/8/5N2/8/8 w - -
debug-board
8|k.......
7|........
6|.RK.....
5|........
4|........
3|.....N..
2|........
1|........
-+--------
|abcdefgh
____
Material: +8
Hash: b6c37a97a6a73b72
Signature: 3|1||1|0|1|0|0|2
Player + is on the move.
debug-pvs 20
0: +8.16016 -
1.00 N in 40.4 mcs => 24.8 kN/s
1: +8.19531 - Kd7
29.0 N in 111 mcs => 260 kN/s
2: +8.18555 - Kd7 Ka7
45.0 N in 62.6 mcs => 719 kN/s
3: +8.19141 - Kd7 Ka7 Rb5
544 N in 524 mcs => 1.04 MN/s
4: +8.19336 - Kd7 Ka7 Rb5 Ka6
904 N in 670 mcs => 1.35 MN/s
5: +8.20898 - Kd5 Ka7 Kc5 Ka8 Kd4
8.42 kN in 4.91 ms => 1.71 MN/s
6: +M5 - Kd7 Ka7 Kc7 Ka8 Ra6
12.2 kN in 6.89 ms => 1.78 MN/s
7: +M5 - Kd7 Ka7 Kc7 Ka8 Ra6
94.1 kN in 71.0 ms => 1.33 MN/s
8: +M5 - Kd7 Ka7 Kc7 Ka8 Ra6
134 kN in 101 ms => 1.33 MN/s
9: +M5 - Kd7 Ka7 Kc7 Ka8 Ra6
916 kN in 435 ms => 2.11 MN/s
10: +M5 - Kd7 Ka7 Kc7 Ka8 Ra6
1.47 MN in 727 ms => 2.03 MN/s
11: +M5 - Kd7 Ka7 Kc7 Ka8 Ra6
11.8 MN in 4.91 s => 2.39 MN/s
12: +M5 - Kd7 Ka7 Kc7 Ka8 Ra6
22.1 MN in 10.7 s => 2.07 MN/s
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