Author: Dieter Buerssner
Date: 09:17:35 05/09/04
Go up one level in this thread
On May 09, 2004 at 09:15:36, Ed Trice wrote:
>This is excellent and exactly what I was looking for! I guess where you gave
>Black-to-move longest wins for white, it is safe to play the black move then
>show the white to move position. I would do thihs for the sake of comparing
>apples to apples in the paper.
>
>If there is some strange circumstance where the longest white to move win does
>not feature the black-to-move position with the 1st black move being made,
>please let me know.
I did not check the concrete positions, but I think, one cannot be sure in
general (perhaps I think wrongly ...). Here is what my code spits out (white =
stronger side to move), including one sample PV:
KNPKP:
[D] k7/3P4/2n5/K7/8/8/3N4/8 w - - 0 1
(out of 5 mate in 97 positions)
1.Kb6 {EGTB} 1...Nb8! 2.d8=B!! Nd7+! 3.Kc7!
Nc5! 4.Kc6!! Nd3! 5.Ne4! Ne5+! 6.Kc7! Nd3!
7.Bf6!! Ka7! 8.Kc6!! Nb4+! 9.Kb5!! Nd5!
10.Bd8!! Kb7 11.Nd6+!! Kb8! 12.Kc5! Nf4!
13.Kc6! Nd3 14.Bf6!! Ka7! 15.Kb5! Nf4 16.Bd4+!
Ka8 17.Kb6! Nd5+! 18.Kc5!! Nf4! 19.Be3! Nd3+!
20.Kc4! Ne5+! 21.Kd5!! Nd7! 22.Bd4! Nf8!
23.Kc6! Ng6! 24.Ne4! Ne7+! 25.Kc7 Nd5+! 26.Kd6!
Nb4! 27.Bc3! Na6! 28.Kc6!! Ka7! 29.Nd6! Nb8+!
30.Kb5! Nd7! 31.Bd4+! Ka8! 32.Kc6! Nb8+!
33.Kc7! Na6+! 34.Kb6! Nc7 35.Nf5! Nd5+! 36.Kc6!
Nb4+! 37.Kc5! Na6+! 38.Kb6! Nb8! 39.Ne7! Nd7+!
40.Kc7! Nc5! 41.Kc6! Ne6! 42.Bb6 Ng5! 43.Be3!
Ne4! 44.Nc8 Kb8! 45.Nb6! Nc3! 46.Bf4+! Ka7
47.Nd7 Ne2! 48.Be3+!! Ka8! 49.Nb6+! Kb8 50.Nc4!
Nc3 51.Nd6! Ka8! 52.Bc5 Kb8! 53.Bd4! Ne2!
54.Be5! Ka8! 55.Kd5! Ng1! 56.Bf4 Ne2! 57.Bh2!
Ka7! 58.Ne4 Kb6! 59.Kc4!! Kc6! 60.Nd2! Nc1!
61.Nf3! Ne2! 62.Ne1! Nc1 63.Nc2! Na2 64.Bg3 Nc1
65.Nd4+!! Kb6 66.Bd6! Na2! 67.Ba3 Kc7! 68.Kb3!
Nc1+! 69.Bxc1! Kd6! 70.Bf4+ Kd5 71.Kc3! Ke4!
72.Bc7! Ke3! 73.Bg3! Ke4 74.Kc4! Ke3 75.Kd5!
Kd2! 76.Bf2 Kd3! 77.Bg1! Kc3 78.Nf5 Kb3! 79.Bf2
Kb4 80.Bd4! Kb5 81.Ne3! Ka5 82.Kc6! Ka6!
83.Nd5! Ka5 84.Bb6+! Ka4! 85.Kc5! Kb3! 86.Ba5!
Ka4 87.Bd2 Ka3 88.Kc4! Kb2! 89.Bc3+ Ka3!
90.Bb4+ Kb2! 91.Ne3! Ka2 92.Kc3! Ka1 93.Ba3 Kb1
94.Kb3! Ka1 95.Nc4 Kb1 96.Nd2+! Ka1 97.Bb2#!
!! means, only move that wins, ! means only move that leads to the shortest mate
for the attacker, longest mate for the defender.
KBPKB:
[D] 8/8/6B1/8/2P5/8/2K5/k4b2 w - - 0 1
(out of 14 mate in 51 positions)
1.c5 {EGTB} 1...Bg2! 2.Kb3!! Bd5+! 3.Ka3!! Bc6!
4.Bh7 Bd5 5.Bd3! Bc6 6.Bc4 Bb7 7.Be6 Ba8 8.Kb3!
Bc6! 9.Bf7 Bb7 10.Kc3 Bc6! 11.Bc4! Kb1! 12.Be6!
Be8! 13.Bd5! Kc1 14.Bb7! Bh5! 15.Bc8! Bf3!
16.Be6 Bc6! 17.Kd4! Kc2 18.Ke5!! Kc3! 19.Kd6!!
Bb7! 20.Bd5!! Ba6! 21.c6!! Kb4! 22.Be4 Ka5!
23.Kc5!! Bc8 24.Bd3!! Be6 25.c7! Bg4 26.Bc4!
Bd7! 27.Kd6! Bc8! 28.Kc6! Kb4! 29.Bb5 Ka5!
30.Bd3 Ka4 31.Kb6! Be6 32.Ba6 Bf5 33.Bb7 Be6
34.Ka7! Kb4 35.Kb8! Kc5! 36.Bc8! Bc4! 37.Bd7
Ba6! 38.Bf5 Kd5 39.Bc8! Bb5 40.Bb7+! Ke5
41.c8=Q! Kd4! 42.Ba6 Bxa6! 43.Qxa6! Ke4
44.Qe2+! Kf4 45.Kc8 Kf5 46.Kd7! Kg5 47.Qe4 Kh5
48.Qg2 Kh6 49.Ke6! Kh7 50.Kf6 Kh8 51.Qg7#!
KRPKR:
[D] k7/8/8/8/8/4R3/6P1/1K5r w - - 0 1
(out of 33 mate in 74 positions)
1.Kc2 {EGTB} 1...Kb8 2.Kd3!! Kc7! 3.Ke4!! Kd6!
4.Kf5!! Rh5+! 5.Kf6 Rh6+! 6.Kg7! Rh5! 7.Re2!
Rf5 8.Kh6!! Rf6+ 9.Kg5!! Rf8! 10.Ra2! Rc8
11.Kf6!! Rg8! 12.Ra6+! Kd7 13.Ra7+! Kd6!
14.Ra2!! Kd7! 15.Kf7! Rg5 16.Rd2+! Kc7! 17.Kf6
Rg8! 18.Kf5 Rf8+! 19.Kg5 Rg8+! 20.Kf4! Rf8+!
21.Ke3! Rg8 22.Kf2! Rf8+! 23.Kg1! Rg8! 24.Rd3!
Re8 25.Kf2! Rf8+! 26.Ke3! Rg8! 27.Kf3! Rf8+!
28.Ke4! Re8+! 29.Kf5! Rf8+! 30.Ke6! Rg8! 31.g3!
Rg5! 32.Re3 Kc8! 33.Kf6! Rg8! 34.Kf5! Rf8+
35.Kg5! Rg8+ 36.Kf6! Rg4 37.Re8+ Kc7 38.Re7+!
Kd8! 39.Rg7! Re4! 40.g4! Rf4+! 41.Ke6 Re4+!
42.Kf7 Rf4+ 43.Kg8!! Re4 44.g5! Rg4! 45.g6 Rg3
46.Kh8 Rg4 47.Rg8+! Kd7 48.Kg7! Rg3 49.Rh8 Ke6!
50.Rh2 Rg4 51.Re2+! Kd6! 52.Kh7 Rh4+! 53.Kg8!
Rh5 54.g7! Rh3 55.Re4! Rg3 56.Kh7 Rh3+!
57.Kg6!! Rc3 58.Rg4 Rc8! 59.Kf6! Rg8 60.Rg5!
Re8 61.g8=Q! Rxg8! 62.Rxg8!! Kc5! 63.Rd8 Kc6
64.Rd4 Kc5 65.Ke5! Kc6! 66.Rd5! Kc7! 67.Rd6!
Kc8 68.Ke6! Kc7! 69.Ke7! Kc8 70.Rd7! Kb8
71.Kd8! Ka8 72.Kc7! Ka7 73.Rd6! Ka8 74.Ra6#!
KQPKQ:
[D] 4Q3/8/7q/8/8/8/k3P3/2K5 w - - 0 1
(out of 5 mate in 124 positions)
1.Kc2 {EGTB} 1...Qh7+! 2.Kc3!! Qc7+! 3.Kd4!!
Qb6+! 4.Kd5!! Qb3+! 5.Ke4!! Qd1! 6.e3!! Qe2!
7.Kf4! Qf2+ 8.Kg5!! Qg2+ 9.Kf6! Qf2+! 10.Kg7!
Qb2+! 11.Kh7! Qb7+! 12.Kh6! Qb6+! 13.Kg5!! Kb3!
14.Kf5!! Qc5+! 15.Kf6!! Kc2! 16.Qe4+!! Kc1!
17.Kf7!! Qh5+! 18.Ke7! Qc5+! 19.Kd7!! Qa7+!
20.Ke8! Qb8+! 21.Kf7! Qc7+! 22.Qe7!! Qc4+!
23.Qe6!! Qc7+! 24.Kf6!! Qc3+! 25.Qe5! Qc6+
26.Ke7! Qb7+! 27.Kd8! Qa8+! 28.Kd7! Qa4+!
29.Ke7! Qb4+ 30.Ke6! Qc4+! 31.Qd5! Qc8+! 32.Ke7
Qc7+! 33.Kf6!! Qc3+! 34.Qd4!! Qc8! 35.Kf7 Qc7+
36.Kg6! Qc6+! 37.Kg5 Qg2+! 38.Kf5 Qf1+! 39.Ke4!
Qg2+! 40.Ke5! Qg5+! 41.Ke6!! Qg8+! 42.Kd7!
Qf7+! 43.Kd8 Qf8+ 44.Kc7! Qf7+! 45.Kb6! Qb3+!
46.Kc6! Qe6+! 47.Kc5! Qc8+! 48.Kb4! Qb7+!
49.Kc3! Qc6+! 50.Qc4! Qf3! 51.Kd4+! Kd2!
52.Qd3+! Ke1! 53.e4! Qf6+! 54.Kc5! Qe7+!
55.Kb6! Qe6+! 56.Ka5! Qe5+ 57.Qd5! Qc3+ 58.Kb5!
Qb2+! 59.Kc6! Qh8! 60.Qf5! Qe8+! 61.Kc5! Qe7+!
62.Kc4! Qc7+! 63.Qc5! Qf4! 64.Qd4! Qf7+! 65.Qd5
Qf1+! 66.Kb4! Qf3 67.Ka4! Ke2! 68.Qc4+!! Kd2!
69.Qd4+! Ke2! 70.e5! Qc6+! 71.Kb4 Qb7+! 72.Kc4!
Qc6+! 73.Qc5! Qa4+! 74.Kd5! Qd7+! 75.Qd6! Qb5+!
76.Ke6! Qb3+! 77.Qd5! Qb6+! 78.Kf7 Qa7+!
79.Kg6! Qg1+! 80.Kh6! Qe3+! 81.Kh5! Qh3+!
82.Kg6! Qg4+! 83.Kf6! Qh4+! 84.Kf7! Qh5+
85.Ke7! Qg5+! 86.Kd7! Qf5+! 87.Kd8 Qg5+ 88.Kc7!
Qf4! 89.Kb7 Qb4+! 90.Ka6! Qa4+ 91.Kb6! Qf4!
92.e6! Qb8+! 93.Ka6 Qc8+! 94.Kb5! Qb8+! 95.Kc4!
Qf4+! 96.Qd4! Qf5! 97.Qd6! Qg4+ 98.Kc5 Qf5+!
99.Kc6 Qc2+! 100.Kb6 Qb2+ 101.Kc7! Qc2+
102.Kd8! Qc3 103.e7! Qa5+! 104.Kd7! Qa4+!
105.Qc6! Qa7+! 106.Ke6! Qe3+! 107.Kf7! Qa7!
108.Qd6! Qb7! 109.Qf4! Qa7! 110.Qe5+! Kd1!
111.Ke6! Qa4! 112.Qh5+! Kd2 113.e8=Q! Qe4+
114.Qe5 Qg4+! 115.Kd5! Qf3+! 116.Kc4! Qd3+
117.Kb4! Qb1+! 118.Ka5! Qa2+! 119.Qa4! Qxa4+!
120.Kxa4!! Kd3 121.Kb3! Kd2 122.Qe4! Kd1!
123.Kc3! Kc1 124.Qe1# {1001}
Regards,
Dieter
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