2b1r3/r2ppN2/8/1p1p1k2/pP1P4/2P3R1/PP3PP1/2K5 w - - pv Rf3+ Ke6 Nh6 Rh8 Ng4 d6 a3 Ra8 Kd2 Bb7 Re3+ Kd7 Ke2 Rhg8 f3 Raf8 Rd3 Kc6 Ne3 Bc8 Kf2 Rg7 Rd1 Rh8 Kg1 Rgg8 Kf2 Rh4 Rd2 Bd7 Rd1 Ra8 Kg3 Rah8 Kf2 Rh1 Rd2 Ra8 Ke2 Rf8 Kf2 Rhh8 Rd1 e6 Ke2 Rh7 Kf2 Re8 Kg3 Reh8 Kf2 Rh1 Rd2 Rg8;
2b1r3/r2ppN2/8/1p1p1k2/pP1P4/2P3R1/PP3PP1/2K5 w - - pv Nh6+ Kf6 Ng4+ Ke6 Re3+ Kf5 Rg3 d6 Ne3+ Ke6 Rh3 Rf8 f3 Bb7 Rh1 Raa8 Re1 Rh8 Kc2 Kf7 a3 Rag8 Rf1 Rh4 Kd1 e6 Ke2 Bc6 Ng4 Be8 Rg1 Bd7 Rd1 Rh5 Ne3 Rgh8 Kf2 Rh4 Rd2 Bc6 Ng4 Rh1 Ke3 Rg8 Re2 Bd7 Kd2 Rh7 Ne3 Rh4 Kd3 Rh1 Kd2 Bc6 Ng4 Rh4 Kd3 Ke7 Rd2 Be8 Ne3 Rh1 Ke2 Rgh8 Kf2 Bg6;
2b1r3/r2ppN2/8/1p1p1k2/pP1P4/2P3R1/PP3PP1/2K5 w - - pv Nd6+ exd6 Rf3+ Ke6 Re3+ Kf7 Rf3+ Ke7 Re3+ Kd8 Rxe8+ Kxe8 a3 Rc7 Kd2 Bb7 Ke3 Rc4 f3 Rc8;
Although I agree that Nd6+ is the most obviously correct and the only one that is a lock to be a draw (the others had repeated scores for many iterations but took a very long time and the cycles are quite deep).
Sting 10 is the only engine I tried that nailed this problem quickly.
Code: Select all
1
Avoid move:
Best move (Sting10): Nf7-d6
Not found in: 57:00
16 00:00 1,952,190 2,833,367 -3.75 Re3 Ra6 Rf3+ Ke6 g4 Rg8 Nh6 Rg6 Re3+ Kf6 Rf3+ Kg5 Nf7+ Kh4 g5 a3 bxa3 d6 Rf4+ Bg4
17- 00:00 2,691,811 3,424,695 -3.83 Re3 Ra6
17- 00:00 3,130,387 3,717,799 -3.91 Re3 Ra6
17 00:00 3,746,075 4,054,193 -3.83 Nh6+ Kf6 Ng4+ Ke6 Ne3 d6 Rg6+ Kf7 Rh6 Kg7 Rh4 e6 f3 Rg8 Kd2 Kf6 g4
18- 00:01 4,593,448 4,485,789 -3.95 Nh6+ Kf6
18 00:01 6,123,821 5,146,068 -4.04 Nh6+ Kf6 Ng4+ Ke6 Ne3 d6 Kd2 Rh8 f4 Bd7 f5+ Kf7 Rg5 Bc6 Rg6 Raa8 Rg5 a3 b3
19 00:01 9,545,895 6,239,147 -4.08 Nh6+ Kf6 Ng4+ Ke6 Ne3 d6 Rg6+ Kf7 Rh6 Kg7 Rh4 Be6 f4 Rf8 Kc2 Raa8 Kd3 a3 b3 Kg6 g3 Rac8 Rh1
20+ 00:01 14,566,417 7,334,550 -3.95 Rf3+
20+ 00:02 14,973,577 7,383,420 -3.83 Rf3+ Ke6 Nh6 a3 g4 axb2+ Kb1 d6 g5 Rh8 Re3+ Kd7 g6 Rxh6 g7 Rg6 Rg3 Rxg3 fxg3 Ke6 g8Q+ Kf6 Qxc8 Kg5 Kxb2 Kf6 g4 Kg5 Kb1 Kf6
20 00:02 16,012,435 7,382,404 -3.83 Rf3+ Ke6 g4 a3 Nh6 axb2+
21- 00:02 19,891,704 7,749,008 -3.95 Rf3+ Ke6
21- 00:02 22,914,630 7,839,421 -4.08 Rf3+ Ke6 g4 Rg8
21 00:03 26,305,926 8,081,697 -4.00 Re3 Ra6 Rf3+ Ke6 g4 Rg8 Nh6 Rg6 Re3+ Kf6 Rg3 Rg7 Nf5 Rh7 Rf3 Kg6 Ne3 Bb7 Kd2 a3 b3 e6
22- 00:03 32,342,345 8,471,017 -4.12 Re3 Ra6
22 00:04 42,775,419 8,950,704 -4.08 Nh6+ Kf6 Ng4+ Ke6 Ne5 d6 Nd3 Kd7 Rg7 Bb7 Nf4 Rf8 g3 Raa8 Kd2 a3 b3 Rg8 Rf7 Raf8 Rxf8 Rxf8
23- 00:05 47,389,533 9,052,441 -4.20 Nh6+ Kf6
23+ 00:06 56,988,666 9,336,282 -3.95 Nh6+ Kf6 Ng4+ Ke6 Ne3 d6 Rg6+ Kf7 Rh6 Kg7 Rh1 Be6 Kd2 Rf8 f3 Raa8 Rf1 Rh8 f4 a3 b3 Kf7 f5 Rh1 Rxh1 Rh8 Rxh8
23 00:06 60,184,066 9,279,072 -4.20 Nh6+ Kf6 Ng4+ Ke6 Ne3 d6 Rg6+ Kf7 Rh6 Kg7 Rh1 Rf8 f3 Be6 Kd2
24 00:07 69,509,668 9,528,398 -4.20 Nh6+ Kf6 Ng4+ Ke6 Ne3 d6 Rg6+ Kf7 Rh6 Kg7 Rh1
25 00:09 94,618,131 9,855,028 -4.24 Nh6+ Kf6 Ng4+ Ke6 Ne3 d6 Rg6+ Kf7 Rh6 Kg7 Rh1 Rf8 f3 Be6 Rf1 a3 b3 Rc7 Kd2 Rfc8 Rc1 Kf6 f4 Bf7 Ng4+ Kg6 Ne3 e6 g4 Kf6 g5+ Kg6 Ng4 Rh8 Re1
26+ 00:13 132,837,021 10,117,061 -4.16 Re3
26 00:15 156,156,872 10,231,073 -4.28 Re3 Ra6 Rf3+ Ke6 Ne5 Rg8 Nd3 Kd6 g3 a3 b3 Ra8 Ne5 Bb7 Kd2 Rg7 Rf5 Rh8 g4 Ke6 Rh5 Rxh5 gxh5 Rg2 Ke3 Rh2 Ng6 Rh3+ Kd2
27+ 00:21 234,085,203 10,669,334 -4.20 Rf3+
27+ 00:22 237,154,902 10,656,252 -4.12 Rf3+
27 00:25 268,171,450 10,705,874 -4.28 Nh6+
28- 00:35 383,054,985 10,851,108 -4.36 Nh6+ Kf6
28 00:42 465,117,177 10,845,431 -4.36 Nh6+ Kf6 Ng4+ Ke6 Ne3 d6 Rh3 Rf8 f3 Bb7 Rh1 Raa8 Rf1 Kf6 f4 Rh8 Kd2
29+ 00:56 625,817,743 11,059,977 -4.28 Re3
29 01:05 728,722,904 11,108,411 -4.36 Nh6+
30 01:22 917,495,924 11,149,949 -4.40 Re3 Ra6 Rf3+ Ke6 Ne5 Rg8 Nd3 Kd6 Nf4 a3 b3 Rg4 Kd2 Bb7 g3 Ra8 Nd3 Rg7 Re3 Rh8 Ne5 Rh1 Re2 Ra1 Kd3 Rd1+ Kc2 Rf1 Kd3 Rg8 g4
31+ 01:25 949,662,508 11,129,683 -4.32 Re3
31 01:42 1,148,565,019 11,182,819 -4.32 Nd6+ exd6 Rf3+ Ke6 Re3+ Kf7 Rf3+ Ke7 Re3+ Kd8 Rxe8+ Kxe8 a3 Rc7 Kd2 Ke7 f3 Ba6 Ke3 Rc8 Kf2 Kf6 g3 Rg8 Kg2 Re8 Kf1 Kg6 Kf2 Kf5 Kf1 Bb7 Kf2 Rh8 Kg2 Kg5 Kg1 Kf6 Kg2
32 02:00 1,350,406,345 11,211,809 -4.32 Nd6+ exd6 Rf3+ Ke6 Re3+ Kf7 Rf3+ Ke7 Re3+ Kd8 Rxe8+ Kxe8 a3 Rc7 Kd2 Ke7 f3 Ba6 Ke3 Rc8 Kf2
33 02:15 1,528,156,630 11,246,782 -4.32 Nd6+ exd6 Rf3+ Ke6 Re3+ Kf7 Rf3+ Ke7 Re3+ Kd8 Rxe8+ Kxe8 a3 Rc7 Kd2 Ke7 f3 Ba6 Ke3 Rc8 Kf2 Kf6 g3 Rg8 Kg2 Re8 Kf1
34 02:46 1,881,495,708 11,326,805 -4.32 Nd6+ exd6 Rf3+ Ke6 Re3+ Kf7 Rf3+ Ke7 Re3+ Kd8 Rxe8+ Kxe8 a3 Rc7 Kd2 Ke7 f3 Ba6 Ke3 Kf6 g3 Ke7 Kf2 Rc8 Kg2 Rh8 Kg1 Rb8 Kf1 Re8 Kg1 Kf6 Kf2 Rg8 Kg2 Bc8 Kf2 Bb7 Kg2 Rb8
35 03:17 2,253,668,667 11,390,276 -4.32 Nd6+ exd6 Rf3+ Ke6 Re3+ Kf7 Rf3+ Ke7 Re3+ Kd8 Rxe8+ Kxe8 a3 Rc7 Kd2 Ke7 f3 Ba6 Ke3 Kf6 g3 Ke7 Kf2 Rc8 Kg2 Rh8 Kg1 Ke6 Kg2 Rc8
36 04:23 3,032,664,140 11,489,409 -4.32 Nd6+ exd6 Rf3+ Ke6 Re3+ Kf7 Rf3+ Ke7 Re3+ Kd8 Rxe8+ Kxe8 a3 Rc7 Kd2 Ke7 f3 Ba6 Ke3 Kf6 g3 Ke7 Kf2 Rc8 Kg2 Rh8 Kg1 Kf6 Kg2 Rg8 Kf2 Bb7 Kg2 Rg7 Kf2 Re7 Kf1 Kf5 Kf2 Ba6 Kf1 Re8 Kf2 Rg8
37 05:34 3,859,993,009 11,527,081 -4.32 Nd6+ exd6 Rf3+ Ke6 Re3+ Kf7 Rf3+ Ke7 Re3+ Kd8 Rxe8+ Kxe8 a3 Rc7 Kd2 Ke7 f3 Ba6 Ke3 Kf6 g3 Ke7 Kf2 Rc8 Kg2 Rh8 Kg1 Kf6 Kg2 Rg8 Kf2 Kg5 Kf1 Rh8 Kg2 Bb7 Kg1 Bc8 Kg2 Ba6 Kg1 Kh6
38 06:56 4,822,181,825 11,583,095 -4.32 Nd6+ exd6 Rf3+ Ke6 Re3+ Kf7 Rf3+ Ke7 Re3+ Kd8 Rxe8+ Kxe8 a3 Rc7 Kd2 Bb7 Ke3 Rc4 f3 Rc8 Kf2 Ke7 Kf1 Rf8 Kf2 Rg8 g3 Rc8 Kg2 Kf6 Kf2 Kf5 Kf1 Rf8 Kg1 Rh8
39 11:17 7,890,340,843 11,653,087 -4.32 Nd6+ exd6 Rf3+ Ke6 Re3+ Kf7 Rf3+ Ke7 Re3+ Kd8 Rxe8+ Kxe8 a3 Rc7 Kd2 Bb7 Ke3 Rc4 f3 Rc8 Kf2 Ke7 Kf1 Rf8 Kf2 Rg8 g3 Rh8 Kg2 Kf6 Kg1 Ke7
40 15:04 10,583,454,890 11,700,411 -4.32 Nd6+ exd6 Rf3+ Ke6 Re3+ Kf7 Rf3+ Ke7 Re3+ Kd8 Rxe8+ Kxe8 a3 Rc7 Kd2 Bb7 Ke3 Rc4 f3 Rc8 Kf2 Ke7 Kf1 Rf8 Kf2 Rg8 g3 Rh8 Kg2 Kf7 Kg1 Re8 Kf2 Kf6 Kf1 Kf5 Kf2 Rg8 Kg2 Rh8 Kg1 Kg5 Kg2 Kg6 Kg1 Kf5
41 20:51 14,712,164,807 11,752,451 -4.32 Nd6+ exd6 Rf3+ Ke6 Re3+ Kf7 Rf3+ Ke7 Re3+ Kd8 Rxe8+ Kxe8 a3 Rc7 Kd2 Bb7 Ke3 Rc4 f3 Rc8
42 26:10 18,544,883,686 11,810,365 -4.32 Nd6+ exd6 Rf3+ Ke6 Re3+ Kf7 Rf3+ Ke7 Re3+ Kd8 Rxe8+ Kxe8 a3 Rc7 Kd2 Bb7 Ke3 Rc4 f3 Rc8 Kf2 Ra8 g3 Ke7 Kg1 Kf6 Kf1 Rc8 Kf2 Rh8 Kg1 Kf5 Kg2 Rg8 Kf2 Ra8 Kg1 Rc8 Kf2 Re8 Kf1 Kg5 Kf2 Kg6 Kf1 Rh8 Kg1 Kg5 Kg2 Kf5 Kg1
43 38:55 27,739,237,966 11,875,156 -4.32 Nd6+ exd6 Rf3+ Ke6 Re3+ Kf7 Rf3+ Ke7 Re3+ Kd8 Rxe8+ Kxe8 a3 Rc7 Kd2 Bb7 Ke3 Rc4 f3 Rc8 Kf2 Ra8 g3 Ke7 Kg2 Kf6 Kf2 Rh8 Kg2 Rg8 Kf2 Kf7
2018-10-19 7:50:25 AM, Time for this analysis: 00:57:00, Rated time: 57:00