3 new hard positions from George Tsavdaris

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AdminX
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Re: 3 new hard positions from George Tsavdaris

Post by AdminX »

Paloma wrote: ↑Tue May 08, 2018 1:56 pm How can i insert comfortably Diagrams?

[d]r1b1qr1k/2p3pp/ ..... seems not work. :shock:
Try this for now. http://www.fen-to-image.com/
"Good decisions come from experience, and experience comes from bad decisions."
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Ted Summers
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Paloma
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Re: 3 new hard positions from George Tsavdaris

Post by Paloma »

Thanks Ted
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Eelco de Groot
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Full name:   Eelco de Groot

Re: 3 new hard positions from George Tsavdaris

Post by Eelco de Groot »

AdminX wrote: ↑Tue May 08, 2018 10:58 am Image

Leela solves problem 1

Code: Select all


Engine: Lc0 GPU Chess Engine (0 MB)
by The LCZero Authors.
Found 510 wdl tablebases
Found 510 dtz tablebases
Engine: LCZero v0.8 GPU (0 MB)
by The LCZero Authors
  7/41	 0:00 	-1.92 	1.a3 Nd5 (2) 0
  7.00	 0:00 	-1.92 	1.a3 Nd5 (2) 0
  8.00	 0:00 	-2.24 	1.a3 Nd5 2.Nxd5 exd5 (5) 0
 10.00	 0:00 	-1.86 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 (10) 0
 10.00	 0:00 	-1.97 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Qc6 (13) 0
 10.00	 0:00 	-1.77 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Qc6 4.Rhd1 (16) 0
 11.00	 0:00 	-1.88 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Qc6 4.Rhd1 (19) 0
 11.00	 0:00 	-1.83 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Qc6 4.Rhd1 h6 (25) 0
 12.00	 0:00 	-2.12 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Qc6 4.Rhd1 h6 5.e6 (34) 0
 12.00	 0:00 	-2.22 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Qc6 4.Rhd1 h6 5.e6 hxg5 (40) 0
 12.00	 0:00 	-2.43 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Be7 4.e6 b4 5.axb4 a3 6.bxa3 (55) 0
 14.00	 0:00 	-2.39 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Be7 4.e6 b4 5.Nf7+ Kg8 6.Re1 bxa3 (112) 0
 14.00	 0:00 	-2.39 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Be7 4.e6 b4 5.Nf7+ Kg8 6.Re1 bxa3 7.bxa3 (145) 0
 15.00	 0:00 	-2.50 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Be7 4.e6 b4 5.Nf7+ Kg8 6.axb4 a3 7.bxa3 (182) 0
 15.00	 0:00 	-2.59 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Be7 4.e6 b4 5.Nf7+ Kg8 6.axb4 a3 7.bxa3 Qc6 (204) 0
 15.00	 0:00 	-2.57 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Be7 4.e6 b4 5.Nf7+ Kg8 6.axb4 a3 7.bxa3 Qc6 (228) 0
 16.00	 0:00 	-2.52 	1.Qf3 Ra6 2.h5 a3 3.Ng6+ Kg8 4.Nxf8 Bxf8 5.h6 axb2+ (357) 0
 17.00	 0:00 	-2.80 	1.Qf3 Ra6 2.a3 Nd5 3.Nxd5 exd5 4.Qxd5 Bxf2 5.e6 Bxe6 6.Qf3 Bc5 7.Rhe1 (704) 0
 18.00	 0:01 	-2.95 	1.Qf3 Rb8 2.a3 Nd5 3.Nxd5 exd5 4.Qxd5 Bxf2 5.e6 h6 6.Nf7+ Kg8 7.Qxf5 Bxe6 8.Nxh6+ gxh6 (1.424) 0
 19.00	 0:02 	-3.11 	1.Qf3 Ra6 2.a3 Nd5 3.Nxd5 exd5 4.Qxd5 Bxf2 5.e6 Bxe6 6.Qf3 Bc5 7.Rhe1 h6 8.Nxe6 Rxe6 9.Rxe6 Qxe6 (2.455) 0
 19.00	 0:03 	-3.16 	1.Qf3 Ra6 2.a3 Nd5 3.Nxd5 exd5 4.Qxd5 Bxf2 5.e6 Bxe6 6.Qf3 Bc5 7.Rhe1 h6 8.Nxe6 Rxe6 9.Rxe6 Qxe6 (3.252) 0
 20.00	 0:04 	-3.22 	1.Qf3 Ra6 2.a3 Nd5 3.Nxd5 exd5 4.Qxd5 Bxf2 5.e6 Bxe6 6.Qf3 Bc5 7.Rhe1 h6 8.Nxe6 Rxe6 9.Rxe6 Qxe6 (3.801) 0
 20.00	 0:05 	-3.33 	1.Qf3 Ra6 2.h5 a3 3.bxa3 Nd5 4.Ng6+ Kg8 5.Rxd5 Bxa3+ 6.Kb1 exd5 7.Qxd5+ Be6 8.Nxe6 Rxe6 9.Nxf8 Kxf8 (5.054) 0
 20.00	 0:06 	-3.42 	1.Qf3 Ra6 2.h5 a3 3.bxa3 Nd5 4.Ng6+ Kg8 5.Rxd5 Bxa3+ 6.Kb1 exd5 7.Qxd5+ Be6 8.Nxe6 Rxe6 9.Nxf8 Kxf8 10.f4 (6.142) 0
 21.00	 0:07 	-3.44 	1.Qf3 Ra6 2.h5 a3 3.bxa3 Nd5 4.Ng6+ Kg8 5.Rxd5 Bxa3+ 6.Kb1 exd5 7.Qxd5+ Be6 8.Nxe6 Rxe6 9.Nxf8 Kxf8 10.f4 (6.323) 0
 22.00	 0:15 	-3.55 	1.Kb1 a3 2.b3 Nd5 3.Nxd5 exd5 4.Rxd5 Qc6 5.Rd3 h6 6.e6 Be7 7.Nf7+ Kh7 8.Ng5+ Kg8 9.Qh5 Bxe6 10.Re1 (13.772) 0
 22.00	 0:15 	-3.55 	1.Kb1 a3 2.b3 Nd5 3.Nxd5 exd5 4.Rxd5 Qc6 5.Rd3 h6 6.e6 Be7 7.Nf7+ Kh7 8.Ng5+ Kg8 9.Qh5 Bxe6 10.Re1 (13.940) 0
 23.00	 0:26 	-3.34 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Be7 4.e6 b4 5.Qd3 Qg6 6.Re1 bxa3 7.bxa3 Rb8 8.Nf7+ Kg8 9.h5 Qf6 10.Rxf5 Qa1+ 11.Kd2 Rb1 12.Rxb1 Qxb1 13.Nh6+ gxh6 14.Rxf8+ (24.434) 0
 23.00	 0:26 	-3.34 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Be7 4.e6 b4 5.Qd3 Qg6 6.Re1 bxa3 7.bxa3 Rb8 8.Nf7+ Kg8 9.h5 Qf6 10.Rxf5 Qa1+ 11.Kd2 Rb1 12.Rxb1 Qxb1 13.Nh6+ gxh6 14.Rxf8+ (24.446) 0
 23.00	 0:26 	-3.33 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Be7 4.e6 b4 5.Qd3 Qg6 6.Re1 bxa3 7.bxa3 Rb8 8.Nf7+ Kg8 9.h5 Qf6 10.Rxf5 Qa1+ 11.Kd2 Rb1 12.Rxb1 Qxb1 13.Nh6+ gxh6 14.Rxf8+ (24.490) 0
 23.00	 0:26 	-3.32 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Be7 4.e6 b4 5.Qd3 Qg6 6.Re1 bxa3 7.bxa3 Rb8 8.Nf7+ Kg8 9.h5 Qf6 10.Rxf5 Qa1+ 11.Kd2 Rb1 12.Rxb1 Qxb1 13.Nh6+ gxh6 14.Rxf8+ (24.630) 0
 23.00	 0:26 	-3.06 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Be7 4.e6 b4 5.Qd3 Qg6 6.Re1 bxa3 7.bxa3 Rb8 8.Nf7+ Kg8 9.h5 Qf6 10.Rxf5 Qa1+ 11.Kd2 Rb1 12.Rxb1 Qxb1 13.Nh6+ gxh6 14.Rxf8+ (25.598) 0
 23.00	 0:26 	-3.05 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Be7 4.e6 b4 5.Qd3 Qg6 6.Re1 bxa3 7.bxa3 Rb8 8.Nf7+ Kg8 9.h5 Qf6 10.Rxf5 Qa1+ 11.Kd2 Rb1 12.Rxb1 Qxb1 13.Nh6+ gxh6 14.Rxf8+ (25.626) 0
 23.00	 0:27 	-3.01 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Be7 4.e6 b4 5.Qd3 Qg6 6.Re1 bxa3 7.bxa3 Rb8 8.Nf7+ Kg8 9.h5 Qf6 10.Rxf5 Qa1+ 11.Kd2 Rb1 12.Rxb1 Qxb1 13.Nh6+ gxh6 14.Rxf8+ (25.754) 0
 23.00	 0:27 	-2.98 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Be7 4.e6 b4 5.Qd3 Qg6 6.Re1 bxa3 7.bxa3 Rb8 8.Nf7+ Kg8 9.h5 Qf6 10.Rxf5 Qa1+ 11.Kd2 Rb1 12.Rxb1 Qxb1 13.Nh6+ gxh6 14.Rxf8+ (25.922) 0
 23.00	 0:27 	-2.97 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Be7 4.e6 b4 5.Qd3 Qg6 6.Re1 bxa3 7.bxa3 Rb8 8.Nf7+ Kg8 9.h5 Qf6 10.Rxf5 Qa1+ 11.Kd2 Rb1 12.Rxb1 Qxb1 13.Nh6+ gxh6 14.Rxf8+ (25.949) 0
 23.00	 0:27 	-2.88 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Be7 4.e6 b4 5.Qd3 Qg6 6.Re1 bxa3 7.bxa3 Rb8 8.Nf7+ Kg8 9.h5 Qf6 10.Rxf5 Qa1+ 11.Kd2 Rb1 12.Rxb1 Qxb1 13.Nh6+ gxh6 14.Rxf8+ (26.238) 0
 23.00	 0:27 	-2.83 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Be7 4.e6 b4 5.Qd3 Qg6 6.Re1 bxa3 7.bxa3 Rb8 8.Nf7+ Kg8 9.h5 Qf6 10.Rxf5 Qa1+ 11.Kd2 Rb1 12.Rxb1 Qxb1 13.Nh6+ gxh6 14.Rxf8+ (26.420) 0
 23.00	 0:27 	-2.81 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Be7 4.e6 b4 5.Qd3 Qg6 6.Re1 bxa3 7.bxa3 Rb8 8.Nf7+ Kg8 9.h5 Qf6 10.Rxf5 Qa1+ 11.Kd2 Rb1 12.Rxb1 Qxb1 13.Nh6+ gxh6 14.Rxf8+ (26.480) 0
 23.00	 0:28 	-2.47 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Be7 4.e6 b4 5.Qd3 Qg6 6.Re1 bxa3 7.bxa3 Rb8 8.Nf7+ Kg8 9.h5 Qf6 10.Rxf5 Qa1+ 11.Kd2 Rb1 12.Rxb1 Qxb1 13.Nh6+ gxh6 14.Rxf8+ (28.601) 1
 23.00	 0:28 	-2.40 	1.a3 Nd5 2.Nxd5 exd5 3.Rxd5 Be7 4.e6 b4 5.Qd3 Qg6 6.Re1 bxa3 7.bxa3 Rb8 8.Nf7+ Kg8 9.h5 Qf6 10.Rxf5 Qa1+ 11.Kd2 Rb1 12.Rxb1 Qxb1 13.Nh6+ gxh6 14.Rxf8+ (29.095) 1
 23.00	 0:29 	-2.19 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 Nc3+ 9.bxc3 Bf8 10.Qh5 gxf6 11.Qh8+ Kf7 12.Rh7+ Ke8 13.Rxd7 Kxd7 14.Qxf8 (30.426) 1
 23.00	 0:30 	-1.73 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 Nc3+ 9.bxc3 Bf8 10.Qh5 gxf6 11.Qh8+ Kf7 12.Rh7+ Ke8 13.Rxd7 Kxd7 14.Qxf8 (33.984) 1
 23.00	 0:30 	-1.73 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 Nc3+ 9.bxc3 Bf8 10.Qh5 gxf6 11.Qh8+ Kf7 12.Rh7+ Ke8 13.Rxd7 Kxd7 14.Qxf8 (33.995) 1
 23.00	 0:31 	-1.70 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.Qh8+ Kf7 11.fxg7 Nc3+ 12.bxc3 Bb7 13.g6+ Ke6 14.g8B+ (34.792) 1
 23.00	 0:31 	-1.68 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.Qh8+ Kf7 11.fxg7 Nc3+ 12.bxc3 Bb7 13.g6+ Ke6 14.g8B+ (35.189) 1
 23.00	 0:31 	-1.68 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.Qh8+ Kf7 11.fxg7 Bb7 12.g6+ Ke6 13.g8Q+ Rxg8 14.Qxg8+ (35.250) 1
 23.00	 0:31 	-1.68 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.Qh8+ Kf7 11.fxg7 Bb7 12.g6+ Ke6 13.g8Q+ Rxg8 14.Qxg8+ (35.257) 1
 23.00	 0:40 	-1.03 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.Qh8+ Kf7 11.fxg7 Nc3+ 12.bxc3 Bb7 13.g6+ Ke6 14.g8B+ (44.463) 1
 23.00	 0:44 	-0.77 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (48.865) 1
 24.00	 0:44 	-0.76 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (49.144) 1
 24.00	 0:46 	-0.59 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (51.974) 1
 24.00	 0:48 	-0.45 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (55.185) 1
 24.00	 0:48 	-0.45 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (55.301) 1
 24.00	 0:48 	-0.45 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (55.354) 1
 24.00	 0:49 	-0.38 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (56.684) 1
 24.00	 0:49 	-0.38 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (56.733) 1
 24.00	 1:01 	-0.07 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (70.841) 1
 24.00	 1:04 	-0.03 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (73.408) 1
 24.00	 1:06 	+0.04 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (77.364) 1  TB:1
 24.00	 1:06 	+0.04 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (77.410) 1  TB:1
 24.00	 1:07 	+0.04 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (77.579) 1  TB:2
 24.00	 1:07 	+0.06 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (78.554) 1  TB:2
 24.00	 1:08 	+0.06 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (78.715) 1  TB:2
 24.00	 1:09 	+0.09 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (80.201) 1  TB:2
 25.00	 1:40 	+0.68 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (128.988) 1  TB:6
 25.00	 1:40 	+0.68 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (129.036) 1  TB:6
 25.00	 1:41 	+0.69 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (129.667) 1  TB:6
 25.00	 1:48 	+0.77 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (139.682) 1  TB:6
 25.00	 2:10 	+1.00 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (177.608) 1  TB:14
 25.00	 2:10 	+1.00 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (177.722) 1  TB:14
 25.00	 2:11 	+1.01 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (179.022) 1  TB:14
 25.00	 2:12 	+1.02 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (180.401) 1  TB:14
 26.00	 3:03 	+1.25 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (254.353) 1  TB:17
 26.00	 3:15 	+1.30 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (271.414) 1  TB:20
 26.00	 3:15 	+1.30 	1.Rd8 Qxd8 2.Qh5 h6 3.Qg6 hxg5 4.hxg5+ Kg8 5.Nh5 Nxa2+ 6.Kb1 Qd7 7.Nf6+ Rxf6 8.exf6 e5 9.Qh7+ Kf8 10.g6 gxf6 11.Qh8+ Ke7 12.Rh7+ Kd6 13.Rxd7+ Kxd7 14.g7 (271.519) 1  TB:20
However the potential capture throws her off position number 2

Image
Nice Ted!

Kaissa can find it at depth 36, but not all search versions find it so there is some luck involved, Kaissa search not robust against this problem No. 1.


r1b1qr1k/2p3pp/4p3/1pb1PpN1/pn3N1P/8/PPP1QPP1/2KR3R w - -

Engine: Kaissa III (one thread, i7 6700, 512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott

19/29 0:01 -3.95 1.a3 Nd5 2.Qf3 Ra6 3.Ngxe6 Rxe6
4.Rxd5 Rxe5 5.Nd3 Rxd5 6.Qxd5 Bb6
7.Re1 Qd7 8.Qxd7 Bxd7 9.Re7 Bc6 (2.784.473) 1799
.
.
.
35/56 11:51 -5.00 1.c3 Nd5 2.Nxd5 exd5 3.Rxd5 Be7 4.e6 b4
5.c4 Ra6 6.Re1 Kg8 7.f4 b3 8.a3 Bb7
9.Re5 Rd6 10.Rc5 Rc6 11.Rxc6 Qxc6
12.Rd1 Qxg2 13.Qxg2 Bxg2 14.Rg1 (1.346.629.891) 1891

36/47 12:38 -5.07-- 1.c3 Nd5 (1.439.204.463) 1897

36/47 13:29 -5.15-- 1.c3 Nd5 (1.540.247.256) 1902

36/47 15:22 -5.07++ 1.Kb1 (1.757.037.924) 1904

36/47 15:38 -4.91++ 1.Rd8 (1.789.019.831) 1906

36/47 15:39 -4.70++ 1.Rd8 (1.790.144.050) 1906

36/47 15:39 -4.40++ 1.Rd8 (1.791.398.998) 1906

36/47 15:40 -4.02++ 1.Rd8 (1.793.022.215) 1906

36/47 15:42 -3.52++ 1.Rd8 (1.797.484.487) 1906

36/47 15:44 -2.87++ 1.Rd8 (1.801.496.110) 1907

36/47 15:46 -2.05++ 1.Rd8 (1.806.039.136) 1907

36/47 15:51 -1.00++ 1.Rd8 (1.814.819.929) 1908

36/47 15:58 +0.32++ 1.Rd8 (1.832.162.186) 1910

36/53 16:16 +2.01++ 1.Rd8 (1.873.102.308) 1918

36/59 16:41 +4.14++ 1.Rd8 (1.931.184.095) 1927

36/64 17:45 +6.82++ 1.Rd8 (2.084.296.669) 1955

36/64 19:23 +8.15 1.Rd8 Nxa2+ 2.Kb1 Nc1 3.Qd1 Nd3
4.Rxe8 Nxf4 5.Rxf8+ Bxf8 6.Qf3 Ra6
7.Qxf4 Be7 8.Qf3 g6 9.Qd3 c6 10.Nf7+ Kg8
11.Nd6 Bd7 12.Nxb5 cxb5 13.Qxd7 Kf7
14.Qxb5 (2.332.693.474) 2004
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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peter
Posts: 3391
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: 3 new hard positions from George Tsavdaris

Post by peter »

Vinvin wrote: ↑Tue May 08, 2018 10:19 am
Yes, I forgot to mention the position is difficult only for Stockfish

Houdini 1.5 finds the mate on depth=10
Houdini 6.03 Tactical solves all the three of them at once.
Peter.
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