Godzilla Endgame Chess Puzzles (1)

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Glarean
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Godzilla Endgame Chess Puzzles (1)

Post by Glarean » Sun Oct 01, 2017 6:09 am

.

There's a new collection of extremely difficult chess end games:

The Godzilla Endgame Chess Puzzles (GECP)

The first four monster chess positions can be found here:
https://glarean-magazin.ch/2017/09/30/s ... s-puzzles/
(in german; try "Translate" right below)

After a few months or years there will be dozens of them...

Start your engines, gentlemen!

Greeting: Walter

.

peter
Posts: 1786
Joined: Sat Feb 16, 2008 6:38 am
Full name: Peter Martan

Re: Godzilla Endgame Chess Puzzles (1)

Post by peter » Sun Oct 01, 2017 7:24 am

Glarean wrote:.

There's a new collection of extremely difficult chess end games:

The Godzilla Endgame Chess Puzzles (GECP)

The first four monster chess positions can be found here:
https://glarean-magazin.ch/2017/09/30/s ... s-puzzles/
(in german; try "Translate" right below)

After a few months or years there will be dozens of them...

Start your engines, gentlemen!

Greeting: Walter

.
Thanks a lot, Walter!

To start with nr.2, the Ryabinin- study, that's a typical light bulb moment for the engines to be shown the solution
:)
Peter.

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Houdini
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Re: Godzilla Endgame Chess Puzzles (1)

Post by Houdini » Sun Oct 01, 2017 10:34 am

No.2 is very nice, it takes a while to understand why removing pawn g6 is not a good idea :).

Houdini 6 finds them all, but for no.2 Tactical Mode was needed.

Waschbaer
Posts: 68
Joined: Mon Dec 12, 2011 10:27 pm

Re: Godzilla Endgame Chess Puzzles (1)

Post by Waschbaer » Sun Oct 01, 2017 11:13 am

Houdini 6.01
Ryzen 7 1800X 3950 MHz
64 GByte RAM
16 Thread
32 GByte hashtable (large page)
6men syzygy
contempt = 0 (analyze)

GECP02:

Code: Select all

 [+11.40]  d=36  1.Nc6(0:14:02) 27954614kN
 [+8.89]  d=36  1.Nc6(0:11:52) 23612957kN
 [+6.90]  d=36  1.Nc6(0:09:18) 18499346kN
 [+5.32]  d=36  1.Nc6(0:05:41) 11235287kN
 [+4.07]  d=36  1.Nc6(0:03:16) 6510674kN
 [+3.08]  d=36  1.Nc6(0:01:55) 3810277kN
 [+2.31]  d=36  1.Nc6(0:01:20) 2662661kN
 [+1.70]  d=36  1.Nc6(0:00:54) 1797538kN
 [+1.23]  d=36  1.Nc6(0:00:43) 1436658kN
 [+0.87]  d=36  1.Nc6(0:00:29) 950780kN
 [+0.60]  d=36  1.Nc6(0:00:26) 876972kN
 [+0.39]  d=36  1.Nc6(0:00:25) 815353kN
 [+0.24]  d=36  1.Nc6(0:00:24) 794379kN
 [+0.14]  d=36  1.Nc6(0:00:24) 794349kN
 [+0.07]  d=36  1.Nc6(0:00:24) 794253kN
 [+0.00]  d=36  1.Nxg6 Kg8 2.e7 Re2 3.Nde5 Rxe5 4.Nxe5 f1Q 5.e8R Qf8 6.Rxf8 Kxf8 7.Bxd6 Kg8 8.Ke7 Bxe5 9.Bxe5 a3 10.Kf6 a2 11.Kxg5(0:00:24) 794160kN
 [+0.00]  d=35  1.Nxg6 Kg8 2.e7 Re2 3.Nde5 Rxe5 4.Nxe5 f1Q 5.e8R Qf8 6.Rxf8 Kxf8 7.Bxd6 Kg8 8.Ke7 Bxe5 9.Bxe5 a3 10.Kf6 a2 11.Kxg5(0:00:10) 345319kN
 [+0.00]  d=34  1.Nxg6 Kg8 2.e7 Re2 3.Nde5 Rxe5 4.Nxe5 f1Q 5.e8R Qf8 6.Rxf8 Kxf8 7.Bxd6 Kg8 8.Ke7 Bxe5 9.Bxe5 a3 10.Kf6 a2 11.Kxg5(0:00:09) 307378kN
 [+0.00]  d=33  1.Nxg6 Kg8 2.e7 Re2 3.Nde5 Rxe5 4.Nxe5 f1Q 5.e8R Qf8 6.Rxf8 Kxf8 7.Bxd6 Kg8 8.Ke7 Bxe5 9.Bxe5 a3 10.Kf6 a2 11.Kxg5(0:00:05) 188273kN
 [+0.00]  d=32  1.Nxg6 Kg8 2.e7 Re2 3.Nde5 Rxe5 4.Nxe5 f1Q 5.e8R Qf8 6.Rxf8 Kxf8 7.Bxd6 Kg8 8.Ke7 Bxe5 9.Bxe5 a3 10.Kf6 a2 11.Kxg5(0:00:05) 185383kN
This result is not alway reproducible, but sometimes

Glarean
Posts: 169
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Re: Godzilla Endgame Chess Puzzles (1)

Post by Glarean » Sun Oct 01, 2017 11:14 am

Houdini wrote: Houdini 6 finds them all, but for no.2 Tactical Mode was needed.
Yeah, Houdini is a monster too... :-)

Can you give us your exact outputs?

Thx: Walter

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Houdini
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Re: Godzilla Endgame Chess Puzzles (1)

Post by Houdini » Sun Oct 01, 2017 11:27 am

AMD Ryzen 1700 @ 3.7GHz, 16 threads, 8192 MB of large page hash

[D]Nn6/8/6r1/8/K7/1P6/1R6/3k2N1 w - - 0 1

Code: Select all

 13/34	00:00,602	 2 618k	4 349k	+1,02	1.b4 Kc1 2.Ra2 Kb1 3.Rf2 Rxg1 4.b5 Nd7 5.Ka5 Ne5 6.Nb6 Rg8 7.Rf5
 13/35	00:00,737	 3 375k	4 578k	+1,25	1.Nh3 Ra6+ 2.Kb5 Rxa8 3.Nf2+ Ke1 4.Nd3+ Kd1 5.Nc5 Ra3 6.b4 Rg3 7.Kc4 Kc1 8.Rf2 Rg4+ 9.Kc3 Rg3+ 10.Nd3+ Kb1 11.b5 Nd7 12.Kd4 Rg4+ 13.Kd5
 14/42	00:01,918	 11 223k	5 851k	+2,36	1.Ka3 Na6 2.Nf3 Rd6 3.Ne5 Kc1 4.Nc4 Rd3 5.Nab6 Nc5 6.Na5 Kd1 7.Na4 Na6
 15/42	00:03,159	 25 155k	7 962k	+2,56	1.Ka3 Nd7 2.Nc7 Ne5 3.Ra2 Rd6 4.Re2 Nd3 5.Rh2 Nc1 6.Nh3 Rc6 7.Nb5 Rc8 8.Nf4 Ra8+ 9.Kb4
 16/42	00:03,381	 27 001k	7 985k	+2,60	1.Ka3 Nd7 2.Nc7 Ne5 3.Ra2 Rd6 4.Re2 Nd3 5.Rh2 Nc1 6.Nh3 Rc6 7.Nb5 Rc8 8.Nf4 Ra8+ 9.Kb4
 17/44	00:08,285	 114 122k	13 774k	+2,82	1.Ka3 Rc6 2.Rh2 Nd7 3.Nf3 Rd6 4.Kb4 Nf6 5.Nc7 Rd3 6.Ne5 Rd8 7.Nb5 Nd5+ 8.Kc5 Nf4 9.Kc6 Rb8
 18/44	00:09,510	 145 763k	15 327k	+2,78	1.Ka3 Rc6 2.Rh2 Nd7 3.Nf3 Rd6 4.Kb4 Nf6 5.Nc7 Rd3 6.Ne5 Rd8 7.Nb5 Ke1 8.Nc3 Kf1 9.Nf3 Rc8 10.Ra2
 19/47	00:26,673	 658 562k	24 690k	+3,19	1.Ka3 Nd7 2.Nc7 Ne5 3.Ra2 Rd6 4.b4 Nc4+ 5.Ka4 Rd7 6.Nb5 Nd2 7.Nc3+ Ke1 8.b5 Rd4+ 9.Ka5 Nc4+ 10.Ka6 Rd6+ 11.Kb7 Rd7+ 12.Kc6 Ne5+ 13.Kb6 Nc4+ 14.Kc5 Rc7+ 15.Kd4
 20/51	00:44,057	 1 195 807k	27 142k	+3,43	1.Ka3 Nd7 2.Nc7 Ne5 3.Ra2 Rg8 4.Ne2 Nd3 5.Nc3+ Ke1 6.Re2+ Kf1 7.Rd2 Ne5 8.Rd1+ Kg2 9.b4 Ng4 10.Rd2+ Kg3 11.b5 Ne5 12.Kb3 Nf3 13.Rd3
 21/52	01:04,590	 1 838 698k	28 467k	+3,69	1.Ka3 Nd7 2.Nc7 Ne5 3.Ra2 Rg8 4.Ne2 Nd3 5.Nc3+ Ke1 6.b4 Rc8 7.N3d5 Rg8 8.b5 Rg3 9.Ra1+ Kf2 10.b6 Rf3 11.Nc3 Nc5 12.Kb4 Nb7
 22/63	03:34,005	 6 532 239k	30 523k	+3,74	1.Ka3 Nd7 2.Nc7 Ne5 3.Nh3 Rg3 4.Nf2+ Ke1 5.Ne4 Rg8 6.Nc3 Kf1 7.Re2 Nc6 8.b4 Nd4 9.Rd2 Nf3 10.Rd1+ Kf2 11.b5 Ne5 12.Kb3 Kf3 13.N7d5
 23/63	04:33,442	 8 409 921k	30 755k	+3,83	1.Ka3 Nd7 2.Nc7 Ne5 3.Nh3 Rf6 4.Nf2+ Ke1 5.Ne4 Rf8 6.Nc3 Kf1 7.Re2 Nf3 8.b4 Nd4 9.Re4 Nf3 10.b5 Rb8 11.N7d5 Kg2 12.Kb4 Rc8 13.b6 Kg3
 24/66	08:09,020	 15 174 828k	31 031k	+4,07	1.Ka3 Nd7 2.Nc7 Ne5 3.Nh3 Rg3 4.Nf2+ Ke1 5.Ne4 Rg4 6.Rb1+ Ke2 7.Nd5 Rg8 8.b4 Ra8+ 9.Kb3 Rb8 10.Ndc3+ Kf3 11.Rf1+ Kg2 12.Rf2+ Kh3 13.Nd5 Nc6 14.Rd2 Na5+ 15.Kc3 Nb7 16.b5 Kg4 17.Rf2 Kh5 18.b6 Rc8+ 19.Kb4
 25/68	10:00,189	 18 669 495k	31 106k	+4,14	1.Ka3 Nd7 2.Nc7 Ne5 3.Nh3 Rg3 4.Nf2+ Ke1 5.Ne4 Rg4 6.Rb1+ Ke2 7.Nd5 Rg8 8.b4 Ra8+ 9.Kb3 Rb8 10.Ndc3+ Kf3 11.Rf1+ Kg4 12.Nd5 Nc6 13.Kc4 Na7 14.Ne3+ Kh5 15.Rf5+ Kg6 16.Rf6+ Kh5 17.Rf7 Nc6 18.Rf5+
 26/68	10:53,371	 20 341 101k	31 132k	+4,08	1.Ka3 Nd7 2.Nc7 Ne5 3.Nh3 Rf6 4.Nf2+ Ke1 5.Ne4 Rf8 6.Nc3 Kf1 7.Re2 Nd3 8.Rd2 Nf2 9.b4 Ng4 10.N7d5 Kg1 11.Re2 Nh6 12.b5 Nf5 13.b6 Rh8 14.Rd2 Kf1
[D]1B1K1k2/4N2p/3pP1pP/6p1/p7/3N2b1/2r2p2/8 w - - 0 1

Code: Select all

 21/43	00:01,230	 32 257k	26 225k	 0,00	1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5 4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8 7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5 10.Ke6 Bf4 11.Bc5
 22/43	00:01,388	 36 569k	26 346k	 0,00	1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5 4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8 7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5 10.Ke6 Bf4 11.Kf5 g4
 23/45	00:02,059	 55 425k	26 918k	 0,00	1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5 4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8 7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5 10.Ke6 Bf4 11.Kf5 g4 12.Kxf4
 24/51	00:02,826	 76 761k	27 162k	 0,00	1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5 4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8 7.Bxd6+ Kg8 8.Ke7 Bxe5 9.Bxe5 a3 10.Kf6 g4 11.Kf5 a2 12.Kxg4
 25/51	00:03,534	 96 958k	27 435k	 0,00	1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5 4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8 7.Bxd6+ Kg8 8.Ke7 Bxe5 9.Bxe5 a3 10.Kf6 a2 11.Kf5 Kf7 12.Kxg5
 26/51	00:04,192	 116 214k	27 722k	 0,00	1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5 4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8 7.Bxd6+ Kg8 8.Ke7 Bxe5 9.Bxe5 a3 10.Kf6 a2 11.Kf5 Kf7 12.Kxg5
 27/51	00:04,212	 116 824k	27 735k	 0,00	1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5 4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8 7.Bxd6+ Kg8 8.Ke7 Bxe5 9.Bxe5 a3 10.Kf6 a2 11.Kf5 Kf7 12.Kxg5
 28/59	00:05,545	 153 766k	27 730k	 0,00	1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5 4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8 7.Bxd6+ Kg8 8.Ke7 Bxe5 9.Bxe5 a3 10.Kf6 a2 11.Kf5 Kf7 12.Kxg5
 29/59	00:07,107	 196 825k	27 694k	 0,00	1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5 4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8 7.Bxd6+ Kg8 8.Ke7 Bxe5 9.Bxe5 a3 10.Kf6 a2 11.Kf5 Kf7 12.Kxg5
 30/59	00:09,096	 253 238k	27 840k	 0,00	1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5 4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8 7.Bxd6+ Kg8 8.Ke7 Bxe5 9.Bxe5 a3 10.Kf6 a2 11.Kf5 Kf7 12.Kxg5
 31/62	00:10,416	 291 370k	27 973k	 0,00	1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5 4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8 7.Bxd6+ Kg8 8.Ke7 Bxe5 9.Bxe5 a3 10.Kf6 a2 11.Kf5 Kf7 12.Kxg5
 32/62	00:14,171	 393 483k	27 766k	 0,00	1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5 4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8 7.Bxd6+ Kg8 8.Ke7 Bxe5 9.Bxe5 a3 10.Kf6 a2 11.Kf5 Kf7 12.Kxg5
 33/69	00:19,108	 522 970k	27 369k	 0,00	1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5 4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8 7.Bxd6+ Kg8 8.Ke7 Bxe5 9.Bxe5 a3 10.Kf6 a2 11.Kf5 Kf7 12.Kxg5
 34/69	00:22,205	 609 611k	27 453k	 0,00	1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5 4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8 7.Bxd6+ Kg8 8.Ke7 Bxe5 9.Bxe5 a3 10.Kf6 a2 11.Kf5 Kf7 12.Kxg5
 35/73	00:32,167	 878 322k	27 305k	 0,00	1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5 4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8 7.Bxd6+ Kg8 8.Ke7 Bxe5 9.Bxe5 a3 10.Kf6 a2 11.Kf5 Kf7 12.Kxg5
 35/73+	00:34,451	 942 451k	27 356k	+0,07	1.Nc6
 35/73	02:54,473	 4 807 036k	27 551k	+3,08	1.Nc6
stopping and restarting the analysis to produce a PV:

Code: Select all

 19/47	00:01,470	 47 602k	32 382k	+5,72	1.Nc6 Re2 2.Nde5 Rxe5 3.Nxe5 dxe5 4.e7+ Kf7 5.e8Q+ Kf6 6.Qf8+ Ke6 7.Ba7 f1R 8.Qxf1 g4 9.Qd3 Bf4 10.Qd7+ Kf6 11.Qxh7 Bg5 12.Kd7 Bxh6 13.Qxh6 Kf7 14.Qh4
 20/48	00:04,403	 132 809k	30 163k	+6,58	1.Nc6 Re2 2.Nde5 Rxe5 3.Nxe5 dxe5 4.e7+ Kf7 5.e8Q+ Kf6 6.Qf8+ Ke6 7.Ba7 a3 8.Bxf2 a2 9.Qg8+ Kf6 10.Qxa2 Bh4 11.Kd7 Kf5 12.Qf7+ Kg4 13.Bc5 Kh5 14.Qxh7
 21/55	00:09,557	 278 726k	29 164k	+8,15	1.Nc6 Re2 2.Nde5 Rxe5 3.Nxe5 dxe5 4.e7+ Kf7 5.e8Q+ Kf6 6.Qf8+ Ke6 7.Ba7 f1R 8.Qxf1 g4 9.Qa6+ Kf5 10.Qd3+ Kf4 11.Qe3+ Kf5 12.Qxg3 g5 13.Qd3+ e4 14.Qd5+ Kf4 15.Qf7+ Ke5 16.Qxh7 g3 17.Qc7+ Kf5 18.h7
 22/66	00:17,755	 525 720k	29 609k	+9,06	1.Nc6 Re2 2.Nde5 Rxe5 3.Nxe5 dxe5 4.e7+ Kf7 5.e8Q+ Kf6 6.Qe7+ Kf5 7.Qxh7 Kg4 8.Qd7+ Kf3 9.Qd3+ Kg2 10.Qe4+ Kf1 11.Ba7 Bh4 12.h7 g4+ 13.Kd7 Bf6 14.Qc4+ Kg2 15.Qxg4+ Kf1 16.Qh3+ Ke2 17.Qe3+ Kd1 18.Qf3+ Kd2
 23/89	00:36,546	 1 082 801k	29 628k	+148,74	1.Nc6 Re2 2.Nde5 Rxe5 3.Nxe5 dxe5 4.Bd6+ Kg8 5.e7 Kf7 6.e8Q+ Kf6 7.Qd7 e4 8.Bxg3 f1Q 9.Qe7+ Kf5 10.Qf7+ Kg4 11.Qxf1 a3 12.Qe2+ Kh3 13.Be5 Kh4 14.Qxe4+ g4 15.Qh1+ Kg5 16.Qc1+
[D]k3K3/P3N3/8/ppp4p/4p1p1/6R1/rn1PP2B/8 w - - 0 1

Code: Select all

 13/32	00:00,185	 5 048k	27 288k	-0,62	1.Kd7 b4 2.Kc6 Nd1 3.Rg1 Rxd2 4.Bb8 Ne3 5.Nc8 Nd5 6.Nd6 Ne7+ 7.Kb5 Rxe2 8.Nc4 Nc8
 14/33	00:00,571	 15 655k	27 416k	-0,17	1.Kd7 b4 2.Kc6 Nd1 3.Nd5 Kxa7 4.Bg1 e3 5.Nxe3 Rxd2 6.Nd5 Kb8 7.Bxc5 Kc8 8.Nf4
 15/39	00:01,027	 28 038k	27 301k	 0,00	1.Kd7 Nc4 2.Kc6 b4 3.Kb5 Rc2 4.Rg2 Kxa7 5.Rf2 Kb7 6.Rf8 Na3+ 7.Kxa5 Nc4+ 8.Kb5
 16/39	00:01,095	 29 916k	27 320k	 0,00	1.Kd7 Nc4 2.Kc6 b4 3.Kb5 Rc2 4.Rg1 Kxa7 5.Rf1 Na3+ 6.Kxa5 h4 7.Rf7 Nc4+ 8.Kb5 Na3+
 17/39	00:02,068	 56 447k	27 295k	 0,00	1.Kd7 Kxa7 2.Kc6 Nc4 3.Kxb5 Nxd2 4.Nc6+ Kb7 5.Nxa5+ Kc8 6.Bg1 Kd7 7.Bxc5 Rb2+ 8.Ka6 Ra2 9.Kb5
 18/42	00:04,182	 114 283k	27 327k	+0,11	1.Kd7 Kxa7 2.Kc6 Nc4 3.Kxb5 Nxd2 4.Rc3 Rb2+ 5.Kxc5 Ka6 6.Kd5 a4 7.Nf5 Rb5+ 8.Ke6 Nb3 9.Bd6 Ra5 10.e3 Ka7 11.Rc2 Kb7 12.Rh2 Nc5+ 13.Kd5
 19/44	00:08,999	 247 326k	27 483k	 0,00	1.Kd7 Kxa7 2.Kc6 Nc4 3.Kxb5 Nxd2 4.Nc6+ Kb7 5.Nxa5+ Kc8 6.Rc3 h4 7.Rxc5+ Kd7 8.Rd5+ Ke6 9.Rd6+ Kf7 10.Rd7+
 20/47	00:10,604	 291 573k	27 496k	 0,00	1.Kd7 Kxa7 2.Kc6 Nc4 3.Kxb5 Nxd2 4.Nc6+ Kb7 5.Nxa5+ Kc8 6.Rc3 h4 7.Rxc5+ Kd7 8.Rc7+ Ke6 9.Rc6+ Kf5 10.Rc5+ Kg6 11.Rc6+ Kg5
 21/47	00:11,751	 323 427k	27 523k	 0,00	1.Kd7 Kxa7 2.Kc6 Nc4 3.Kxb5 Nxd2 4.Nc6+ Kb7 5.Nxa5+ Kc8 6.Rc3 h4 7.Rxc5+ Kd7 8.Rc7+ Ke6 9.Rc6+ Kf5 10.Rc5+ Kg6 11.Rc6+ Kg5
 22/47	00:14,131	 388 988k	27 527k	 0,00	1.Kd7 Kxa7 2.Kc6 Nc4 3.Kxb5 Nxd2 4.Nc6+ Kb7 5.Nxa5+ Kc8 6.Rc3 h4 7.Rxc5+ Kd7 8.Rc7+ Ke6 9.Rc6+ Kf5 10.Rc5+ Kg6 11.Rc6+ Kg5
 23/47	00:16,007	 438 589k	27 399k	 0,00	1.Kd7 Kxa7 2.Kc6 Nc4 3.Kxb5 Nxd2 4.Nc6+ Kb7 5.Nxa5+ Kc8 6.Rc3 h4 7.Rxc5+ Kd7 8.Rc7+ Ke6 9.Rc6+ Kf5 10.Rc5+ Kg6 11.Rc6+ Kg5 12.Rc5+
 23/49	00:29,080	 795 251k	27 347k	+0,50	1.Rb3 Kxa7 2.Rxb5 Ka6 3.Rxc5 e3 4.dxe3 h4 5.Rc6+ Kb5 6.Bf4 g3 7.Rg6 Nc4 8.Nf5 a4 9.Nxh4 Rxe2 10.Nf5 Kb4 11.Rxg3 a3 12.Rg1 a2 13.Ke7 Kc3 14.Ke6
 24/63	01:03,848	 1 737 502k	27 213k	+0,68	1.Rb3 Kxa7 2.Rxb5 Ka6 3.Rxc5 h4 4.Bf4 g3 5.Nd5 Na4 6.Rc6+ Kb7 7.Rg6 Ra1 8.Kd7 Rc1 9.Rg7 Rc6 10.Be3 Nb2 11.Ke8+ Ka6 12.Nc3 Rxc3 13.dxc3 a4 14.Bd4 a3 15.Ra7+ Kb5 16.Rxa3 Kc4 17.Ra2 Kb3 18.Ra1 Kc4
 25/63	01:44,901	 2 834 080k	27 016k	+0,87	1.Rb3 Kxa7 2.Rxb5 Ka6 3.Rxc5 h4 4.Bf4 g3 5.Nd5 Na4 6.Rc6+ Kb7 7.Rg6 Ra1 8.Ke7 Rc1 9.Rg4 Nb6 10.Nxb6 Kxb6 11.Rxh4 g2 12.Rg4 a4 13.Rxg2 a3 14.Ke6 Rd1 15.e3 a2 16.Be5 Kc6 17.Rg4
 26/63	02:05,848	 3 387 786k	26 919k	+0,71	1.Rb3 Kxa7 2.Rxb5 Ka6 3.Rxc5 h4 4.Bf4 g3 5.Nd5 Na4 6.Rc6+ Kb7 7.Rg6 Rc2 8.Rg7+ Kc6 9.Ne7+ Kb5 10.Nf5 Kb4 11.Nxh4 Nc5 12.Bxg3 a4 13.Be1 Rc1 14.Bf2 a3 15.Ra7 Rc2 16.Nf5 a2
 27/63	03:30,903	 5 623 966k	26 666k	+3,52	1.Ra3 g3 2.Rxa2 gxh2 3.Rxa5 Nc4 4.Ra1 Nb6 5.Rh1 Kxa7 6.Rxh2 h4 7.Rxh4 Ka6 8.Rh5 c4 9.Nc6 Na4 10.Nb4+ Ka5 11.Nd5 Nc5 12.Nc3 Kb6 13.Rh6+ Ka5 14.Rc6 Nb3 15.Nxe4 Nd4 16.Rc5 Kb4 17.e3 Nf3 18.Rc7 Kb3 19.Kd7 Kc2 20.Kc6
 28/63	03:58,620	 6 315 805k	26 468k	+3,79	1.Ra3 g3 2.Rxa2 gxh2 3.Rxa5 Nc4 4.Ra1 Nb6 5.Rh1 Kxa7 6.Rxh2 h4 7.Rxh4 Kb7 8.Rh5 Na4 9.Re5 b4 10.Rxe4 Nb6 11.Re5 Na4 12.Rh5 b3 13.Rh4 b2 14.Rh1 Kb6 15.e4
 29/63	04:40,952	 7 417 904k	26 402k	+4,01	1.Ra3 g3 2.Rxa2 gxh2 3.Rxa5 Nc4 4.Ra1 Nb6 5.Rh1 Kxa7 6.Rxh2 Ka6 7.Rxh5 c4 8.Nc6 Na4 9.Kd7 e3 10.dxe3 Kb6 11.Nd4 Nc3 12.Kd6 Ne4+ 13.Ke5 Nc3 14.Rh6+ Ka5 15.Rc6 Kb4 16.e4 Ka4 17.Kf4 Kb4 18.Rc8 Ka4 19.e5

[D]7k/3q4/1p3P2/3pP1N1/7N/6p1/1P4P1/3n1KBn w - - 0 1

Code: Select all

 13/36	00:00,162	 965k	5 955k	 0,00	1.Ng6+ Kg8 2.f7+ Qxf7+ 3.Nxf7 Kxf7 4.Nf4 Nhf2 5.Ke2 d4 6.Bxf2 gxf2 7.b3 Ke7 8.e6 Kf6 9.g4 Ne3 10.Kxf2 Nxg4+ 11.Kf3 d3
 14/36	00:00,183	 1 086k	5 937k	 0,00	1.Ng6+ Kg8 2.f7+ Qxf7+ 3.Nxf7 Kxf7 4.Nf4 Nhf2 5.Ke2 Nxb2 6.Bxf2 gxf2 7.Kxf2 Nc4
 15/36	00:00,322	 2 070k	6 429k	+0,30	1.Ng6+ Kg8 2.f7+ Qxf7+ 3.Nxf7 Kxf7 4.Nf4 Nhf2 5.b3 d4 6.Ke1 b5 7.Ne2 Ne3 8.Nxg3 Nfg4 9.Ne2 Nxg2+ 10.Kd2 Nxe5 11.Nxd4 Nf4 12.Bh2 Nfd3 13.Bg3
 16/42	00:00,409	 2 826k	6 910k	+0,33	1.Ng6+ Kg8 2.f7+ Qxf7+ 3.Nxf7 Kxf7 4.Nf4 Nhf2 5.b3 d4 6.Ke1 b5 7.Nh5 Ne3 8.Nxg3 Nfg4 9.Ne2 Nxg2+ 10.Kd2 Nxe5 11.Nxd4 Nf4 12.Bh2
 17/45	00:00,692	 5 154k	7 447k	+0,28	1.Ng6+ Kg8 2.f7+ Qxf7+ 3.Nxf7 Kxf7 4.Nf4 Nhf2 5.b3 d4 6.Ke1 Ke7 7.Ne2 Ne3 8.Bxf2 gxf2+ 9.Kxf2 Ng4+ 10.Ke1 Ke6 11.Nxd4+ Kxe5 12.Nc2 Ke4 13.Kd2 Ne5 14.Kc3 Nc6 15.Kc4 Na5+ 16.Kb4 Kf4 17.Kc3 Kg3
 18/45	00:01,354	 16 200k	11 964k	+0,18	1.Ng6+ Kg8 2.f7+ Qxf7+ 3.Nxf7 Kxf7 4.Nf4 Nhf2 5.b3 Ke7 6.Ke2 d4 7.Ke1 Kd7 8.Ne2 Ne3 9.Bxf2 gxf2+ 10.Kxf2 Ng4+ 11.Ke1 Ke6 12.Nxd4+ Kxe5 13.Nc2 Ke4 14.Kd2 Nf6 15.Ne3 Kd4 16.Nf5+ Ke5 17.Ng3 Kd4 18.Kc2
 19/47	00:01,504	 18 689k	12 426k	+0,16	1.Ng6+ Kg8 2.f7+ Qxf7+ 3.Nxf7 Kxf7 4.Nf4 Nhf2 5.b3 Ke7 6.Ke2 d4 7.Ke1 Kd7 8.Ne2 Ne3 9.Bxf2 gxf2+ 10.Kxf2 Ng4+ 11.Ke1 Ke6 12.Nxd4+ Kxe5 13.Nc2 Ke4 14.Kd2 Nf6 15.Ne3 Kd4 16.Nf5+ Ke5 17.Ng3 Kd4 18.Nf1 Ne4+ 19.Kc2 Nf6 20.Nh2 Nd5 21.Ng4
 20/53	00:01,866	 24 851k	13 317k	+0,16	1.Ng6+ Kg8 2.f7+ Qxf7+ 3.Nxf7 Kxf7 4.Nf4 Nhf2 5.b3 Ke7 6.Ke2 d4 7.Ke1 Kd7 8.Ne2 Ne3 9.Bxf2 gxf2+ 10.Kxf2 Ng4+ 11.Kf3 Nxe5+ 12.Ke4 d3 13.Nc3 Ke6 14.Ke3 Kd6 15.Ne4+ Kd5 16.Nf2 d2 17.Kxd2 Kd4 18.Kc2 Ke3 19.Nd1+
 21/53	00:02,156	 29 364k	13 619k	+0,14	1.Ng6+ Kg8 2.f7+ Qxf7+ 3.Nxf7 Kxf7 4.Nf4 Nhf2 5.b3 Ke7 6.Ke1 d4 7.Ne2 Ne3 8.Bxf2 gxf2+ 9.Kxf2 Ng4+ 10.Kg3 d3 11.Nc3 Nxe5 12.Kf4 Kd6 13.Ne4+ Ke6 14.Ke3 Kd5 15.Nf2 d2 16.Ke2 Kd4 17.Kxd2
 22/53	00:04,368	 65 055k	14 893k	+0,18	1.Ng6+ Kg8 2.f7+ Qxf7+ 3.Nxf7 Kxf7 4.Nf4 Nhf2 5.b3 Ke7 6.Ke1 d4 7.Ne2 Ne3 8.Bxf2 gxf2+ 9.Kxf2 Ng4+ 10.Kf3 Nxe5+ 11.Ke4 d3 12.Nc3 Ng6 13.g3 Ke6 14.Kxd3 Kf5 15.Ke3 Kg4 16.Kf2 Ne5 17.Ne4 Nc6 18.Ke3 Ne7 19.Ke2
 23/84	00:21,884	 519 802k	23 752k	+2,93	1.Bd4 Qc7 2.Ng6+ Kg8 3.f7+ Qxf7+ 4.Nxf7 Kxf7 5.Nf4 Ke7 6.Nxd5+ Kd7 7.Nf4 b5 8.Ke2 Nhf2 9.Kf3 b4 10.Kxg3 Ne4+ 11.Kf3 Nd2+ 12.Ke2 Nb3 13.e6+ Ke7 14.Bg7 Nxb2 15.Bxb2 Kd6 16.Bf6
 24/84	00:25,641	 620 711k	24 207k	+2,90	1.Bd4 Qc7 2.Ng6+ Kg8 3.f7+ Qxf7+ 4.Nxf7 Kxf7 5.Nf4 Ke7 6.Nxd5+ Kd7 7.Nf4 Ndf2 8.Bxb6 Ne4 9.Ke2 Kc6 10.Bd4 Kd7 11.b4 Kc6 12.Kf3 Ng5+ 13.Ke3 Kb5 14.Bc5 Nf2 15.e6
 25/84	00:33,097	 825 104k	24 929k	+3,13	1.Bd4 Qc7 2.Ng6+ Kg8 3.f7+ Qxf7+ 4.Nxf7 Kxf7 5.Nf4 Ke7 6.Nxd5+ Kd7 7.Nf4 Ndf2 8.Bxb6 Ne4 9.Ke2 Nhf2 10.Kf3 Nd2+ 11.Kxg3 Nfe4+ 12.Kg4 Nc4 13.Bd4 Na5 14.e6+ Ke7 15.Bc5+ Nxc5 16.b4 Ke8 17.bxc5
 26/84	00:37,483	 948 219k	25 297k	+3,14	1.Bd4 Qc7 2.Ng6+ Kg8 3.f7+ Qxf7+ 4.Nxf7 Kxf7 5.Nf4 Ke7 6.Nxd5+ Kd7 7.Nf4 Ndf2 8.Bxb6 Ne4 9.Ke2 Nhf2 10.Kf3 Kc6 11.Bd4 Kd7 12.b4 Kc6 13.e6 Nd6 14.Kxg3 Nfe4+ 15.Kf3 Nd2+ 16.Ke3 Nf5+ 17.Kd3
 27/84	01:14,502	 1 974 812k	26 506k	+4,28	1.Bd4 Qc7 2.Ng6+ Kg8 3.f7+ Qxf7+ 4.Nxf7 Kxf7 5.Nf4 Ke7 6.Nxd5+ Kd7 7.Ke2 Ndf2 8.Bxb6 Ke6 9.Nf4+ Kf5 10.e6 Ne4 11.e7 Nd6 12.Nd5 Ke6 13.e8Q+ Nxe8 14.Nc7+ Kd7 15.Nxe8 Kc6 16.Be3 Kd5 17.Kf3 Kc4 18.Nd6+
 28/84	02:00,707	 3 326 716k	27 560k	+4,77	1.Bd4 Qc7 2.Ng6+ Kg8 3.f7+ Qxf7+ 4.Nxf7 Kxf7 5.Nf4 Ke7 6.Nxd5+ Kd7 7.Ke2 Ndf2 8.Bxb6 Ke6 9.Nf4+ Kf5 10.e6 Ne4 11.e7 Nd6 12.Nd5 Ke6 13.e8R+ Nxe8 14.Nc7+ Kd7 15.Nxe8 Kc6 16.Be3 Kb5 17.Kf1 Kc4 18.Kg1
 29/84	02:31,303	 4 204 617k	27 789k	+4,92	1.Bd4 Qc7 2.Ng6+ Kg8 3.f7+ Qxf7+ 4.Nxf7 Kxf7 5.Nf4 Ndf2 6.Kg1 Ne4 7.Kxh1 b5 8.Kg1 Ng5 9.Kf1 Ke8 10.Ke2 Kd7 11.Nxd5 Ne6 12.Be3 Kc6 13.Nb4+ Kd7 14.Kf3 Ng7 15.Kxg3 Ke6 16.Kf4 Nh5+ 17.Kg4 Ng7 18.Bd4 Nf5 19.Nc6
 30/84	03:26,833	 5 851 590k	28 291k	+5,28	1.Bd4 Qc7 2.Ng6+ Kg8 3.f7+ Qxf7+ 4.Nxf7 Kxf7 5.Nf4 Ndf2 6.Kg1 Ke7 7.Bxb6 Ng4 8.Kxh1 Nxe5 9.Nxd5+ Kd7 10.Bc7 Nf7 11.Kg1 Ke6 12.Bxg3 Kf5 13.Kf2 Ke4 14.Ke2 Kd4 15.b4 Nd8 16.Kf3 Kc4 17.Kf2 Kb5 18.Ke3
 31/84	03:39,090	 6 219 915k	28 389k	+5,28	1.Bd4 Qc7 2.Ng6+ Kg8 3.f7+ Qxf7+ 4.Nxf7 Kxf7 5.Nf4 Ndf2 6.Kg1 Ke7 7.Bxb6 Ng4 8.Kxh1 Nxe5 9.Nxd5+ Kd7 10.Bc7 Nf7 11.Kg1 Ke6 12.Bxg3 Kf5 13.Kf2 Ke4 14.Ke2 Kd4 15.b4 Nd8 16.b5 Ke4 17.Be5 Kf5 18.Kf2 Ke6 19.g4

Paloma
Posts: 859
Joined: Thu Dec 25, 2008 8:07 pm

Re: Godzilla Endgame Chess Puzzles (1)

Post by Paloma » Mon Oct 02, 2017 12:06 pm

Without tablebases?

I see no output.

I get for #1 with 5 men syzygy no solution:

3 core 3.7GHz, 4GB Hash

[d] Nn6/8/6r1/8/K7/1P6/1R6/3k2N1 w - - 0 1
Analysis by Houdini 6.01 x64-pext:

1.b4 Kc1 2.Ra2 Kb1 3.Rd2 Rxg1 4.b5 Rg4+ 5.Ka3 Rg3+ 6.Kb4 Rg4+ 7.Kc5 Rg5+ 8.Kb6 Rg7 9.Rd5 Nd7+ 10.Ka5 Kc2 11.Nc7 Kc3 12.Rd1 Kc4 13.Rc1+ Kb3 14.Ne6 Rg8 15.Nd4+ Kb2 16.Rc2+ Kb1 17.Rf2 Rb8 18.Rf1+ Kb2
+/- (1.28 ++) Depth: 23/63 00:00:10 82608kN, tb=945144
...
1.b4 Kc1 2.Ra2 Kb1 3.Rd2 Rxg1 4.b5 Rg4+ 5.Ka3 Rg3+ 6.Kb4 Rg4+ 7.Kc5 Rg5+ 8.Rd5 Nd7+ 9.Kd6 Rg7 10.Rd4 Kc2 11.Nc7 Nb6 12.Kc5 Nd7+ 13.Kb4 Ne5 14.Nd5 Nd3+ 15.Ka5 Ne5 16.Kb6 Kb3 17.Kc5 Nd7+ 18.Kc6 Ne5+ 19.Kd6 Nc4+ 20.Kc5 Nb2 21.Rb4+
+/- (0.80 --) Depth: 28/69 00:00:56 501MN, tb=6053561
1.Nf3
+/- (0.94 ++) Depth: 28/69 00:00:58 524MN, tb=6374620
...
1.Nf3 Ra6+ 2.Kb5 Rxa8 3.Rd2+ Kc1 4.Rd8 Ra5+ 5.Kb6 Ra6+ 6.Kb7 Ra3 7.b4 Na6 8.Rc8+ Kb2 9.b5 Nb4 10.Ne5 Rh3 11.Rc5 Rh7+ 12.Kb6 Kb3 13.Nc6 Nd3 14.Rg5 Ka4 15.Rg4+ Kb3 16.Rg3 Kc4 17.Rg5 Rh6 18.Rf5 Kc3 19.Ka5 Nb2 20.Ne5 Re6 21.Rf3+ Kd2 22.Nd7 Re4 23.Nb6 Nd3 24.Rf5 Re7 25.Nc8 Re5 26.Rf6 Kc3 27.Nb6 Kb3 28.Rf3 Kc3 29.Rg3 Rh5 30.Rg4
+/- (0.77) Depth: 38/95 00:18:07 10171MN, tb=116654091

switched between Nf3 and b4 :(

I tried several times

User avatar
Houdini
Posts: 1471
Joined: Mon Mar 15, 2010 11:00 pm
Contact:

Re: Godzilla Endgame Chess Puzzles (1)

Post by Houdini » Mon Oct 02, 2017 12:48 pm

With 6-men Syzygy.
I can confirm that even with 5-men Syzygy the solution is not easily found.

Looking at the variations, I think it's because of this kind of 6-men position:
[D]rn2R3/8/8/8/8/1PK5/8/6k1 w - - 0 6
Won for white, but you need a deep analysis to prove that without tablebases. The winning variation from this position is quite subtle, with the pawn providing coverage for the white King against rook checks.
Very pretty!

kgburcham
Posts: 2016
Joined: Sun Feb 17, 2008 3:19 pm

Re: Godzilla Endgame Chess Puzzles (1)

Post by kgburcham » Mon Oct 02, 2017 4:12 pm

[D] rn2R3/8/8/8/8/1PK5/8/6k1 w - -


Nalimov 6 men EGTB available - 999 MB cache
Engine: Houdini 6.01 Pro x64-pext (8192 MB)
by Robert Houdart
8 threads used


13/24 0:00 0.00 1.b4 Kg2 2.b5 Kf2 3.b6 Nd7 4.Rxa8 (122.802) 990 TB:3.142
14/24 0:00 0.00 1.b4 Kg2 2.b5 Kf2 3.b6 Nd7 4.Rxa8 (128.930) 999 TB:3.349
15/24 0:00 0.00 1.b4 Kg2 2.b5 Kf2 3.b6 Nd7 4.Rxa8 (144.096) 986 TB:3.789
16/24 0:00 0.00 1.b4 Kg2 2.b5 Kf2 3.b6 Nd7 4.Rxa8 (177.859) 1022 TB:4.792
17/29 0:00 0.00 1.b4 Kg2 2.b5 Kf3 3.Rd8 Ke4 4.b6 Ke5 5.b7 Ra3+ 6.Kb4 Ra1 7.Rxb8 (274.830) 1117 TB:7.664
18/29 0:00 0.00 1.b4 Kg2 2.b5 Kf3 3.Rd8 Ke4 4.b6 Ke5 5.b7 Ra3+ 6.Kb4 Ra1 7.Rxb8 (308.505) 1168 TB:8.326
19/31 0:00 0.00 1.b4 Kg2 2.b5 Kf3 3.Rd8 Ke4 4.b6 Ke5 5.b7 Ra3+ 6.Kb4 Ra1 7.Rxb8 (425.146) 1065 TB:10.692
20/31 0:00 0.00 1.b4 Kg2 2.b5 Kf3 3.Rd8 Ke4 4.b6 Ke5 5.b7 Ra3+ 6.Kb4 Ra1 7.Rxb8 (516.547) 1163 TB:13.122
21/31 0:00 0.00 1.b4 Kg2 2.b5 Kf3 3.Rd8 Ke4 4.b6 Ke5 5.b7 Ra3+ 6.Kb4 Ra1 7.Rxb8 (600.378) 1240 TB:15.027
22/31 0:00 0.00 1.b4 Kg2 2.b5 Kf3 3.Rd8 Ke4 4.b6 Ke5 5.b7 Ra3+ 6.Kb4 Ra1 7.Rxb8 (786.660) 1283 TB:20.288
23/33 0:00 0.00 1.b4 Kg2 2.b5 Kf3 3.Rd8 Ke4 4.b6 Ke5 5.b7 Ra3+ 6.Kb4 Ra1 7.Rxb8 (1.151.981) 1469 TB:29.972
24/33 0:00 0.00 1.b4 Kg2 2.b5 Kf3 3.Rd8 Ke4 4.b6 Ke5 5.b7 Ra3+ 6.Kb4 Ra1 7.Rxb8 (1.353.219) 1546 TB:37.128
25/38 0:01 0.00 1.b4 Kg2 2.b5 Kf3 3.Rd8 Ke4 4.b6 Ke5 5.b7 Ra3+ 6.Kb4 Ra1 7.Rxb8 (2.157.014) 1824 TB:60.288
26/38 0:01 0.00 1.b4 Kg2 2.b5 Kf3 3.Rd8 Ke4 4.b6 Ke5 5.b7 Ra3+ 6.Kb4 Ra1 7.Rxb8 (3.026.298) 1972 TB:84.901
26/44 0:02 +1.61 1.Rf8 Kg2 2.Kd3 Kg1 3.Ke3 Kg2 4.Rd8 Kg3 5.Rg8+ Kh4 6.Ke4 Kh5 7.b4 Kh6 8.Kd5 Kh7 9.Rd8 Kh6 10.b5 Kg7 11.Ke6 Kg6 12.Kd6 Kg7 13.Rc8 Kh6 14.Re8 (5.899.134) 2830 TB:135.384
27/55 0:02 +3.35 1.Rf8 Kh2 2.Rg8 Kh3 3.b4 Kh4 4.Kc4 Kh5 5.Kd5 Kh6 6.b5 Kh7 7.Rc8 Kg6 8.Kd6 Kf6 9.Rf8+ Kg6 10.Ke6 Kg7 11.Rd8 Kg6 12.b6 Kh6 13.Re8 Kh5 14.Kd6 (12.006.977) 4483 TB:208.203
28/65 0:03 +3.55 1.Rf8 Kg2 2.Kd3 Kg3 3.Ke4 Kg4 4.Rg8+ Kh5 5.b4 Kh6 6.Kd5 Kh7 7.Rd8 Kg6 8.b5 Kf5 9.Rc8 Kf6 10.Kd6 Kg7 11.Ke6 Kg6 12.Rg8+ Kh7 13.Rd8 Kh6 14.b6 (26.115.552) 6903 TB:436.082
29/65 0:03 +2.11 1.Rf8 Kg2 2.Kd3 Kg1 3.Ke3 Kg2 4.Rg8+ Kf1 5.Re8 Kg2 6.Rf8 Kh3 7.Rg8 Kh4 8.Ke4 Kh5 9.b4 Kh6 10.Kd5 Kh7 11.Rd8 Kg6 12.b5 Kf5 13.Rf8+ Kg6 14.Kd6 (28.066.465) 7190 TB:468.201
30/65 0:05 +2.81 1.Rf8 Kg2 2.Kd3 Kg3 3.Ke4 Kh4 4.Rg8 Kh5 5.b4 Kh6 6.Kd5 Kh7 7.Rc8 Kg6 8.b5 Kf5 9.Kd6 Kf4 10.Rg8 Kf5 11.Rh8 Kf4 12.Rf8+ Kg4 13.Ke6 Kg3 14.Kd5 (72.315.150) 12980 TB:924.351
31/65 0:05 +1.62 1.Rf8 Kg2 2.Kd3 Kg1 3.Ke3 Kg2 4.Rg8+ Kf1 5.Rc8 Kg2 6.Rd8 Kg3 7.Rg8+ Kh4 8.Ke4 Kh5 9.b4 Kh6 10.Kd5 Kh7 11.Rc8 Kh6 12.b5 Kg5 13.Kd6 Kf4 14.Re8 (80.198.457) 13699 TB:1.020.434
32/65 0:08 +2.72 1.Rf8 Kg2 2.Kd3 Kg1 3.Ke3 Kg2 4.Rc8 Kh3 5.Rg8 Kh4 6.Ke4 Kh5 7.b4 Kh6 8.Kd5 Kh7 9.Rc8 Kh6 10.b5 Kg5 11.Kd6 Kf5 12.Re8 Kg5 13.Rf8 Kg4 14.Rh8 (161.916.264) 19168 TB:1.919.691
33/65 0:11 +3.35 1.Rf8 Kh1 2.Rg8 Kh2 3.Kd3 Kh3 4.Ke3 Kh4 5.b4 Kh5 6.Ke4 Kh6 7.Kd5 Kh7 8.Rc8 Kg6 9.b5 Kh6 10.Rd8 Kg5 11.Rf8 Kg4 12.Kd6 Kg3 13.Rc8 Kh4 14.Rh8+ (259.775.678) 22460 TB:3.450.432
34/65 0:15 +3.01 1.Rf8 Kg2 2.Kd3 Kg1 3.Ke3 Kg2 4.Rc8 Kh3 5.Rg8 Kh4 6.b4 Kh5 7.Ke4 Kh6 8.Kd5 Kh7 9.Rc8 Kg6 10.b5 Kf5 11.Rf8+ Kg4 12.Ke6 Kg3 13.Rg8+ Kf3 14.Kd6 (392.891.722) 25706 TB:4.890.721
35/65 0:17 +2.56 1.Rf8 Kg2 2.Kd3 Kg1 3.Ke3 Kg2 4.Rg8+ Kf1 5.Re8 Kg2 6.Rc8 Kh3 7.Rg8 Kh4 8.b4 Kh5 9.Ke4 Kh6 10.Kd5 Kh7 11.Rc8 Kg6 12.b5 Kg5 13.Ke6 Kg4 14.Re8 (463.027.273) 27096 TB:5.490.460
36/71 0:40 +4.17 1.Rf8 Kg2 2.Kd3 Kg3 3.Ke4 Kh4 4.Rg8 Kh5 5.b4 Kh6 6.Kd5 Kh5 7.Rf8 Kg4 8.Re8 Kh5 9.b5 Kh6 10.Rd8 Kg5 11.Ke6 Kh5 12.Rh8+ Kg5 13.Rf8 Kg4 14.Re8 (1.427.180.246) 35071 TB:11.956.181
37/71 1:21 +4.27 1.Rf8 Kg2 2.Kd3 Kg3 3.Ke4 Kg4 4.Rg8+ Kh5 5.b4 Kh6 6.Kd5 Kh7 7.Rd8 Kh6 8.b5 Kg5 9.Rf8 Kg4 10.Rh8 Kf3 11.Re8 Kf2 12.Rd8 Kg3 13.Rg8+ Kf3 14.Kd6 (3.171.426.886) 38859 TB:21.760.736
38/71 1:38 +4.21 1.Rf8 Kg2 2.Kd3 Kg1 3.Ke4 Kg2 4.Ke3 Kg3 5.Rg8+ Kh4 6.Ke4 Kh5 7.b4 Kh6 8.Kd5 Kh7 9.Rd8 Kg6 10.b5 Kg5 11.Rf8 Kh6 12.Ke6 Kg6 13.Rc8 Kg5 14.Re8 (3.940.932.569) 39946 TB:24.459.877
39/77 2:14 +4.05 1.Rf8 Kh1 2.Kd3 Kh2 3.Ke3 Kh3 4.Rg8 Kh4 5.Ke4 Kh5 6.b4 Kh6 7.Kd5 Kh7 8.Rd8 Kh6 9.b5 Kg5 10.Rf8 Kh6 11.Rg8 Kh7 12.Rc8 Kh6 13.Kd6 Kg7 14.Ke6 (5.468.304.107) 40674 TB:31.593.317
40/81 4:00 +4.48 1.Rf8 Kg2 2.Kd3 Kh2 3.Rg8 Kh3 4.Kc3 Kh4 5.b4 Kh5 6.Kc4 Kh6 7.Kd5 Kh7 8.Rd8 Kg7 9.b5 Kg6 10.Rc8 Kh5 11.Rh8+ Kg4 12.Rd8 Kf4 13.Rc8 Kf5 14.Rf8+ (9.967.728.714) 41462 TB:53.913.003
41/84 5:26 +6.66 1.Rf8 Kg2 2.Kd3 Kh3 3.Rg8 Kh4 4.Ke4 Kh5 5.b4 Kh6 6.Kd5 Kh7 7.Rc8 Kh6 8.b5 Kh7 9.Rf8 Kh6 10.Rg8 Kh7 11.Re8 Kg6 12.Rd8 Kh7 13.Kd6 Kg6 14.Ke6 (13.927.589.701) 42593 TB:67.619.666
42/89 7:56 +6.52 1.Rf8 Kh2 2.Kd3 Kg3 3.Ke4 Kh4 4.Rg8 Kh5 5.b4 Kh6 6.Kd5 Kh7 7.Rd8 Kh6 8.b5 Kg5 9.Rg8+ Kf5 10.Rf8+ Kg5 11.Kd6 Kg4 12.Rc8 Kg5 13.Re8 Kg4 14.Rf8 (19.831.287.238) 41641 TB:102.993.067
43/89 9:18 +4.87 1.Rf8 Kg2 2.Kd3 Kh1 3.Rh8+ Kg1 4.Ke3 Kg2 5.Rd8 Kg3 6.Rg8+ Kh4 7.Ke4 Kh5 8.b4 Kh6 9.Kd5 Kh7 10.Rd8 Kg6 11.b5 Kg5 12.Rf8 Kh4 13.Re8 Kh5 14.Ke6 (23.027.712.937) 41209 TB:124.473.543
44/111 14:57 +12.89 1.Rf8 Kh2 2.Rg8 Kh3 3.b4 Kh4 4.Kc4 Kh5 5.Kd5 Kh4 6.Ke4 Kh5 7.Kf5 Kh4 8.Kf4 Kh5 9.Ke4 Kh6 10.Kd5 Kh5 11.b5 Kh6 12.Rh8+ Kg5 13.Rc8 Kh4 14.Rd8 (35.832.108.636) 39921 TB:210.432.247
45/111 15:05 +4.87 1.Rf8 Kg2 2.Kd3 Kg1 3.Ke3 Kg2 4.Rg8+ Kf1 5.Rh8 Kg2 6.Rd8 Kg3 7.Rg8+ Kh4 8.Ke4 Kh5 9.b4 Kh6 10.Kd5 Kh5 11.b5 Kh6 12.Rh8+ Kg7 13.Rc8 Kg6 14.Rd8 (36.090.093.225) 39866 TB:212.420.304
46/111 20:49 +5.95 1.Rf8 Kg2 2.Kd3 Kg3 3.Ke4 Kg4 4.Rg8+ Kh5 5.b4 Kh6 6.Kd5 Kh7 7.Rc8 Kg6 8.b5 Kg5 9.Rd8 Kf5 10.Rf8+ Kg4 11.Ke6 Kh3 12.Re8 Kg2 13.Rg8+ Kh3 14.Rh8+ (48.277.808.332) 38638 TB:259.381.154
47/111 25:54 +10.92 1.Rf8 Kg2 2.Kd3 Kg3 3.Ke4 Kg2 4.Ke3 Kg3 5.Rg8+ Kh3 6.Kf3 Kh4 7.Ke4 Kh5 8.b4 Kh6 9.Kd5 Kh7 10.Rc8 Kg6 11.b5 Kh7 12.Re8 Kg6 13.Rf8 Kg5 14.Ke6 (58.692.792.027) 37766 TB:284.434.613
48/111 32:16 +10.56 1.Rf8 Kg2 2.Kd3 Kh3 3.Rg8 Kh4 4.Ke4 Kh5 5.b4 Kh6 6.Kd5 Kh7 7.Rc8 Kg6 8.b5 Kh5 9.Rg8 Kh4 10.Rh8+ Kg3 11.Re8 Kg2 12.Rc8 Kh3 13.Kd6 Kg4 14.Rf8 (71.125.507.213) 36730 TB:317.185.727
49/111 37:39 +7.48 1.Rf8 Kg2 2.Kd3 Kg3 3.Ke4 Kg2 4.Ke3 Kg1 5.Re8 Kg2 6.Rc8 Kh3 7.Rg8 Kh4 8.b4 Kh5 9.Ke4 Kh6 10.Kd5 Kh7 11.Rc8 Kg6 12.b5 Kh6 13.Rg8 Kh7 14.Re8 (80.364.767.242) 35564 TB:366.661.390
50/121 39:49 +12.05 1.Rf8 Kg2 2.Kd3 Kg1 3.Ke3 Kg2 4.Rc8 Kg3 5.Rg8+ Kh4 6.b4 Kh5 7.Ke4 Kh6 8.Kd5 Kh7 9.Rc8 Kg7 10.b5 Kg6 11.Rh8 Kg7 12.Rd8 Kh6 13.Rg8 Kh7 14.Re8 (84.380.371.548) 35311 TB:379.550.990
51/121 43:14 +M53 1.Rf8 Kg2 2.Kd3 Kh1 3.Ke4 Kg2 4.Ke3 Kg1 5.Re8 Kg2 6.Rd8 Kh3 7.Rg8 Kh4 8.b4 Kh5 9.Ke4 Kh6 10.Kd5 Kh7 11.Rc8 Kg7 12.b5 Kh7 13.Rd8 Kh6 14.Re8 (90.211.811.998) 34775 TB:393.771.789
52/121 45:22 +M47 1.Rf8 Kg2 2.Kd3 Kg3 3.Ke4 Kg2 4.Ke3 Kg1 5.Re8 Kg2 6.Rd8 Kh3 7.Rg8 Kh4 8.b4 Kh5 9.Ke4 Kh6 10.Kd5 Kh7 11.Rd8 Kg6 12.b5 Kh5 13.Ke6 Kg5 14.Rh8 (93.222.637.537) 34245 TB:409.523.987
53/121 49:41 +M45 1.Rf8 Kg2 2.Kd3 Kg3 3.Ke4 Kg2 4.Ke3 Kg1 5.Re8 Kg2 6.Rd8 Kh3 7.Rg8 Kh4 8.b4 Kh5 9.Ke4 Kh6 10.Kd5 Kh7 11.Rd8 Kh6 12.b5 Kh5 13.Rh8+ Kg4 14.Ke6 (99.299.000.274) 33301 TB:447.093.419
54/121 51:25 +M46 1.Rf8 Kg2 2.Kd3 Kg3 3.Ke4 Kg2 4.Ke3 Kg1 5.Re8 Kg2 6.Rd8 Kh3 7.Rg8 Kh4 8.Ke4 Kh3 9.Kf4 Kh2 10.Kf3 Kh1 11.Rd8 Kh2 12.Re8 Kg1 13.Rh8 Ra7 14.Rxb8 (101.500.440.822) 32893 TB:461.428.375
55/121 51:25 +M46 1.Rf8 Kg2 2.Kd3 Kg3 3.Ke4 Kg2 4.Ke3 Kg1 5.Re8 Kg2 6.Rd8 Kh3 7.Rg8 Kh4 8.Ke4 Kh3 9.Kf4 Kh2 10.Kf3 Kh1 11.Rd8 Kh2 12.Re8 Kg1 13.Rh8 Ra7 14.Rxb8 (101.503.758.117) 32893 TB:461.439.460
56/121 51:25 +M46 1.Rf8 Kg2 2.Kd3 Kg3 3.Ke4 Kg2 4.Ke3 Kg1 5.Re8 Kg2 6.Rd8 Kh3 7.Rg8 Kh4 8.Ke4 Kh3 9.Kf4 Kh2 10.Kf3 Kh1 11.Rd8 Kh2 12.Re8 Kg1 13.Rh8 Ra7 14.Rxb8 (101.505.725.376) 32892 TB:461.447.386
57/121 57:57 +M45 1.Rf8 Kg2 2.Kd3 Kg3 3.Ke4 Kg2 4.Ke3 Kg1 5.Re8 Kg2 6.Rc8 Kg3 7.Rg8+ Kh4 8.Ke4 Kh5 9.b4 Kh6 10.Kd5 Kh7 11.Rd8 Kg6 12.b5 Kf5 13.Rf8+ Kg4 14.Kd6 (108.770.925.077) 31279 TB:509.024.235
best move: Re8-f8 time: 65:23.828 min n/s: 29.660.000 nodes: 116.328.231.545 TB: 554.361.304
no chess program was born totally from one mind. all chess programs have many ideas from many minds.

User avatar
Eelco de Groot
Posts: 4170
Joined: Sun Mar 12, 2006 1:40 am
Location: Groningen

Re: Godzilla Endgame Chess Puzzles (1)

Post by Eelco de Groot » Mon Oct 02, 2017 10:49 pm

Stockfish seems to find No. 2 late on my computer, after 49 minutes. It is a bit changed engine though, just an experiment but the very latest codebase. I have not tried pure Stockfish or tablebases etc.

[D]1B1K1k2/4N2p/3pP1pP/6p1/p7/3N2b1/2r2p2/8 w - -

Engine: Sf20171002 MOD HT (512 MB)
(With a little bit of nullmove in qsearch)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott

34/49 0:01 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (25.883.166) 14901

35/49 0:02 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (38.615.615) 14716

36/49 0:03 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (43.730.351) 14513

37/52 0:03 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (46.536.408) 14461

38/53 0:03 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (57.077.040) 14486

39/53 0:04 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (71.300.630) 14409

40/54 0:06 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (85.469.935) 14164

41/54 0:07 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (113.510.665) 14215

42/57 0:09 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (139.417.650) 14172

43/56 0:13 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (192.137.325) 14118

44/58 0:17 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (252.296.540) 14074

45/59 0:24 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (336.598.324) 13859

46/60 0:25 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (357.530.498) 13833

47/61 0:32 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (444.653.219) 13722

48/62 0:42 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (580.713.569) 13571

49/62 0:51 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (690.554.314) 13496

50/63 1:13 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (984.087.251) 13333

51/65 1:18 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (1.049.469.688) 13357

52/66 1:41 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (1.347.293.565) 13311

53/67 1:54 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (1.522.206.600) 13300

54/67 2:24 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (1.936.928.417) 13429

55/70 2:36 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (2.105.972.092) 13434

56/69 3:11 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (2.563.213.391) 13382

57/71 4:06 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (3.321.198.553) 13483

58/71 7:47 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (6.433.778.033) 13769

59/75 8:01 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (6.660.534.202) 13820

60/81 11:00 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (9.077.091.506) 13751

61/74 11:21 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (9.356.133.785) 13736

62/77 40:33 -0.08 1.Nxg6+ Kg8 2.e7 Re2 3.Nde5 Rxe5
4.Nxe5 f1Q 5.e8Q+ Qf8 6.Qxf8+ Kxf8
7.Bxd6+ Kg8 8.Ke7 a3 9.Bxa3 Bxe5
10.Ke6 Bf4 11.Kf5 Bd2 12.Be7 g4
13.Kxg4 Kf7 14.Bg5 (59.792.581.109) 24565


63/82 48:59 0.00++ 1.Nc6 (67.220.565.640) 22865

63/82 60:47 +0.06++ 1.Nc6 (79.870.494.708) 21896

63/82 61:45 +0.17++ 1.Nc6 (80.796.906.137) 21801

63/82 62:13 +0.33++ 1.Nc6 (81.239.577.405) 21758

63/82 66:26 +0.55++ 1.Nc6 (85.012.244.810) 21323

63/82 67:57 +0.84++ 1.Nc6 (86.254.967.487) 21153
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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