Questionable positions in the Hard-Talkchess-2020 set

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Jouni
Posts: 3283
Joined: Wed Mar 08, 2006 8:15 pm

Re: Questionable positions in the Hard-Talkchess-2020 set

Post by Jouni »

There is 4 winning moves at least. Analysis by Stockfish 110121:

1. +- (5.27): 1.Qxd2 Ba6 2.Ng4 Rac8 3.Re1 Rfe8 4.Qg5 Kf8 5.Ne5 Rc7 6.Ng6+ Kg8 7.Nf4 Bd3 8.Nxd3 Qd8 9.Qg3 Qxf6 10.Qxc7 cxd4 11.Rf1 Qe7 12.Qxe7 Rxe7 13.cxd4 Rc7 14.Rc1 Rc4 15.Rxc4 dxc4 16.Nb4 b5 17.Nc6 a6 18.Kf1 Kh7 19.Ne5 f6 20.Nd7 Kg8 21.Nc5 Kf7 22.Nxa6 Kf8 23.Ke2 Ke7 24.Kd2 Kd6 25.Kc3 e5 26.dxe5+ fxe5 27.Nb4 Kc5 28.Nc2 g5
2. +- (4.74): 1.Ng4 Qe7 2.Qxd2 cxd4 3.Qg5 dxc3 4.bxc3 d4 5.Rdf1 Be4 6.cxd4 Bg6 7.Rxg6 Qxg5 8.Rxg5 Kh7 9.Rh5+ Kg6 10.Re5 Rad8 11.Re3 f6 12.Rxe6 Rxd4 13.Re7 Rfd8 14.Rxa7 b5 15.Kh2 R8d7 16.Ra5 Rd2 17.Rf3 b4 18.Nf2 b3 19.axb3 R2d5 20.Ra8 f5 21.Rg3+ Kh7 22.b4 f4 23.Rg4 g5 24.Ne4
3. +- (3.87): 1.Rxd2 Qd8 2.Rf4 Qg5 3.Rg4 Qh6 4.Qe1 f6 5.Ng6 Rfe8 6.Rd3 f5 7.Rgg3 e5 8.Nxe5 Rac8 9.Qf2 f4 10.Rg4 cxd4 11.cxd4 Rc1+ 12.Kh2 Ba6 13.Rf3 Rf1 14.Qc2 Rxf3 15.Nxf3 Bc8 16.Rg6 Qh5 17.Qc6 Rf8 18.Qd6 Rf5 19.Rg5 Qf7 20.Qb8 Qf8 21.Rxf5 Bxf5 22.Qxf4 Qf6 23.Kg3 Bb1 24.a3 Be4 25.h4 a5 26.Qxf6 gxf6 27.Kf4 Kh8 28.g4 Kg8 29.g5 fxg5+ 30.Nxg5
4. +- (2.00): 1.Qg4 cxd4 2.cxd4 Qc7 3.Rf3 Ba6 4.Rc3 Qe7 5.Rxd2 Qf6 6.Rf2 Qh6 7.Qg3 f5 8.Rf4 Rfc8 9.Re3 Bb5 10.Rh4 Qf6 11.Ng6 Kf7 12.Nf4 Bd7 13.Rh7 Qxd4 14.Kh2 Rh8 15.Rxh8 Rxh8 16.Ng6 Rg8 17.Ne5+ Ke7 18.Rd3 Qxb2 19.Rc3 g5 20.Rc7 f4 21.Qe1 g4 22.hxg4 Ke8 23.Nxd7 Rxg4 24.Qxe6+ Kd8 25.Qxg4
5. +/= (0.46): 1.Qe3 cxd4 2.cxd4 Rac8 3.Qxd2 Ba6 4.Re1 Qe7 5.Rf3 Bb5 6.Rg3 Rc7 7.Qf4 Be8 8.Nd3 f6 9.Qg4 Rc6 10.a3 Rf7 11.Nf4 f5 12.Qg5 Qf6 13.Kh2 Qxg5 14.Rxg5 Rf6 15.Nxd5 exd5 16.Rxe8+ Kf7 17.Rd8 g6 18.Rd7+ Kf8 19.h4 Rc2 20.h5 gxh5 21.Rxh5 Kg8 22.Rg5+ Kf8 23.Rxa7 f4 24.Rh5 Kg8 25.Ra8+ Kg7
Jouni
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Vinvin
Posts: 5228
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Questionable positions in the Hard-Talkchess-2020 set

Post by Vinvin »

Paloma wrote: ↑Fri Jan 22, 2021 4:23 am Why has Nr.192 (.... bm Qxd2 Ng4; id "Hard-Talkchess-2020.192") 1.Ng4 as second solution?

192: Hard-Talkchess-2020.192
r4rk1/pb3pp1/1p1qpR2/2ppN3/3P4/2P4P/PP1pQ1P1/3R2K1 w - - 0 1

Analysis by Crystal 110920 Cry3.0:

1. +- (6.57): 1.Qxd2 Ba6 2.Ng4 Rfc8 3.Qg5 Kf8 4.Rf2 Qe7 5.Qh5 Kg8 6.Ne5 f6 7.Ng6 Qd6 8.Rf4 Bc4 9.Qh8+ Kf7 10.Qh7 cxd4
2. +- (3.95): 1.Rxd2 Qd8 2.Rf4 g5 3.Rf1 f6 4.Qh5 Qe8 5.Qh6 Qe7 6.Rdf2 Qg7 7.Rxf6 Qxh6 8.Rxh6 Rxf1+ 9.Kxf1 cxd4 10.cxd4 Ba6+
3. +- (3.46): 1.Ng4 cxd4 2.Rdf1 Qc5 3.Nh6+ Kh7 4.Qd3+ Kh8 5.Nxf7+ Kg8 6.b4 Ba6 7.Rh6 Rxf7 8.Qh7+ Kf8 9.Rxf7+ Kxf7 10.Qg6+ Kf8

3core @3.8GHz, depth 34
Jouni wrote: ↑Fri Jan 22, 2021 9:09 am There is 4 winning moves at least. Analysis by Stockfish 110121:

1. +- (5.27): 1.Qxd2 Ba6 2.Ng4 Rac8 3.Re1 Rfe8 4.Qg5 Kf8 5.Ne5 Rc7 6.Ng6+ Kg8 7.Nf4 Bd3 8.Nxd3 Qd8 9.Qg3 Qxf6 10.Qxc7 cxd4 11.Rf1 Qe7 12.Qxe7 Rxe7 13.cxd4 Rc7 14.Rc1 Rc4 15.Rxc4 dxc4 16.Nb4 b5 17.Nc6 a6 18.Kf1 Kh7 19.Ne5 f6 20.Nd7 Kg8 21.Nc5 Kf7 22.Nxa6 Kf8 23.Ke2 Ke7 24.Kd2 Kd6 25.Kc3 e5 26.dxe5+ fxe5 27.Nb4 Kc5 28.Nc2 g5
2. +- (4.74): 1.Ng4 Qe7 2.Qxd2 cxd4 3.Qg5 dxc3 4.bxc3 d4 5.Rdf1 Be4 6.cxd4 Bg6 7.Rxg6 Qxg5 8.Rxg5 Kh7 9.Rh5+ Kg6 10.Re5 Rad8 11.Re3 f6 12.Rxe6 Rxd4 13.Re7 Rfd8 14.Rxa7 b5 15.Kh2 R8d7 16.Ra5 Rd2 17.Rf3 b4 18.Nf2 b3 19.axb3 R2d5 20.Ra8 f5 21.Rg3+ Kh7 22.b4 f4 23.Rg4 g5 24.Ne4
3. +- (3.87): 1.Rxd2 Qd8 2.Rf4 Qg5 3.Rg4 Qh6 4.Qe1 f6 5.Ng6 Rfe8 6.Rd3 f5 7.Rgg3 e5 8.Nxe5 Rac8 9.Qf2 f4 10.Rg4 cxd4 11.cxd4 Rc1+ 12.Kh2 Ba6 13.Rf3 Rf1 14.Qc2 Rxf3 15.Nxf3 Bc8 16.Rg6 Qh5 17.Qc6 Rf8 18.Qd6 Rf5 19.Rg5 Qf7 20.Qb8 Qf8 21.Rxf5 Bxf5 22.Qxf4 Qf6 23.Kg3 Bb1 24.a3 Be4 25.h4 a5 26.Qxf6 gxf6 27.Kf4 Kh8 28.g4 Kg8 29.g5 fxg5+ 30.Nxg5
4. +- (2.00): 1.Qg4 cxd4 2.cxd4 Qc7 3.Rf3 Ba6 4.Rc3 Qe7 5.Rxd2 Qf6 6.Rf2 Qh6 7.Qg3 f5 8.Rf4 Rfc8 9.Re3 Bb5 10.Rh4 Qf6 11.Ng6 Kf7 12.Nf4 Bd7 13.Rh7 Qxd4 14.Kh2 Rh8 15.Rxh8 Rxh8 16.Ng6 Rg8 17.Ne5+ Ke7 18.Rd3 Qxb2 19.Rc3 g5 20.Rc7 f4 21.Qe1 g4 22.hxg4 Ke8 23.Nxd7 Rxg4 24.Qxe6+ Kd8 25.Qxg4
5. +/= (0.46): 1.Qe3 cxd4 2.cxd4 Rac8 3.Qxd2 Ba6 4.Re1 Qe7 5.Rf3 Bb5 6.Rg3 Rc7 7.Qf4 Be8 8.Nd3 f6 9.Qg4 Rc6 10.a3 Rf7 11.Nf4 f5 12.Qg5 Qf6 13.Kh2 Qxg5 14.Rxg5 Rf6 15.Nxd5 exd5 16.Rxe8+ Kf7 17.Rd8 g6 18.Rd7+ Kf8 19.h4 Rc2 20.h5 gxh5 21.Rxh5 Kg8 22.Rg5+ Kf8 23.Rxa7 f4 24.Rh5 Kg8 25.Ra8+ Kg7

It seems that now, SF and mods find a clear win after Rxd2. That was not the case 1 year ago.
I will remove this one, thanks !

Eval after Rxd2 :

CF_EXT_x64_281220_ELTO_SSE41_popcnt:
...
41/63 06:57 2 248 092 805 5 379 357 +4,71 1. ... Qe7 2.Ng4 cxd4 3.Nh6+ Kh7 4.Qh5 Qxf6 5.Ng4+ Qh6 6.Nxh6 gxh6 7.cxd4 Ba6 8.Qf3 Bc4 9.Qa3 a5 10.Rf2 Rae8 11.Qg3 Bxa2 12.Qd3+ f5 13.b3 Bb1...
41/60 06:57 2 248 092 805 5 379 357 +4,02 1. ... Qd8 2.Rf4 Qg5 3.Rg4 Qh6 4.Qe1 f6 5.Ng6 Rfe8 6.Rd3 f5 7.Rgg3 e5 8.Nxe5 Re6 9.h4 f4 10.Rg5 Rf8 11.Qf2 Rd6 12.dxc5 bxc5 13.Qxc5 Re6 14.Qc7 Bc6 ...
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Jouni
Posts: 3283
Joined: Wed Mar 08, 2006 8:15 pm

Re: Questionable positions in the Hard-Talkchess-2020 set

Post by Jouni »

Crystal 3.1 is excellent in this remaining 116 positions suite. It solves 83 positions with 1 minute limit, when using 6 cores. This is one really stunning solution:
[d]4q1kr/p6p/1prQPppB/4n3/4P3/2P5/PP2B2P/R5K1 w - - 0 1

Analysis by Crystal 140121:

...
1.Qxe5 fxe5 2.Rf1 Rc7 3.Bb5 Qd8 4.Ba4 Re7 5.Bd1 Qe8 6.Bb3 Qd8 7.Bd5 b5 8.Bc6 Qb6+ 9.Kh1 Qb8 10.Bxb5 Qd8 11.Kg1 Qc8 12.Bc6 Qb8 13.b3 Qc8
+/= (0.49) Depth: 20/41 00:00:02 20602kN
1.Qxe5
+/- (0.72 ++) Depth: 21/49 00:00:03 28911kN
1.Qxe5 fxe5 2.Rf1 Rc7 3.Bb5 Qe7 4.Ba4 Rc4 5.Bb3 b5 6.a3 a6 7.a4 Qa7+ 8.Kh1 Qa8 9.h3 Qe8 10.Kg1 Qe7 11.Kh2 Qe8 12.Ba2 Qe7 13.Rf3 Qe8 14.Rf2 Qe7 15.b4 Qe8 16.Bb3 Qd8 17.axb5
+/- (0.73) Depth: 21/49 00:00:03 31408kN
1.Qxe5
+/- (1.01 ++) Depth: 22/36 00:00:03 33218kN
1.Qxe5
+/- (1.06 ++) Depth: 22/36 00:00:03 33948kN
1.Qxe5
+/- (1.12 ++) Depth: 22/36 00:00:03 35285kN
1.Qxe5
+/- (1.21 ++) Depth: 22/36 00:00:04 36331kN
1.Qxe5
+/- (1.33 ++) Depth: 22/38 00:00:04 37970kN
1.Qxe5
+- (2.01 ++) Depth: 22/47 00:00:04 39914kN
1.Qxe5
+- (2.45 ++) Depth: 22/48 00:00:04 42220kN
1.Qxe5
+- (3.01 ++) Depth: 22/56 00:00:05 47081kN
1.Qxe5 fxe5 2.Rf1 Rc8 3.Bd1 Qxe6 4.Bb3 Qxb3 5.axb3 Re8 6.c4 a6 7.Kh1 Rc8 8.Kg2 Re8 9.Rf6 Rb8 10.Rf2 Re8 11.b4 Ra8 12.Rf6 Rb8 13.Kh3 Rc8 14.Kg3 Re8 15.c5 bxc5 16.bxc5 a5
+- (3.37) Depth: 22/56 00:00:05 48130kN
1.Qxe5
+- (3.41 ++) Depth: 23/51 00:00:05 53634kN
1.Qxe5
+- (3.46 ++) Depth: 23/51 00:00:05 55306kN
1.Qxe5
+- (3.52 ++) Depth: 23/51 00:00:06 56390kN
1.Qxe5
+- (3.61 ++) Depth: 23/51 00:00:06 58842kN
1.Qxe5 fxe5 2.Rf1 Rc8 3.Bd1 Qxe6 4.Bb3 Qxb3 5.axb3 Ra8 6.b4 a6 7.c4 Re8 8.Kg2 Rb8 9.Rf6 a5 10.bxa5 bxa5 11.Kg3 Rb3+ 12.Kh4 Rb8 13.Kg4 Ra8 14.Kg3 Rb8 15.c5 Rb3+ 16.Kh4 Rb8 17.c6 a4 18.Kg4 Ra8 19.Kf3 a3 20.bxa3 Rxa3+ 21.Kg4 Ra8 22.c7 Rc8
+- (3.59) Depth: 23/51 00:00:06 59171kN
1.Qxe5
+- (3.84 ++) Depth: 24/49 00:00:06 63090kN
1.Qxe5
+- (3.88 ++) Depth: 24/49 00:00:06 63622kN
1.Qxe5
+- (3.95 ++) Depth: 24/49 00:00:06 65425kN
1.Qxe5
+- (4.03 ++) Depth: 24/49 00:00:07 68395kN
1.Qxe5 fxe5 2.Rf1 Rc8 3.Bd1 Qxe6 4.Bb3 Qxb3 5.axb3 Ra8 6.b4 b5 7.Kg2 Rd8 8.Kg3 Rb8 9.Kh4 Rc8 10.Kg5 Ra8 11.Rf2 Rc8 12.Kf6 Rd8 13.Kxe5 Rb8 14.Rf1 g5 15.Rf6 Ra8 16.Kf5
+- (4.06) Depth: 24/49 00:00:07 71402kN, tb=12
1.Qxe5
+- (4.36 ++) Depth: 25/41 00:00:08 76081kN, tb=12
1.Qxe5
+- (4.40 ++) Depth: 25/41 00:00:08 76436kN, tb=12
1.Qxe5
+- (4.46 ++) Depth: 25/41 00:00:08 79495kN, tb=12
1.Qxe5
+- (4.55 ++) Depth: 25/41 00:00:08 80237kN, tb=12
1.Qxe5 fxe5 2.Rf1 Rc8 3.Bd1 Qxe6 4.Bb3 Qxb3 5.axb3 Rd8 6.c4 a5 7.Kg2 Ra8 8.Kg3 Rb8 9.Kg4 Ra8 10.Kg5 Rc8 11.Kf6 Rf8+ 12.Bxf8 Kxf8 13.Rd1 Ke8 14.Rd6 Rf8+ 15.Ke6 Rf2 16.Rxb6 Kd8 17.h4 Rxb2 18.Rb5 Kc7 19.Kxe5 Kc6 20.Rxa5 Rxb3 21.Ra7
+- (4.46) Depth: 25/42 00:00:08 82710kN, tb=12
1.Qxe5
+- (4.63 ++) Depth: 26/39 00:00:08 84137kN, tb=12
1.Qxe5
+- (4.68 ++) Depth: 26/39 00:00:08 84410kN, tb=12
1.Qxe5
+- (4.74 ++) Depth: 26/39 00:00:09 86798kN, tb=16
1.Qxe5
+- (4.83 ++) Depth: 26/44 00:00:09 87822kN, tb=16
1.Qxe5
+- (4.95 ++) Depth: 26/44 00:00:10 99479kN, tb=16

10 years ago this was very hard and took hours of time and special settings :!: .
Jouni
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Vinvin
Posts: 5228
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Questionable positions in the Hard-Talkchess-2020 set

Post by Vinvin »

Another refuted solution for 73) .. e6-e5
1... Bg7 seems also good :

Code: Select all

FEN: 4bbk1/3nq2r/pr2p3/Np1p1p1p/1PpP1Pp1/2P1P1P1/PQ1NB1PR/2K4R b - - 0 1
Crystal3.1-sse4-popcnt:
...
 26/47	01:56	 581 639 105	4 978 380	-2,71	1. ... Qf6 2.Rd1 Bd6 3.Rhh1 Rb8 4.Rdg1 Nb6 5.Bd1 Bc7 6.Nb1 Na4 7.Qa1 Bxa5 8.bxa5 Rhb7 9.Bc2 Qd8 10.a3 Qxa5 11.Kd2 Nb6 12.Re1 Nd7 13.Ke2 Nf6 14.Nd2 Qb6 15.Rb1 a5 16.Rhe1
 27/42	01:56	 581 639 105	4 978 380	-3,81	1. ... Bg7 2.Re1 e5 3.Rhh1 Re6 4.fxe5 Nxe5 5.dxe5 Bxe5 6.Rd1 Qf6 7.Nb1 Bxg3 8.Rxd5 Rhe7 9.Qc2 Rxe3 10.Bd1 Be5 11.Kb2 Kg7 12.Qd2 f4 13.Rf1 Bf7 14.Rd8 Bg6 15.Qxe3 fxe3 16.Rxf6 Bxf6 17.Rd6
 27/54	01:56	 581 639 105	4 978 380	-4,08	1. ... e5 2.dxe5 Nxe5 3.fxe5 Qxe5 4.Nf3 gxf3 5.Bxf3 Qxe3+ 6.Qd2 d4 7.Re1 Bh6 8.Rxe3 Bxe3 9.cxd4 Re7 10.Kc2 Bxd2 11.Kxd2 Rd6 12.Rh4 Bf7 13.Nb7 Rg6 14.Rf4 Rxg3 15.Nd6 Bg6 16.Nxf5 Bxf5 17.Rxf5
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Vinvin
Posts: 5228
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Questionable positions in the Hard-Talkchess-2020 set

Post by Vinvin »

One more : 25) e4-e5
1.Rad1 seems as good.

Code: Select all

FEN: 1rb1r1k1/2qn1pbp/pp1p2p1/2nP4/P1p1PP2/2N1BQNP/1PB3P1/R4R1K w - - 0 1

Crystal3.1-sse4-popcnt:
...
 27/57	00:21	 108 471 774	5 078 266	+2,07	1.e5 Qd8 2.Rad1 dxe5 3.f5 e4 4.Ncxe4 Ne5 5.Qf4 Nxe4 6.Bxe4 Qd6 7.h4 b5 8.Bd4 bxa4 9.Bc2 Bb7 10.h5 Qxd5 11.Be4 Qd6 12.Ba7 g5 13.Qxg5 Qf6 14.Qxf6 Bxf6 15.Bxb8 Rxb8 16.Bxb7 Rxb7 17.Ne4 Ng4 18.Nxf6+ Nxf6
 27/49	00:21	 108 471 774	5 078 266	+2,11	1.Rad1 Qd8 2.e5 dxe5 3.f5 e4 4.Ncxe4 Ne5 5.Qf4 Nxe4 6.Bxe4 Qd6 7.Bd4 Bb7 8.Bf3 Rbd8 9.Ne4 Qf8 10.Bxb6 Nd3 11.Qh4 Rxd5 12.Ng5 h6 13.fxg6 Rxg5 14.Bxb7 Rxg6 15.Bd5 Kh8 16.Bd4 Bxd4 17.Qxd4+ Qg7 18.Qxg7+ Rxg7 19.Bxf7 Rc8 20.b3 cxb3 21.Bxb3 Rd7 22.Kh2 Rc3 23.Be6 Rd6 24.Bf5
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Vinvin
Posts: 5228
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Questionable positions in the Hard-Talkchess-2020 set

Post by Vinvin »

The 114 remaining positions.
The sheet of results updated : https://www.dropbox.com/s/p9wh7iahnidpm ... s.ods?dl=0

Code: Select all

1B1K1k2/4N2p/3pP1pP/6p1/p7/3N2b1/2r2p2/8 w - - bm Nc6; id "Hard-Talkchess-2020.001" ;
1B1r4/rp2npkp/2b1pbp1/1qp5/nPN1R3/1P1P1QP1/2P2PBP/5R1K w - - bm Qxf6+; id "Hard-Talkchess-2020.002" ;
1N4K1/1pp1p3/7k/2r3pP/p2pp1P1/P6N/8/2B5 w - - bm Nc6; id "Hard-Talkchess-2020.003" ;
1k6/3p4/1B6/4Pp1p/1p5R/1p4p1/pP3n2/K6n w - - bm Rxh1; id "Hard-Talkchess-2020.007" ;
1nb3rr/2pp3p/p1k2P2/n1q1PN2/P1pR3N/b4PBp/1R2P3/1KQ5 w - - bm Rd6+; id "Hard-Talkchess-2020.008" ;
1q1r3k/3P1pp1/ppBR1n1p/4Q2P/P4P2/8/5PK1/8 w - - bm Rxf6; id "Hard-Talkchess-2020.010" ;
1r1q1rk1/1p2b2p/pN6/P1pP1bp1/5p2/2B2Q2/1P4PP/R4RK1 w - - bm g4; id "Hard-Talkchess-2020.011" ;
1r1rb1k1/5ppp/4p3/1p1p3P/1q2P2Q/pN3P2/PPP4P/1K1R2R1 w - - bm Rxg7+; id "Hard-Talkchess-2020.012" ;
1r2kb1r/p5p1/1np1p1N1/3pPnB1/1p1P2B1/qP6/2PQ1P1P/1K1R3R b k - bm Nc4; id "Hard-Talkchess-2020.013" ;
1r3r2/4bpkp/1qb1p1p1/3pP1P1/p1pP1Q2/PpP2N1R/1Pn1B2P/3RB2K w - - bm Qf6+; id "Hard-Talkchess-2020.014" ;
1r3rk1/3bbppp/1qn2P2/p2pP1P1/3P4/2PB1N2/6K1/qNBQ1R2 w - - bm Bxh7+; id "Hard-Talkchess-2020.016" ;
1r3rk1/5p1p/p2pb1p1/3Np1P1/2pRPR2/qP2Q1N1/P1PK3P/8 w - - bm Nf5; id "Hard-Talkchess-2020.019" ;
1r4k1/pb3p1p/r1p1p1p1/2p1P3/P1P2P2/1PB5/2K3PP/5R2 w - - bm a5; id "Hard-Talkchess-2020.020" ;
1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - - bm Rxb3+; id "Hard-Talkchess-2020.021" ;
1rb1qrk1/2b2pp1/p3pBn1/3pP1Pp/1ppP4/2P1QN2/PP3P1P/R2BR1K1 w - - bm Nh4; id "Hard-Talkchess-2020.023" ;
1rbq1r1k/7p/2np2p1/p2N1p2/R1B1PP1b/1PP1N3/8/3Q1K1R w - - bm Ra2; id "Hard-Talkchess-2020.028" ;
1rbq1rk1/1p2ppbn/p2p2p1/P1pP4/4P3/2PB1N2/2P3PP/R1B1QRK1 w - - bm e5; id "Hard-Talkchess-2020.029" ;
2R5/k1p1p1K1/P1p1Pp2/5P2/7P/pB6/2p5/2r5 w - - bm Rxc7+; id "Hard-Talkchess-2020.031" ;
2b1rk2/5p2/p1P5/2p2P2/2p5/7B/P7/2KR4 w - - bm f6; id "Hard-Talkchess-2020.034" ;
2b3r1/1p1p2pk/2nBp2p/2P1Ppq1/R7/4QBPP/5P2/5K2 w - - bm Qxg5; id "Hard-Talkchess-2020.035" ;
2bk2r1/5q2/1p2pP1Q/pP1pP1P1/P2P4/8/2RK4/8 w - - bm Kc1; id "Hard-Talkchess-2020.036" ;
2bqrr1k/p5b1/1p1p2pp/nPpBp3/P1P1N2P/3PN1P1/R4P1K/3Q1R2 w - - bm Nc3; id "Hard-Talkchess-2020.038" ;
2k2Br1/p6b/Pq1r4/1p2p1b1/1Ppp2p1/Q1P3N1/5RPP/R3N1K1 b - - bm Rf6; id "Hard-Talkchess-2020.039" ;
2q2r1k/p1p1b1pp/br1p1n2/2p1N1BP/Q1P1P3/8/PP1N1PP1/2KR3R w - - bm Ng6+; id "Hard-Talkchess-2020.043" ;
2r2bk1/pNq3p1/2Pp3p/1p1Prp2/1P2p1P1/6Q1/P4P1P/2RR2K1 w - - bm Qxe5; id "Hard-Talkchess-2020.046" ;
2r2r1k/qb3p1p/p2p1Np1/np1Pp1P1/2P5/3RP2P/5R2/4Q1K1 w - - bm Rf4; id "Hard-Talkchess-2020.047" ;
2r2rk1/1bpR1p2/1pq1pQp1/p3P2p/P1PR3P/5N2/2P2PPK/8 w - - bm Kg3; id "Hard-Talkchess-2020.049" ;
2r2rk1/2q2p1p/p1p1nPpQ/3p4/4p1B1/8/PPP3PP/R4R1K w - - bm Rf5; id "Hard-Talkchess-2020.050" ;
2r4r/3n1pk1/pq1p1bp1/3B4/1p2P1N1/7P/PP1Q1PK1/3RR3 w - - bm Bxf7; id "Hard-Talkchess-2020.052" ;
2r5/prkpR1p1/2p1ppK1/P1p1N1B1/P1P1P3/8/8/8 w - - bm Bf4; id "Hard-Talkchess-2020.053" ;
3B4/1r2p3/r2p1p2/bkp1P1p1/1p1P1PPp/p1P1K2P/PPB5/8 w - - bm Ba4+; id "Hard-Talkchess-2020.054" ;
3b2n1/1q3p1k/6pp/np2N3/2bBPN2/1pP4P/4QPP1/1B4K1 w - - bm Nexg6; id "Hard-Talkchess-2020.056" ;
3k4/4pp2/n2n4/5BN1/3N4/b7/4K3/8 w - - bm Nxf7+; id "Hard-Talkchess-2020.058" ;
3kB3/5K2/7p/3p4/3pn3/4NN2/8/1b4B1 w - - bm Nf5; id "Hard-Talkchess-2020.059" ;
3q1r1k/6rp/3p4/P2Pbp1Q/N3Pp1n/2P5/P1B2RPP/R6K b - - bm f3; id "Hard-Talkchess-2020.061" ;
3rqbk1/2p3p1/b6p/Q1p5/2N1PP2/1P1P2P1/2P4P/5R1K b - - bm Bc8; id "Hard-Talkchess-2020.065" ;
4B3/1Pb4p/8/4p1k1/3p1p2/5K2/2P5/8 b - - bm e4+; id "Hard-Talkchess-2020.066" ;
4K1k1/8/1p5p/1Pp3b1/8/1P3P2/P1B2P2/8 w - - bm f4; id "Hard-Talkchess-2020.067" ;
4K2k/1pQp3p/1R4p1/1P4P1/8/3P3P/1q3r2/8 w - - bm Qd8; id "Hard-Talkchess-2020.068" ;
4R3/P7/2bB2p1/r3pk2/2p2p1P/2P2P1K/6P1/8 w - - bm Rxe5+; id "Hard-Talkchess-2020.069" ;
4b1k1/P4pPp/1R3P1P/2r5/8/1P6/1K6/8 w - - bm a8=B; id "Hard-Talkchess-2020.070" ;
4b3/7p/4k3/B4pPP/5K2/P4P2/8/8 w - - bm g6; id "Hard-Talkchess-2020.072" ;
4k1br/1K1p1n1r/2p2pN1/P2p1N2/2P3pP/5B2/P2P4/8 w - - bm Kc8; id "Hard-Talkchess-2020.074" ;
4q1kr/p6p/1prQPppB/4n3/4P3/2P5/PP2B2P/R5K1 w - - bm Qxe5; id "Hard-Talkchess-2020.078" ;
4r1rk/p3qpp1/1pnp1n1p/5P2/P1PPP3/4Q2P/2BB2R1/6RK w - - bm Rxg7; id "Hard-Talkchess-2020.081" ;
5k2/8/pppppppp/8/PPPPPPPP/8/8/5K2 w - - bm d5; id "Hard-Talkchess-2020.083" ;
5nr1/2Pp2pk/3Pp1p1/4P1P1/6P1/5K2/8/7n w - - bm c8=N; id "Hard-Talkchess-2020.087" ;
5rk1/pp3p1p/7b/2pR4/8/2P4P/P1PNr1P1/2K4R b - - bm Rxd2; id "Hard-Talkchess-2020.089" ;
6R1/8/2pB3k/2P4p/5p1q/5P2/4P1K1/8 w - - bm Bf8+; id "Hard-Talkchess-2020.090" ;
6br/1KNp1n1r/2p2p2/P1ppRP2/1kP3pP/3PBB2/PN1P4/8 w - - bm Bxc5+; id "Hard-Talkchess-2020.091" ;
6k1/1qr1p2p/ppN5/3p1N2/6p1/1P1P2Pp/PP2PP1P/2RK4 w - - bm Ncxe7+; id "Hard-Talkchess-2020.093" ;
6k1/8/1pK4p/bPp5/8/1P6/P1B2P2/8 w - - bm b4; id "Hard-Talkchess-2020.094" ;
6k1/p7/8/4B3/Pp3p1P/qP5P/P1Rb2K1/8 w - - bm Kf3; id "Hard-Talkchess-2020.095" ;
6k1/ppn2p2/8/2P2P1p/1P2K3/2N5/P7/8 w - - bm Nd5; id "Hard-Talkchess-2020.096" ;
6r1/6r1/2p1k1pp/p1pbP2q/Pp1p1PpP/1P1P2NR/1KPQ3R/8 b - - bm Qf5; id "Hard-Talkchess-2020.097" ;
7k/4PBNp/7P/2p5/2P5/2rq2Pp/1P3P1K/8 b - - bm Qxg3+; id "Hard-Talkchess-2020.099" ;
7k/pp2Np1p/2p2P1N/5pP1/7K/P4n2/1q3Q2/5n2 w - - bm Kh5; id "Hard-Talkchess-2020.101" ;
8/1B3b1p/7P/p2p4/P2pp1kp/Q7/1N1Pq2P/7K w - - bm Qh3+; id "Hard-Talkchess-2020.103" ;
8/1p1pNpbk/1q1P4/pP2p2K/P3N3/4P1P1/3P4/8 w - - bm Nc8; id "Hard-Talkchess-2020.105" ;
8/2N4r/1p3pkp/8/5K1p/2P4N/P3Bn2/8 w - - bm Bh5+; id "Hard-Talkchess-2020.108" ;
8/2p1q3/p3P3/2P4p/1PBP2kP/2N3P1/7K/8 w - - bm Be2+; id "Hard-Talkchess-2020.109" ;
8/2pN1k2/p4p1p/Pn1R4/3b4/6Pp/1P3K1P/8 w - - bm Ke1; id "Hard-Talkchess-2020.110" ;
8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - bm Nf6+; id "Hard-Talkchess-2020.113" ;
8/3ppp1p/3P4/4N3/8/3n1pKp/8/7k w - - bm Nxd3; id "Hard-Talkchess-2020.114" ;
8/4nk2/1p3p2/1r1p2pp/1P1R1N1P/6P1/3KPP2/8 w - - bm Nd3; id "Hard-Talkchess-2020.116" ;
8/4nk2/1p3p2/2rp2pp/1P1R1N1P/6P1/3KPP2/8 b - - am Rb5?; id "Hard-Talkchess-2020.117" ;
8/5p2/N1p3p1/3pP1P1/7P/2kP4/Pb6/7K w - - bm h5; id "Hard-Talkchess-2020.119" ;
8/6pp/1K6/N5P1/3N4/8/npn1P3/k7 w - - bm Nab3+; id "Hard-Talkchess-2020.121" ;
8/8/4kpp1/3p1b2/p6P/2B5/6P1/6K1 b - - bm Bh3; id "Hard-Talkchess-2020.122" ;
8/8/p2k1p2/1p1p3p/1P1P3p/P3NPP1/5K2/1b6 w - - bm Ng2; id "Hard-Talkchess-2020.125" ;
8/bp4Pk/4KB2/R6p/2pNp1P1/p7/3p1Pnq/2r5 w - - bm Nc6; id "Hard-Talkchess-2020.126" ;
8/p3N3/1n3N2/2n3pP/pkP5/8/3P4/K7 b - - bm Nxc4; id "Hard-Talkchess-2020.127" ;
8/p7/qkpN1p2/8/1B1P4/PP3K2/5P2/8 w - - bm Ba5+; id "Hard-Talkchess-2020.129" ;
N7/8/2KQ2rp/6k1/3p3p/2p4P/4PP2/5N2 w - - bm f4+; id "Hard-Talkchess-2020.130" ;
Nq3n1k/8/P1p2Npp/2Kp3R/pp6/n3p3/8/4Q3 w - - bm Nc7; id "Hard-Talkchess-2020.131" ;
br1r2k1/5pp1/R6p/2pN4/P1P1q3/2P1p1P1/P3P2P/3RQ1K1 b - - bm Qxc4; id "Hard-Talkchess-2020.132" ;
k7/p1pR4/1p3p2/2P2rpB/PbP4p/2N1p2p/KP6/8 w - - bm Bf3+; id "Hard-Talkchess-2020.133" ;
n1QBq1k1/5p1p/5KP1/p7/8/8/8/8 w - - bm Bc7; id "Hard-Talkchess-2020.135" ;
q7/7R/k7/1p6/1p6/1P2B3/7K/8 w - - bm Bd4; id "Hard-Talkchess-2020.140" ;
r1b1qk1r/pn3pp1/1p2p3/3pP1Bp/1bPN4/4Q1R1/P2N1PP1/R5K1 w - - bm Bf6; id "Hard-Talkchess-2020.144" ;
r1b1qr1k/2p3pp/4p3/1pb1PpN1/pn3N1P/8/PPP1QPP1/2KR3R w - - bm Rd8; id "Hard-Talkchess-2020.146" ;
r1b1qr1k/2p3pp/4p3/1pb1PpN1/pn3N1P/P7/1PP1QPP1/2KR3R w - - bm Rd8; id "Hard-Talkchess-2020.147" ;
r1b2rk1/pp3ppp/1n2p3/3pP3/2P2B2/b1PB1qP1/P1Q1NP1P/1K1R3R w - - bm Nd4; id "Hard-Talkchess-2020.153" ;
r1b3k1/ppp1q1pp/2n1p3/3pP2P/8/2NB2Q1/PPP3P1/2K2R2 w - - bm Bg6; id "Hard-Talkchess-2020.155" ;
r1b3k1/ppppn1pp/4n1q1/8/5P2/2N1B3/PPP3QP/3R1RK1 w - - bm f5; id "Hard-Talkchess-2020.156" ;
r1bq1b1r/pp1pp1pp/2n1k3/8/4nQ2/N1p1BN1P/PP3PP1/R3K2R w KQ - bm Nb5; id "Hard-Talkchess-2020.158" ;
r1bq1rk1/1p1nbppp/p3p3/2ppP3/5B1P/2PBP3/PP1N1PP1/R2QK2R w - - bm Bxh7+; id "Hard-Talkchess-2020.159" ;
r1bq1rk1/pp2b2p/2p1pppQ/8/1n1PN2P/3B1N2/PPP2PP1/2KR3R w - - bm Neg5; id "Hard-Talkchess-2020.160" ;
r1br2k1/1p1nqppp/p1p1pn2/3p4/1bPP4/PPN1PN2/2BB1PPP/R2Q1RK1 b - - am Bxa3; id "Hard-Talkchess-2020.164" ;
r1n2N1k/2n2K1p/3pp3/5Pp1/b5R1/8/1PPP4/8 w - - bm Ng6+; id "Hard-Talkchess-2020.166" ;
r1qn1rk1/p1pp1ppp/1p2p2b/1P2P3/P7/R2B1N2/1P4PP/3Q1R1K w - - bm Bxh7+; id "Hard-Talkchess-2020.169" ;
r2q1r2/1b2bpkp/n3p1p1/2ppP1P1/p6R/1PN1BQR1/NPP2P1P/4K3 w - - bm Qf6+; id "Hard-Talkchess-2020.170" ;
r2q1r2/1b2bpkp/p3p1p1/2ppP1P1/7R/1PN1BQR1/1PP2P1P/4K3 w - - bm Qf6+; id "Hard-Talkchess-2020.171" ;
r2qrbk1/1b3p2/3p2pB/1p1P1N2/1np1P3/5NRP/1P3PP1/1B1Qn1K1 w - - bm N3h4; id "Hard-Talkchess-2020.177" ;
r2r2k1/pqp1bppp/1pn1pn2/8/2NP1B2/2N1P1P1/PPQ2P1P/R4RK1 b - - bm Rxd4; id "Hard-Talkchess-2020.179" ;
r3kb1r/4Pp2/pn3P2/1pp3B1/2p5/2N3P1/PP3P1P/3RKB1b w - - bm h4; id "Hard-Talkchess-2020.181" ;
r3r1k1/1b1n1pbp/pq1p2p1/1pp1P3/3P1B2/nP1B1NNP/P4PP1/R2QR1K1 w - - bm Nh5; id "Hard-Talkchess-2020.182" ;
r3r1k1/1b1nbp1p/1qn1p3/1p1pPp2/p2P4/P2BNN2/1P1Q1BPP/R4RK1 w - - bm Ng4; id "Hard-Talkchess-2020.183" ;
r3r1k1/pp1q1p2/2p2npb/PPPp1bnp/3PpN2/2N1P1PP/1R1B1PBK/3Q1R2 b - - bm Bg4; id "Hard-Talkchess-2020.184" ;
r3r1k1/pp1q1p2/2p2npb/PPPp4/3Pp3/2NNPpP1/1R1B1P1K/3Q3R b - - bm Kg7; id "Hard-Talkchess-2020.185" ;
r3r2k/1pq2pp1/4b2p/3pP3/p1nB3P/P2B1RQ1/1PP3P1/3R3K w - - bm Rf6; id "Hard-Talkchess-2020.186" ;
r4rk1/1bq1bppp/p1npp3/2nB1NP1/1p2P3/2N1B3/PPP1QP1P/2KR2R1 w - - bm Qh5; id "Hard-Talkchess-2020.190" ;
r4rk1/4bppp/bq2p3/npnpP3/p2B1P2/P1PB1N2/1P2QNPP/R4RK1 w - - bm Bxh7+; id "Hard-Talkchess-2020.191" ;
r5k1/6b1/2Nq4/2pP1p2/p1P1pPr1/Pp6/3R2PQ/1K3R2 b - - bm e3; id "Hard-Talkchess-2020.194" ;
r5k1/p1pb2bp/3p3r/P1pPp1p1/2B1Pq2/1R2QPp1/1P4PP/5RBK b - - bm Rxh2+; id "Hard-Talkchess-2020.195" ;
r5rk/1bq1bpp1/1p1ppn1p/pP5P/2P1P3/P1N2P2/1B1Q1P2/1K1R1BR1 w - - bm Nd5; id "Hard-Talkchess-2020.196" ;
r7/1QP1N1Kp/pn2P1b1/Nnk2p2/7p/p4BP1/1rPPp2q/8 w - - bm Nd5; id "Hard-Talkchess-2020.198" ;
r7/1q1r1p1k/3p1Qpp/pbpP4/1nB1P1P1/1P3NBP/5P1K/4R3 w - - bm Bf4; id "Hard-Talkchess-2020.200" ;
rn2kr2/1pp1b1p1/4p3/1Pp1P2p/p1P1NP1P/P7/1B4P1/3RR1K1 w - - bm g3; id "Hard-Talkchess-2020.203" ;
rnb2rk1/1pq1bppp/p3p3/2npP1P1/3N1P2/2NBB3/PPP4P/R2QK2R w KQ - bm Bxh7+; id "Hard-Talkchess-2020.208" ;
rnbq1rk1/p3bp2/2p1p1p1/1p1nP1P1/2pP1P2/2N5/PP4P1/RBBQK2R w KQ - bm Bd2; id "Hard-Talkchess-2020.209" ;
rnbq3r/pppp4/3b1pkp/5p2/2BP4/4P3/PPP2PPP/RN1QK2R w KQ - bm Qh5+; id "Hard-Talkchess-2020.210" ;
rnbqk2r/p4p2/2p1p3/1p2N1pp/PbpPn2P/2N1P1B1/1P3PP1/R2QKB1R w KQkq - bm Qf3; id "Hard-Talkchess-2020.211" ;
rqn2rk1/1p2ppb1/p1b3pp/2R1P1N1/8/4BB1Q/3R1PPP/6K1 w - - bm Nxf7; id "Hard-Talkchess-2020.213" ;
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ImNotStockfish
Posts: 50
Joined: Tue Sep 14, 2021 12:29 am
Full name: .

Re: Questionable positions in the Hard-Talkchess-2020 set

Post by ImNotStockfish »

Are these really good?

Code: Select all

3rqbk1/2p3p1/b6p/Q1p5/2N1PP2/1P1P2P1/2P4P/5R1K b - - bm Bc8; id "Hard-Talkchess-2020.065" ;
r2r2k1/pqp1bppp/1pn1pn2/8/2NP1B2/2N1P1P1/PPQ2P1P/R4RK1 b - - bm Rxd4; id "Hard-Talkchess-2020.179" ;
r3kb1r/4Pp2/pn3P2/1pp3B1/2p5/2N3P1/PP3P1P/3RKB1b w - - bm h4; id "Hard-Talkchess-2020.181" ;
rn2kr2/1pp1b1p1/4p3/1Pp1P2p/p1P1NP1P/P7/1B4P1/3RR1K1 w - - bm g3; id "Hard-Talkchess-2020.203" ;
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Eelco de Groot
Posts: 4565
Joined: Sun Mar 12, 2006 2:40 am
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Re: Questionable positions in the Hard-Talkchess-2020 set

Post by Eelco de Groot »

ImNotStockfish wrote: ↑Thu May 18, 2023 10:46 am Are these really good?

Code: Select all

3rqbk1/2p3p1/b6p/Q1p5/2N1PP2/1P1P2P1/2P4P/5R1K b - - bm Bc8; id "Hard-Talkchess-2020.065" ;
r2r2k1/pqp1bppp/1pn1pn2/8/2NP1B2/2N1P1P1/PPQ2P1P/R4RK1 b - - bm Rxd4; id "Hard-Talkchess-2020.179" ;
r3kb1r/4Pp2/pn3P2/1pp3B1/2p5/2N3P1/PP3P1P/3RKB1b w - - bm h4; id "Hard-Talkchess-2020.181" ;
rn2kr2/1pp1b1p1/4p3/1Pp1P2p/p1P1NP1P/P7/1B4P1/3RR1K1 w - - bm g3; id "Hard-Talkchess-2020.203" ;
I tried the last one with Crystal 6 PMT. g3 is a good move but there is no large advantage and because of the position, it can apparently, Crystal shows, also be played as a second move or possibly even a bit later?


Thanks for Crystal Joseph! And Jean Paul, for the compiles :)


[fen]rn2kr2/1pp1b1p1/4p3/1Pp1P2p/p1P1NP1P/P7/1B4P1/3RR1K1 w - -[/fen]



45 71:41 +0.53 1.Tf1 Pd7 2.g3 Pb6 3.Tc1 Td8 4.Tf3 Kf7 5.Kf2 g6 6.Ke2 Td7 7.Tc2 Tfd8 8.Lc1 Td4 9.Pd2 T4d7 10.Tfc3 Td4 11.Pf1 Td1 12.Td2 T8xd2+ 13.Pxd2 Tg1 14.Kf2 (3.379.710.060) 785
45 71:41 +0.52 1.g3 Pd7 2.Tc1 Pb6 3.Tc2 Kf7 4.Kf1 Tfd8 5.Pf2 Ke8 6.Te3 Tac8 7.Ke2 c6 8.bxc6 Txc6 9.Pe4 Kf7 10.Tf3 Pc8 11.Lc3 Td7 12.Tc1 b5 13.cxb5 Tb6 14.La1 (3.379.710.060) 785
45 71:41 +0.25 1.Pf6+ gxf6 2.exf6 Ld6 3.Td5 Pd7 4.Txe6+ Kf7 5.Tdxd6 cxd6 6.Te7+ Kg6 7.Tg7+ Kf5 8.Txd7 b6 9.Kf2 Tad8 10.Th7 Th8 11.Tc7 Tc8 12.Te7 The8 13.Tg7 Kxf4 14.g4 (3.379.710.060) 785
45 71:41 +0.13 1.Lc1 Pd7 2.Le3 Lxh4 3.g3 Le7 4.Kg2 g6 5.Th1 Td8 6.Td3 Tf7 7.Td2 Tf8 8.Thd1 b6 9.Th1 Tf7 10.Pc3 Ta8 11.Tdd1 Th7 12.Lc1 Tf7 13.Tdg1 Th7 14.Te1 (3.379.710.060) 785
45 71:41 +0.06 1.b6 cxb6 2.g3 Pc6 3.Lc3 Pd4 4.Lxd4 cxd4 5.Td3 Kf7 6.Tb1 Lc5 7.Pd6+ Lxd6 8.exd6 Tac8 9.Txd4 Tc6 10.d7 Td8 11.Kf2 Ke7 12.Ke3 Txd7 13.Txd7+ Kxd7 14.Tb4 (3.379.710.060) 785
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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ImNotStockfish
Posts: 50
Joined: Tue Sep 14, 2021 12:29 am
Full name: .

Re: Questionable positions in the Hard-Talkchess-2020 set

Post by ImNotStockfish »

ImNotStockfish wrote: ↑Thu May 18, 2023 10:46 am Are these really good?

Code: Select all

3rqbk1/2p3p1/b6p/Q1p5/2N1PP2/1P1P2P1/2P4P/5R1K b - - bm Bc8; id "Hard-Talkchess-2020.065" ;
r2r2k1/pqp1bppp/1pn1pn2/8/2NP1B2/2N1P1P1/PPQ2P1P/R4RK1 b - - bm Rxd4; id "Hard-Talkchess-2020.179" ;
r3kb1r/4Pp2/pn3P2/1pp3B1/2p5/2N3P1/PP3P1P/3RKB1b w - - bm h4; id "Hard-Talkchess-2020.181" ;
rn2kr2/1pp1b1p1/4p3/1Pp1P2p/p1P1NP1P/P7/1B4P1/3RR1K1 w - - bm g3; id "Hard-Talkchess-2020.203" ;
This one ended up being fine (winning). Still doubtful about the other 3.

Code: Select all

r2r2k1/pqp1bppp/1pn1pn2/8/2NP1B2/2N1P1P1/PPQ2P1P/R4RK1 b - - bm Rxd4; id "Hard-Talkchess-2020.179" ;
I will also add these 3 to the list:

Code: Select all

1r1q1rk1/1p2b2p/pN6/P1pP1bp1/5p2/2B2Q2/1P4PP/R4RK1 w - - bm g4; id "Hard-Talkchess-2020.011" ;
1r3rk1/5p1p/p2pb1p1/3Np1P1/2pRPR2/qP2Q1N1/P1PK3P/8 w - - bm Nf5; id "Hard-Talkchess-2020.019" ;
1r4k1/pb3p1p/r1p1p1p1/2p1P3/P1P2P2/1PB5/2K3PP/5R2 w - - bm a5; id "Hard-Talkchess-2020.020" ;
11: g4 is best but Rad1 (and maybe Rae1) seem winning too
19: Nf5 is best but Nf6+ seems winning too
20: I get pretty high evals with fairly deep Crystal 6 analysis and its supposed to be a draw

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info depth 48 seldepth 102 multipv 1 score cp 322 wdl 1000 0 0 nodes 16335324462 nps 5551287 hashfull 1000 tbhits 1850411 time 2942619 pv h7h6 h2h4 b8f8 f1f3 b7c8 g2g3 g8g7 g3g4 g6g5 h4g5 h6g5 f4g5 g7g6 c3d2 f8h8 f3d3 h8h2 c2d1 h2d2 d1d2 a6a5 d3d8 a5a2 d2c3 c8a6 d8g8 g6h7 g8a8 h7g7 g5g6 g7g6 a8a7 g6g5 a7f7 g5g4 c3d3 a2b2 d3c3 b2h2 f7f6 a6c8 f6f8 h2h3 c3b2 c8d7 f8f7 h3h2 b2c1 d7e8 f7f6 h2h8 f6e6 g4f5 e6e7 f5f4 e7e6 e8d7 e6d6 h8h7 e5e6 d7e8 d6d1 f4e5 e6e7 e5e6
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Vinvin
Posts: 5228
Joined: Thu Mar 09, 2006 9:40 am
Full name: Vincent Lejeune

Re: Questionable positions in the Hard-Talkchess-2020 set

Post by Vinvin »

ImNotStockfish wrote: ↑Thu May 18, 2023 10:46 am Are these really good?

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3rqbk1/2p3p1/b6p/Q1p5/2N1PP2/1P1P2P1/2P4P/5R1K b - - bm Bc8; id "Hard-Talkchess-2020.065" ;
r2r2k1/pqp1bppp/1pn1pn2/8/2NP1B2/2N1P1P1/PPQ2P1P/R4RK1 b - - bm Rxd4; id "Hard-Talkchess-2020.179" ;
r3kb1r/4Pp2/pn3P2/1pp3B1/2p5/2N3P1/PP3P1P/3RKB1b w - - bm h4; id "Hard-Talkchess-2020.181" ;
rn2kr2/1pp1b1p1/4p3/1Pp1P2p/p1P1NP1P/P7/1B4P1/3RR1K1 w - - bm g3; id "Hard-Talkchess-2020.203" ;
I analysed these 4 positions with recent engines : Crystal 6 and latest SF with 3 best moves.

1) 3rqbk1/2p3p1/b6p/Q1p5/2N1PP2/1P1P2P1/2P4P/5R1K b - - bm Bc8; id "Hard-Talkchess-2020.065" ;
Bc8 is the best but Qc6 is very close.

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Crystal 6 PMT avx2:
...
 34/55	02:09	 2.787.008k	21.520k	-0,10	1. ... Bxc4 2.bxc4 Qc6 3.Kg2 Ra8 4.Qc3 g6 5.Ra1 Bg7 6.Rxa8+ Qxa8 7.Qd2 Kh7 8.Qd1 Bc3 9.Qg4 Qa4 10.Kh3 Qa1 11.Qe2 Bf6 12.e5 Be7 13.Kg2 Qa4 14.h4 h5 15.Qd1 Kg7 16.Qb1 Qa5 17.Qc1 Qb4 18.Kf1 Bd8 19.Qa1 Qd2 20.Qa4 Be7 21.Qe8 Qd1+ 22.Kf2 Qxc2+ 23.Ke3 Qc1+ 24.Ke2 Qb2+ 25.Kf3 Bf8
 34/55	02:09	 2.787.008k	21.520k	-0,32	1. ... Qc6 2.Ne5 Qb7 3.Ra1 Ra8 4.Kg1 Bd6 5.Nc4 Qc6 6.Kg2 Bb7 7.Qc3 Bc8 8.Kf2 Bg4 9.Ra5 Kh7 10.Rxa8 Qxa8 11.Qa5 Qc8 12.Ne3 Bd7 13.h4 Be8 14.Kg2 Qd7 15.Qa8 Be7 16.Qd5 h5 17.Qe5 Bf7 18.Kf2 Bf8 19.Qa1 g6 20.Qa5 Be6
 34/55	02:09	 2.787.008k	21.520k	-0,38	1. ... Bc8 2.f5 Bd6 3.Kg2 Qe7 4.Qe1 Re8 5.g4 Qg5 6.h3 Kh7 7.Qc1 Qh4 8.Qe1 Qe7 9.Qf2 g6 10.e5 Bxe5 11.fxg6+ Kh8 12.Nxe5 Qxe5 13.Qf4 Bb7+ 14.Kg1 Qg7 15.Qf2 c4 16.Qa7 Bc6 17.bxc4 Re7 18.Qc5 Be8 19.Rf7 Rxf7 20.gxf7 Qxf7 21.Qe3 Kh7 22.Qe4+ Kg8 23.Kg2 Kf8 24.Qe3 Qf6

Stockfish_23050720_x64_avx2:
...
 44/51	02:36	 3.541.678k	22.627k	-0,07	1. ... Bxc4 2.bxc4 Qc6 3.Kg2 Kh7 4.Kg1 g6 5.e5 h5 6.Qd2 Bg7 7.Qe2 Rb8 8.h4 Qe6 9.Kh2 Rb2 10.Rf2 Rb1 11.Rf1 Rxf1 12.Qxf1 Qd7 13.Qe2 Bf8 14.Qf3 c6 15.Qe2 Kg7 16.Qe4 Qe6 17.Qg2 Kh7 18.Qf3 Be7 19.Qg2 Kh8 20.Qh1 Qd7 21.Qf3
 44/55	02:36	 3.541.678k	22.627k	-0,26	1. ... Qc6 2.Ne5 Qf6 3.Nc4 Bc8 4.Kg2 Qe7 5.Ne5 Qd6 6.Nc4 Qd7 7.f5 Re8 8.Qc3 Qe7 9.h4 Bb7 10.Nd2 Qf6 11.Qxf6 gxf6 12.Ra1 Ra8 13.Rxa8 Bxa8 14.Nc4 Bc6 15.Kf3 Kg7 16.Ne3 Be8 17.Ng2 Bf7 18.Ke3 Bd6 19.Nf4 Be5 20.g4 Bd4+ 21.Ke2 Bc3 22.Ke3 Be5 23.Ne2
 44/57	02:36	 3.541.678k	22.627k	-0,32	1. ... Bc8 2.Kg2 Bd6 3.f5 Qe7 4.Qe1 Ba6 5.Nxd6 cxd6 6.f6 gxf6 7.Qa1 Bb5 8.Qxf6 Qxf6 9.Rxf6 Kg7 10.Rf2 Bd7 11.Kf3 Re8 12.Ke3 d5 13.c3 dxe4 14.dxe4 Rb8 15.Ra2 Be6 16.Ra7+ Kg6 17.Rc7 Rxb3 18.Rxc5 Rb1 19.Kf4 Kf6 20.Rh5 Rf1+ 21.Ke3 Kg6 22.Rc5 Rh1 23.h4 Re1+ 24.Kf4 Kf6 25.Rh5 Rf1+ 26.Ke3 Kg7 27.Rb5 Re1+ 28.Kf4
2) r2r2k1/pqp1bppp/1pn1pn2/8/2NP1B2/2N1P1P1/PPQ2P1P/R4RK1 b - - bm Rxd4; id "Hard-Talkchess-2020.179" ;
Rxd4 is clearly the best move.

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Crystal 6 PMT avx2:
...
 32/57	01:52	 2.241.755k	19.949k	-0,24	1. ... h6 2.Rfc1 Nb4 3.Qe2 Rac8 4.Be5 Nd7 5.h4 Nxe5 6.Nxe5 c5 7.Rd1 cxd4 8.exd4 Bf6 9.Rac1 Qa8 10.Nf3 Kf8 11.a3 Nd5 12.Ne5 Nxc3 13.Rxc3 Rxc3 14.bxc3 Qb7 15.Rd3 Kg8 16.Ng4 Be7 17.Ne5 Bd6 18.c4 Qc8 19.Rc3 Bxe5
 32/48	01:52	 2.241.755k	19.949k	-0,32	1. ... Rac8 2.Rfc1 Nb4 3.Qe2 c5 4.Be5 Ne8 5.dxc5 Bxc5 6.a4 Nc6 7.g4 Nxe5 8.Nxe5 Bd6 9.Qf3 Qc7 10.Ne2 Bc5 11.Qg3 Qb8 12.Nf3 Qb7 13.g5 Be7 14.h4 Rc5 15.Qg2 Nd6 16.Nfd4 Rdc8 17.Qxb7 Nxb7 18.Kg2 Rxc1
 32/66	01:52	 2.241.755k	19.949k	-1,16	1. ... Rxd4 2.exd4 Nxd4 3.Qa4 Nf3+ 4.Kh1 e5 5.Ne3 exf4 6.Ng2 a5 7.a3 Bd6 8.Rad1 Rf8 9.Nb5 Ng4 10.Nxd6 cxd6 11.Nxf4 b5 12.Qxa5 Nfxh2+ 13.Kg1 Nf3+ 14.Kg2 Nd2+ 15.Kh3 Nxf1 16.Rxf1 Qd7 17.Kg2 Qc6+ 18.Kg1 Ne5 19.Qc3 Qxc3 20.bxc3 Nc4 21.Rb1 Nxa3 22.Rd1 Rd8 23.Ne2 g6 24.Ra1 Ra8 25.Nd4 Ra5 26.Nb3 Ra4 27.Nd4 Nc4 28.Rb1 h5 29.Nxb5 Kf8 30.Rb4 Rxb4 31.cxb4 Ke7 32.Nd4 Kd7 33.f4

Stockfish_23050720_x64_avx2:
...
 34/48	00:32	 681.035k	20.658k	+0,27	0. ... h6 1.Rfc1 b5 2.Ne5 Nxe5 3.Bxe5 Nd7 4.Qe4 c6 5.a3 a5 6.g4 Rac8 7.Bg3 Qb6 8.Qf3 c5 9.Qe2 cxd4 10.exd4 Bg5 11.Rd1 b4 12.axb4 axb4 13.Ne4 Be7 14.d5 exd5 15.Rxd5 Nf8 16.Rxd8 Rxd8 17.Rd1 Ne6 18.Rxd8+ Qxd8 19.Qf3 Qd4 20.b3 Bf8 21.Kg2 Qd7 22.h4 Qd8
 35/49	00:32	 681.035k	20.658k	+0,32	0. ... Rac8 1.Ne4 Nxe4 2.Qxe4 Na5 3.Qxb7 Nxb7 4.h4 c5 5.Rac1 f6 6.Rfd1 Kf7 7.b3 Rd7 8.Nd2 Rcd8 9.Nf3 cxd4 10.exd4 Bd6 11.Bd2 Ba3 12.Rc6 Nd6 13.Bc1 Bxc1 14.Rdxc1 Nf5 15.Rc7 Ke7 16.Kf1 Rxc7 17.Rxc7+ Rd7 18.Rc4 h5 19.Ke2 Kd8
 35/69	00:32	 681.035k	20.658k	+1,20	0. ... Rxd4 1.exd4 Nxd4 2.Qa4 Nf3+ 3.Kh1 e5 4.Ne3 exf4 5.Ng2 a5 6.a3 Bd6 7.Rad1 Rf8 8.Qc4 Ng4 9.Qe4 Qxe4 10.Nxe4 Nfxh2 11.Rfe1 fxg3 12.fxg3 Be5 13.Re2 g6 14.Rd3 Nf1 15.Kg1 f5 16.Ng5 Nxg3 17.Rxe5 Nxe5 18.Rxg3 Rd8 19.Nf4 Rd1+ 20.Kf2 Rd6 21.Nge6 c5 22.Nc7 Ng4+ 23.Ke2 Kf7 24.Nfd5 h5 25.a4 Nf6 26.Nxf6 Rxf6 27.Rh3 Rd6 28.Na8 Kg7 29.Kf1 f4 30.Kf2 Kf6 31.Rb3 g5 32.Rxb6 Rxb6 33.Nxb6 g4 34.Nd7+ Kf5
3) r3kb1r/4Pp2/pn3P2/1pp3B1/2p5/2N3P1/PP3P1P/3RKB1b w - - bm h4; id "Hard-Talkchess-2020.181" ;
h4 is the only top move above 0.00

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Crystal 6 PMT avx2:
...
 39/13	00:25	 552.803k	21.957k	 0,00	1.exf8B Kxf8 2.Be3 Ke8 3.h4 b4 4.Nb1 Rh5 5.Rd6 Nc8 6.Rd1
 39/13	00:25	 552.803k	21.957k	 0,00	1.exf8Q+ Kxf8 2.Be3 Ke8 3.h4 b4 4.Nb1 Rh5 5.Rd6 Nc8 6.Rd1
 39/77	00:25	 552.803k	21.957k	+0,31	1.h4 b4 2.Rd6 Bxe7 3.fxe7 Nd7 4.Nd5 Bxd5 5.Rxd5 f6 6.Be3 Kxe7 7.Bxc4 a5 8.b3 Rhd8 9.Ke2 Ne5 10.Bxc5+ Ke8 11.Rxd8+ Rxd8 12.Be6 Nc6 13.Ke3 Rd1 14.Kf4 Re1 15.Bd5 Ne7 16.Be4 Kf7 17.h5 Ng8 18.Bd4 Re2 19.Bg6+ Kg7 20.Bb1 Re1 21.Bd3 Rd1 22.Ke3 Rg1 23.Kf3 Rd1 24.Ke2 Rg1 25.Bc2 Nh6 26.Bd1 Rh1 27.Kd2 Nf7 28.Bg4 Nd6 29.Bf3 Rg1 30.Kc2 Re1 31.Bb6 Ra1 32.Kb2 Rf1 33.a4 bxa3+ 34.Kxa3 Nf7 35.Be3 Rg1 36.Bd5 Rd1 37.Bc6 Ra1+ 38.Kb2

Stockfish_23050720_x64_avx2:
...
 52/12	02:48	 3.542.073k	21.072k	 0,00	1.exf8B Kxf8 2.Be3 Rh5 3.Rd6 Rb8 4.Be2 Re5 5.Rd2 Rc8 6.Rd6
 52/12	02:48	 3.542.073k	21.072k	 0,00	1.exf8Q+ Kxf8 2.Be3 Rh5 3.Rd6 Rb8 4.Be2 Re5 5.Rd2 Ra8 6.Rd6
 52/72	02:48	 3.542.073k	21.072k	+0,39	1.h4 b4 2.Rd6 Bxe7 3.fxe7 Nd7 4.Nd5 Bxd5 5.Rxd5 f6 6.Be3 a5 7.Bxc4 Kxe7 8.b3 Rhd8 9.Ke2 Ne5 10.Bxc5+ Ke8 11.Rxd8+ Rxd8 12.Be6 Nc6 13.Ke3 Rd1 14.Kf4 Re1 15.Bd5 Ne7 16.Be4 Kf7 17.h5 Ng8 18.Bd4 Re2 19.Bg6+ Kg7 20.g4 Rd2 21.Ke3 Rxa2 22.g5 a4 23.Be4 axb3 24.h6+ Nxh6 25.Bxf6+ Kf7 26.Bd4 Ng4+ 27.Kf3 Rd2 28.g6+ Ke7 29.g7 Nh6 30.Be3 Rd1 31.Bxh6 Rg1 32.Bd3 Ke8 33.Be3 Rxg7 34.Bd4 Rg1 35.Ke4 Re1+ 36.Kd5
4) rn2kr2/1pp1b1p1/4p3/1Pp1P2p/p1P1NP1P/P7/1B4P1/3RR1K1 w - - bm g3; id "Hard-Talkchess-2020.203" ;
Rf1 is sometimes close to g3. May be it's also good.

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Crystal 6 PMT avx2:
...
 42/53	12:36	 15.580.298k	20.608k	 0,00	1.b6 cxb6 2.g3 Nc6 3.Bc3 Nd4 4.Bxd4 cxd4 5.Rd3 Bc5 6.Kf2 Rc8 7.Rb1 Kf7 8.Ng5+ Ke7 9.Ne4
 43/89	12:36	 15.580.298k	20.608k	+0,50	1.Rf1 Nd7 2.g3 Nb6 3.Rc1 Rd8 4.Rf3 Kf7 5.Kf2 Rd7 6.Ke2 Rfd8 7.f5 exf5 8.Rxf5+ Ke6 9.Rxh5 Rd3 10.Rh8 Rxh8 11.Kxd3 Rf8 12.Ke3 Nd7 13.Re1 Nxe5 14.Bxe5 Kxe5 15.Rd1 Ke6 16.h5 b6 17.g4 Rf7 18.Rh1 Ke5 19.Re1 Rf8 20.Re2 Rd8 21.Nd2 Kf6 22.Rf2+ Kg5 23.Ne4+ Kxg4 24.Rg2+ Kh4 25.Rxg7 Bf8 26.Rxc7 Bh6+ 27.Kf2 Rd3 28.Rc6
 43/78	12:36	 15.580.298k	20.608k	+0,71	1.g3 Nd7 2.Rc1 Nb6 3.Kf1 Kf7 4.Ke2 Rfd8 5.Rf1 Kg6 6.Rc2 Rab8 7.Rf3 Rd7 8.Nf2 Re8 9.Nd3 Bf8 10.Bc1 Nc8 11.Rd2 Nb6 12.Nb2 Ra8 13.Rxd7 Nxd7 14.Rc3 Be7 15.Bd2 Kf7 16.Rd3 Nb6 17.Kf3 Ke8 18.Be3 g6 19.Bf2 Rc8 20.Be1 Ra8 21.Rd2 Kf7 22.Rd1 Ke8 23.Bf2 Rc8 24.g4


Stockfish_23050720_x64_avx2:
...
---------------------------------------------------------------------------
 54/66	21:30	 26.698.465k	20.685k	 0,00	1.Bc1 Nd7 2.g3 Nb6 3.Rd2 Nxc4 4.Rc2 Na5 5.Nxc5 Bxc5+ 6.Rxc5 c6 7.bxc6 Nxc6 8.Be3 Rd8 9.Rb1 Rf7 10.f5 Rd3 11.fxe6 Rf3 12.Rxb7 Rxg3+ 13.Kf2 Rdxe3 14.Rxc6 Rgf3+ 15.Kg2 Rg3+ 16.Kh2 Rh3+ 17.Kg1 Rhg3+ 18.Kf2
 54/81	21:30	 26.698.465k	20.685k	+0,35	1.Rf1 Nd7 2.g3 Nb6 3.Rc1 Rd8 4.Rf3 Kf7 5.Kf2 Rd7 6.Ke2 Rfd8 7.Rc2 Kg6 8.Nd2 Nc8 9.Bc3 Bf8 10.Rc1 Kf5 11.Re3 Nb6 12.Ba5 Nc8 13.Rg1 Nb6 14.Rf3 Be7 15.Rc1 Bf8 16.Nf1 Kg6 17.Bxb6 cxb6 18.Re3 Be7 19.Rc2 Kf5 20.Rd2 Rd4 21.Rc3 Bf8 22.Ne3+ Ke4 23.Rdc2 R4d7 24.Nf1 Kf5 25.Nd2 Kg4 26.Re3 Be7 27.Ne4 Rd4 28.Nf2+ Kf5 29.Rd3 R8d7 30.Rdc3 Kg6 31.Re3
 54/78	21:30	 26.698.465k	20.685k	+0,55	1.g3 Nd7 2.Rc1 Nb6 3.Kf1 Kf7 4.Re3 Kg6 5.Ke2 Rfd8 6.Rec3 Rac8 7.Rf3 Rd7 8.Nf2 Rcd8 9.Rd3 Rxd3 10.Nxd3 Rc8 11.Rc2 c6 12.bxc6 Rxc6 13.Bc1 Nc8 14.Nb2 Ra6 15.Rd2 Nb6 16.Rd1 Kf7 17.Be3 Ke8 18.Rb1 Ra8 19.Kf3 g6 20.g4 Kf7 21.Rd1 Rc8 22.Bf2 Rh8 23.Rd3 hxg4+ 24.Kxg4 Ra8 25.Rd2 Rh8 26.Rd1 Rc8 27.Be3 Ra8 28.Rc1 Rd8
---------------------------------------------------------------------------
 55/59	25:19	 31.238.127k	20.556k	 0,00	1.Bc1 Nd7 2.g3 Nb6 3.Rd2 Nxc4 4.Rc2 Na5 5.Nxc5 Bxc5+ 6.Rxc5 c6 7.bxc6 Nxc6 8.Be3 Rf7 9.Rd1 Rd7 10.Rxd7 Kxd7 11.Rb5 Kc7 12.Bb6+ Kd7 13.Bf2 Kc7 14.g4 g6 15.Bb6+ Kd7 16.Be3 Kc7 17.Bb6+
 55/92	25:19	 31.238.127k	20.556k	+0,35	1.Rf1 Nd7 2.g3 Nb6 3.Rc1 Rd8 4.Rf3 Kf7 5.Kf1 Rd7 6.f5 exf5 7.Rxf5+ Kg6 8.Rxf8 Bxf8 9.Ke2 Be7 10.Nf2 Rd8 11.Nd3 Rg8 12.Ke3 Kf7 13.Kf3 g5 14.hxg5 Rxg5 15.Rc2 Rf5+ 16.Nf4 Ke8 17.Ba1 Rf8 18.Ke4 Rg8 19.Nxh5 Rg4+ 20.Nf4 Rxg3 21.Bb2 Rg5 22.Rc3 Rg1 23.Bc1 Kf7 24.Be3 Re1 25.Kf5 Rf1 26.Rc2 Bf8 27.Ke4 Re1 28.e6+ Ke8 29.Nd3 Rh1 30.Bf4 Bd6 31.Bxd6 cxd6 32.Nf4 Re1+ 33.Kf5 Ke7 34.Ng6+ Kd8 35.Rc3 Rf1+ 36.Nf4 d5 37.Rg3 dxc4 38.Rg8+ Ke7 39.Rg7+ Ke8
 55/86	25:19	 31.238.127k	20.556k	+0,81	1.g3 Nd7 2.Re3 Nb6 3.Rc3 Kf7 4.Bc1 Rad8 5.Rxd8 Rxd8 6.Be3 Nd7 7.Kf1 Kg6 8.Kf2 Kf5 9.Kf3 Nb6 10.Nf2 Rd7 11.Rc1 Bf8 12.Rc2 Nc8 13.Ke2 Rd8 14.Rc1 Nb6 15.Bd2 Nc8 16.Bc3 b6 17.Rg1 Kg6 18.Rd1 Be7 19.Rxd8 Bxd8 20.Ne4 Na7 21.Kf3 c6 22.bxc6 Nxc6 23.Nd6 Bc7 24.Ke4 Ne7 25.Bd2 Bd8 26.Be1 Bc7
---------------------------------------------------------------------------
 55/59	26:53	 33.088.425k	20.501k	 0,00	1.Bc1 Nd7 2.g3 Nb6 3.Rd2 Nxc4 4.Rc2 Na5 5.Nxc5 Bxc5+ 6.Rxc5 c6 7.bxc6 Nxc6 8.Be3 Rf7 9.Rd1 Rd7 10.Rxd7 Kxd7 11.Rb5 Kc7 12.Bb6+ Kd7 13.Bf2 Kc7 14.g4 g6 15.Bb6+ Kd7 16.Be3 Kc7 17.Bb6+
 56/93	26:53	 33.088.425k	20.501k	+0,26	1.Rf1 Nd7 2.g3 Nb6 3.Rc1 Rd8 4.Rf3 Kf7 5.Kf1 Rd7 6.f5 exf5 7.Rxf5+ Kg6 8.Rxf8 Bxf8 9.Ke2 Be7 10.Nf2 Rd8 11.Nd3 Rg8 12.Ke3 Kf7 13.Rc2 g5 14.hxg5 Rxg5 15.Kf3 Rf5+ 16.Nf4 Ke8 17.Ba1 Rf8 18.Ke4 Rg8 19.Nxh5 Rg4+ 20.Nf4 Rxg3 21.Bb2 Rg5 22.Rc3 Rg1 23.Bc1 Kf7 24.Rc2 Re1+ 25.Kf5 Rf1 26.Be3 Bf8 27.Ke4 Re1 28.Nd3 Rh1 29.Rc3 Be7 30.Bf2 Rh3 31.Rc1 Bg5 32.Rg1 Nxc4 33.Rxg5 Nd2+ 34.Kf5 Rf3+ 35.Nf4 Rxf2 36.Kg4
 56/73	26:53	 33.088.425k	20.501k	+0,61	1.g3 Nd7 2.Re3 Nb6 3.Rc3 Kf7 4.Bc1 Rfd8 5.Rxd8 Rxd8 6.Be3 Rd1+ 7.Kf2 Rb1 8.Ke2 Rb2+ 9.Kd3 Nd7 10.Bc1 Rh2 11.Bd2 Kg6 12.Ke3 Rh1 13.Rc1 Rxc1 14.Bxc1 Nb6 15.Nd2 Nc8 16.Kf3 Bd8 17.Bb2 Kf7 18.Bc3 g6 19.Ke3 Ke7 20.Ne4 b6 21.Be1 c6 22.Nc3 Na7 23.Bf2 Kd7 24.Ke2 Ke8 25.Kd3 Kd7 26.Ke3 Ke7 27.Kd2 Kd7 28.Be3 Kc7 29.Kd3 Kd7 30.Bd2 Kc7 31.Ke4 Kd7 32.Ke3 Kc7 33.Kd3 Kd7 34.bxc6+ Nxc6 35.Nxa4
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