Hello:
I found by chance a very nice problem of 2008 by Albert Mijailovich Belyavsky:
https://www.arves.org/arves/index.php/e ... -1934-2018
[pgn][Event ""]
[Site ""]
[Date "2008"]
[Round ""]
[White "Albert Belyavsky"]
[Black ""]
[Result "1-0"]
[SetUp "1"]
[FEN "3q1k2/p2r1p1R/2p1n2K/N2rp3/8/5PP1/8/1Q1N4 w - - 0 1"]
[PlyCount "23"]
[EventDate "2008"]
1. Rh8+ Ke7 2. Nxc6+ (2. Rxd8 $2 Nxd8) (2. Qb4+ $2 c5 3. Qh4+ Kd6 4. Nb7+ Kc7 5. Nxd8 Rxd8 6. Rxd8 (6. Rh7 Rxd1 7. Rxf7+ R1d7 8. Kg6 Rxf7 9. Kxf7 Nd4 10. Qe4 Kd6) 6... Rxd8 7. Qf6 Rxd1 8. Qxf7+ Rd7 9. Qf6 Rd5) 2... Kf6 (2... Kd6 3. Nxd8 Nxd8 4. Ne3) 3. Rg8 $1 (3. Nxd8 $2 Rxd1) (3. Rxd8 $2 Nxd8 (3... Rxd1 4. Qxd1) 4. Ne3 Nxc6 5. Qf5+ Ke7 6. Nxd5+ Rxd5 7. Kg7 Nd8 8. Qf6+ Ke8 9. Kg8 (9. Qa6 Rc5 10. Qxa7 Rc6 11. Qa4 Ke7 12. Qb4+ Rd6 13. g4 Ne6+ 14. Kh6 (14. Kg8 Nf8 15. Qc5 Nd7) 14... Nd4+ 15. Kh5 Nxf3 16. Qb7+ Kf8 17. Qxf3 Rg6) 9... a5 10. g4 a4 11. Qa6 (11. g5 a3 12. Qa6 a2 13. Qxa2 Rd6) 11... Rd4 12. Qb5+ Ke7 13. Qxe5+ Ne6 14. g5 Rf4) 3... Qxg8 (3... Rxd1 4. Rg6+ fxg6 5. Qxg6#) 4. Qf5+ $1 Kxf5 5. Ne7+ $1 Rxe7 6. Ne3+ Kf6 7. Nxd5+ Kf5 8. Nxe7+ Kf6 9. Nxg8+ Kf5 10. Ne7+ Kf6 11. Nd5+ Kf5 12. g4# 1-0[/pgn]
There is a variant without the black pawn on a7. The move 3.- Rg8!! is the deflection itself. Black is not complelled to play the natural-looking 3.- ..., Qxg8 that leads to a fireworks checkmate, but anyway 3.- Rg8!! has got higher evals than 3.- Rxd8 for SF 18 after playing it with Multi-PV disabled; otherwise, SF gets stuck with 3.- Rxd8:
[d]3q3R/p2r1p2/2N1nk1K/3rp3/8/5PP1/8/1Q1N4 w - - 1 3
My open question is: can any engine play 3.- Rg8!! with Multi-PV disabled and without external help? I would be satisfied even if analysing after 2.- Kf6, let alone from the start of the problem... even for the variant without the a7-pawn. I expect that SF finally cracks this hard nut with more cores, hash and time. Thank you in advance.
Regards from Spain.
Ajedrecista.
Belyavsky's deflection.
Moderator: Ras
-
Ajedrecista
- Posts: 2208
- Joined: Wed Jul 13, 2011 9:04 pm
- Location: Madrid, Spain.
-
Eelco de Groot
- Posts: 4702
- Joined: Sun Mar 12, 2006 2:40 am
- Full name: Eelco de Groot
Re: Belyavsky's deflection.
Hi Ajedrecista, thanks for all the chess stuff from you in here! I have not really looked deeply at the study, just tried to see if some engine can solve it.
I tried two engines and they both solved it given the position after 2...Kf6.
So if SF gets stuck here it just shows it could be improved for analysis I think, especially if allowed multiple threads. For instance a simple setup with the cluster version of Stockfish on very low level hardware would be a great solver, in theory, because the Multi PV, as far as I understand, comes naturally to the cluster architecture, (the hash is split between the different computers etc. ) But I don't know anyone who does that, at least not here?
Well anyway, you can use the Multi PV and the engine I tried first uses some of that code too as we know, so it really does not qualify as not Multi PV... Lately I think Eduard has removed the randomization code in his latest work after the exchange with Corchess developer on Open Chess. So I have not tried that one, maybe the randomization is removed but the multi PV inside is still there. Fine, as long as you know that when using it.
But this was (pretty old) SUN SE I tried, modified SF from Eduard Nemeth :
[d]3q3R/p2r1p2/2N1nk1K/3rp3/8/5PP1/8/1Q1N4 w - -
But also there is Rebel EAS 3.0 I tried next, beats Stockfish 18 effortlessy then 
Just nine seconds with single threaded use on an old Dell computer.
I tried two engines and they both solved it given the position after 2...Kf6.
So if SF gets stuck here it just shows it could be improved for analysis I think, especially if allowed multiple threads. For instance a simple setup with the cluster version of Stockfish on very low level hardware would be a great solver, in theory, because the Multi PV, as far as I understand, comes naturally to the cluster architecture, (the hash is split between the different computers etc. ) But I don't know anyone who does that, at least not here?
Well anyway, you can use the Multi PV and the engine I tried first uses some of that code too as we know, so it really does not qualify as not Multi PV... Lately I think Eduard has removed the randomization code in his latest work after the exchange with Corchess developer on Open Chess. So I have not tried that one, maybe the randomization is removed but the multi PV inside is still there. Fine, as long as you know that when using it.
But this was (pretty old) SUN SE I tried, modified SF from Eduard Nemeth :
[d]3q3R/p2r1p2/2N1nk1K/3rp3/8/5PP1/8/1Q1N4 w - -
Code: Select all
3q3R/p2r1p2/2N1nk1K/3rp3/8/5PP1/8/1Q1N4 w - -
Engine: Sun SE (1024 MB)
gemaakt door E. Nemeth, the Stockfish developers (se
21/40 0:01 +1.11 3.Txd8 Pxd8 4.Pc3 Pxc6 5.Pxd5+ Txd5
6.Db7 Td6 7.Dc7 Te6 8.g4 a5 9.Dd7 a4
10.g5+ Kf5+ 11.Kh5 Pe7 12.Dxa4 e4
13.fxe4+ Txe4 14.Da2 Te6 15.Df2+ Ke5
16.Dxf7 (886.569) 576
22/47 0:02 +1.09 3.Txd8 Pxd8 4.Pc3 Pxc6 5.Pxd5+ Txd5
6.Db7 Td6 7.Dc7 Te6 8.g4 a6 9.Dd7 a5
10.g5+ Kf5+ 11.Kh5 Pe7 12.De8 Kf4
13.Dxf7+ Pf5 14.g6 a4 15.Df8 Td6
16.Dc8 (1.738.846) 612
23/47 0:03 +1.01-- 3.Txd8 Pxd8 (2.089.974) 613
23/47 0:04 +1.04 3.Txd8 Pxd8 4.Pe3 Pxc6 5.Df5+ Ke7
6.Pxd5+ Txd5 7.Kg7 Pd8 8.Dg5+ Ke8
9.Kg8 Pc6 10.Df6 Pd8 11.Df5 a5
12.De4 Td6 13.Dxe5+ Te6 14.Db5+ Ke7
15.Dc5+ Ke8 16.Df8+ (2.499.391) 616
24/40 0:04 +1.04 3.Txd8 Pxd8 4.Pe3 Pxc6 5.Df5+ Ke7
6.Pxd5+ Txd5 7.Kg7 Pd8 8.Dg5+ Ke8
9.Kg8 Pc6 10.Df6 Pd8 11.Df5 a5
12.De4 Td6 13.Dxe5+ Te6 14.Db5+ Ke7
15.Dc5+ Ke8 16.Df8+ (2.882.704) 617
25/40 0:05 +1.12++ 3.Txd8 (3.409.651) 617
25/40 0:05 +1.12 3.Txd8 Pxd8 4.Pe3 Pxc6 5.Df5+ Ke7
6.Pxd5+ Txd5 7.Kg7 Pd8 8.Dg5+ Ke8
9.Kg8 a5 10.f4 a4 11.f5 a3 12.De3 a2
13.Da7 e4 14.g4 Td2 15.f6 Pc6
16.Dxf7+ (3.501.596) 619
26/40 0:06 +1.19++ 3.Txd8 (4.045.551) 618
26/40 0:06 +1.28++ 3.Txd8 (4.240.917) 621
26/40 0:07 +1.39++ 3.Txd8 (4.598.518) 623
26/40 0:07 +1.28 3.Txd8 Pxd8 4.Pe3 Pxc6 5.Df5+ Ke7
6.Pxd5+ Txd5 7.Kg7 Pd8 8.Dg5+ Ke8
9.Kg8 a5 10.f4 a4 11.f5 a3 12.Dg4 Td4
13.De2 Kd7 14.Da6 Tg4+ 15.Kf8 Txg3
16.Da7+ (4.643.214) 624
27/39 0:09 +1.27-- 3.Txd8 Pxd8 (6.117.108) 619
27/39 0:12 +1.33++ 3.Txd8 (7.565.908) 618
27/48 0:13 +1.46++ 3.Txd8 (8.427.490) 623
27/48 0:13 +1.29 3.Txd8 Pxd8 4.Pe3 Pxc6 5.Df5+ Ke7
6.Pxd5+ Txd5 7.Kg7 Pd8 8.Dg5+ Ke8
9.Kg8 Pb7 10.De3 Ke7 11.f4 Pc5 12.g4 f6
13.g5 fxg5 14.fxg5 Pe6 15.g6 Td4
16.Dxe5 (8.501.223) 623
28/47 0:16 +1.42++ 3.Txd8 (10.112.296) 626
28/47 0:16 +1.32 3.Txd8 Pxd8 4.Pe3 Pxc6 5.Df5+ Ke7
6.Pxd5+ Txd5 7.Kg7 Pd8 8.Dg5+ Ke8
9.Kg8 Pb7 10.De3 Ke7 11.f4 Pc5 12.g4 f6
13.g5 fxg5 14.fxg5 Pe6 15.g6 Td4
16.Dxe5 (10.262.821) 626
29/47 0:20 +1.44++ 3.Txd8 (12.723.606) 628
29/47 0:22 +1.52 3.Txd8 Pxd8 4.Pe3 Pxc6 5.Df5+ Ke7
6.Pxd5+ Txd5 7.Kg7 Pd8 8.Dg5+ Ke8
9.Kg8 Pb7 10.De3 Ke7 11.f4 Pc5 12.g4 f6
13.g5 fxg5 14.fxg5 Pe6 15.g6 Td4
16.Dxe5 (14.294.825) 633
30/47 0:24 +1.59++ 3.Tg8 (15.615.754) 635
30/47 0:24 +1.69++ 3.Tg8 (15.678.490) 635
30/47 0:24 +1.83++ 3.Tg8 (15.744.419) 635
30/47 0:24 +2.01++ 3.Tg8 (15.818.087) 634
30/47 0:25 +2.26++ 3.Tg8 (15.918.471) 635
30/47 0:25 +2.58++ 3.Tg8 (16.055.132) 635
30/47 0:25 +3.01++ 3.Tg8 (16.330.039) 634
30/47 0:26 +3.58++ 3.Tg8 (16.596.557) 634
30/47 0:26 +3.84 3.Tg8 Pg7 4.Txd8 Txd8 5.Pxd8 Txd8
6.Kh7 Pe6 7.f4 exf4 8.gxf4 Td4 9.Pe3 Txf4
10.Pd5+ Ke5 11.Pxf4 Pg5+ 12.Kg8 (16.951.207) 634
31/25 0:28 +3.88++ 3.Tg8 (18.170.248) 628
31/36 0:31 +4.09++ 3.Tg8 (19.604.964) 626
31/48 0:43 +4.35 3.Tg8 Pg7 4.Txd8 Txd8 5.Pxd8 Txd8
6.Kh7 Pe6 7.f4 Pf8+ 8.Kh6 Pe6
9.fxe5+ Kxe5 10.Db2+ Pd4 11.Kh7 f5
12.Pf2 Kf6 13.Ph3 Td7+ 14.Kh6 Td8
15.Pg5 f4 16.gxf4 (27.383.068) 631
32/48 0:51 +4.35 3.Tg8 Pg7 4.Txd8 Txd8 5.Pxd8 Txd8
6.Kh7 Pe6 7.f4 Pf8+ 8.Kh6 Pe6
9.fxe5+ Kxe5 10.Db2+ Pd4 11.Kh7 f5
12.Pf2 Kf6 13.Ph3 Td7+ 14.Kh6 Td8
15.Pg5 f4 16.gxf4 (32.337.736) 627
beste zet: Th8-g8 tijd: 0:51.813 min n/s: 627.077 nodes: 32.337.736 Code: Select all
3q3R/p2r1p2/2N1nk1K/3rp3/8/5PP1/8/1Q1N4 w - -
Engine: Rebel EAS 3.0 (1024 MB)
gemaakt door Ed Schroder & Chris Whittington (C) 200
22/39 0:01 +1.68++ 3.Txd8 (948.819) 609
22/48 0:01 +1.66++ 3.Txd8 (1.164.512) 610
22/31 0:01 +1.59 3.Txd8 Pxd8 4.Pe3 Pxc6 5.Df5+ Ke7
6.Pxd5+ Txd5 7.Kg7 Pd8 8.Dg5+ Kd7
9.Dg4+ Kd6 10.Dh4 Pc6 11.Kxf7 Td4
12.Dh6+ Kc5 13.Dc1+ Kb5 14.Df1+ Kc5
15.Da6 e4 16.f4 (1.178.418) 611
23/43 0:02 +1.59++ 3.Txd8 (1.422.476) 609
23/40 0:02 +1.58 3.Txd8 Pxd8 4.Pe3 Pxc6 5.Df5+ Ke7
6.Pxd5+ Txd5 7.Kg7 Pd8 8.Dg5+ Kd7
9.Dg4+ Kd6 10.Db4+ Ke6 11.Dc4 Kd6
12.Da6+ Ke7 13.Df6+ Ke8 14.Kg8 a5
15.Df5 a4 16.De4 (1.430.437) 610
24/41 0:03 +1.60 3.Txd8 Pxd8 4.Pe3 Pxc6 5.Df5+ Ke7
6.Pxd5+ Txd5 7.Kg7 Pd8 8.Dg5+ Kd7
9.Dg4+ Kd6 10.Db4+ Ke6 11.Db3 f5
12.g4 fxg4 13.fxg4 Pc6 14.g5 Pe7
15.Dc4 e4 16.Dxe4+ (1.846.782) 602
25/47 0:03 +1.71++ 3.Txd8 (2.326.375) 598
25/38 0:03 +1.71 3.Txd8 Pxd8 4.Pe3 Pxc6 5.Df5+ Ke7
6.Pxd5+ Txd5 7.Kg7 Pd8 8.Dg5+ Kd7
9.Dg4+ Kd6 10.Db4+ Ke6 11.Db3 f5
12.g4 fxg4 13.fxg4 Pc6 14.Dc4 Pd4
15.Dc8+ Td7+ 16.Kf8 (2.377.365) 598
26/48 0:07 +1.60++ 3.Txd8 (4.339.455) 605
26/43 0:08 +1.46 3.Txd8 Pxd8 4.Pe3 Pxc6 5.Df5+ Ke7
6.Pxd5+ Txd5 7.Kg7 Pd8 8.Dg5+ Kd7
9.Dg4+ Kc7 10.Dc4+ Kd6 11.Db4+ Ke6
12.g4 Td4 13.Dc5 Kd7 14.Dxe5 Tf4
15.Kg8 Pe6 16.Dd5+ (4.984.910) 614
26/43 0:09 +1.83++ 3.Tg8 (5.965.757) 607
26/35 0:10 +2.17++ 3.Tg8 (6.180.298) 607
26/31 0:10 +2.69++ 3.Tg8 (6.451.180) 607
26/39 0:11 +3.45++ 3.Tg8 (6.866.899) 606
26/45 0:13 +4.60++ 3.Tg8 (8.118.815) 599
26/45 0:24 +4.68 3.Tg8 Td3 4.Txd8 Td2 5.Pf2 Txf2
6.Dh1 Pxd8 7.Dh4+ Ke6 8.Pxd8+ Txd8
9.Dxd8 Txf3 10.Dc8+ Kd6 11.Da6+ Kc5
12.De2 Tc3 13.g4 a5 14.Kg7 a4
15.Kxf7 a3 (14.265.988) 587
27/44 0:31 +4.68++ 3.Tg8 Td3 (18.220.142) 587
27/46 0:37 +4.83++ 3.Tg8 (22.129.325) 590
27/51 0:48 +4.93 3.Tg8 Pg7 4.Txd8 Txd8 5.Pxd8 Txd8
6.Kh7 Pe6 7.f4 exf4 8.gxf4 Txd1
9.Dxd1 Kf5 10.Df3 Pxf4 11.Kg7 Ke5
12.De3+ Kf5 13.Kxf7 a6 14.Dd4 a5
15.Ke7 a4 16.Dxa4 (29.134.650) 597
28/58 1:04 +5.03++ 3.Tg8 Td3 (38.228.721) 595
28/52 1:07 +4.88 3.Tg8 Pg7 4.Txd8 Txd8 5.Pxd8 Txd8
6.Kh7 Pe6 7.f4 exf4 8.gxf4 Pxf4
9.Pe3 Pe6 10.Db2+ Td4 11.Pc2 Ke5
12.Kg8 Kd5 13.Db3+ Kd6 14.Db8+ Kc5
15.Dc8+ Kd6 16.Da6+ (40.565.983) 599
29/57 1:21 +4.88++ 3.Tg8 (49.179.935) 602
29/49 1:23 +5.03++ 3.Tg8 (50.260.694) 601
29/53 1:23 +4.92 3.Tg8 Pg7 4.Txd8 Txd8 5.Pxd8 Txd8
6.Kh7 Pe6 7.f4 exf4 8.gxf4 Pxf4
9.Pe3 Pe6 10.Db2+ Td4 11.Pc2 Ke5
12.Kg8 Kd5 13.Db5+ Pc5 14.Pe3+ Ke4
15.Pg4 Pd3 16.Dc6+ (50.557.261) 602
30/66 1:34 +5.02++ 3.Tg8 (57.179.873) 602
30/46 1:38 +4.97++ 3.Tg8 (59.482.314) 602
30/56 2:01 +5.10 3.Tg8 Pg7 4.Txd8 Txd8 5.Pxd8 Txd8
6.Kh7 Pe6 7.f4 exf4 8.gxf4 Pxf4
9.Pe3 Pe6 10.Db2+ Td4 11.Pc2 Ke5
12.Kg8 Kd5 13.Da2+ Ke5 14.Pxd4 Pxd4
15.Kxf7 Ke4 16.Kg6 (73.487.906) 602
beste zet: Th8-g8 tijd: 2:04.672 min n/s: 602.997 nodes: 73.487.906
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
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
-
peter
- Posts: 3553
- Joined: Sat Feb 16, 2008 7:38 am
- Full name: Peter Martan
Re: Belyavsky's deflection.
Sting (of courseAjedrecista wrote: ↑Sun Mar 01, 2026 12:46 pm My open question is: can any engine play 3.- Rg8!! with Multi-PV disabled and without external help? I
) has 3.Rg8 in output at once, but also e.g. CorChess, here single thread (4.3 GHz) with 1G hash:Code: Select all
13: Belyavsky=A - (+4705.24h6f8) C 1-0, 1.p Korolkov-100 MT 2007 2008
3q1k2/p2r1p1R/2p1n2K/N2rp3/8/5PP1/8/1Q1N4 w - - 0 1
Analysis by CorChess 5 dev-20260212-16475cc0:
1.Th8+ Ke7 2.Db4+ T7d6 3.Sxc6+ Kd7 4.Sxd8 Sxd8+ 5.Kg5 Txd1 6.Db5+ Sc6
Weiß steht deutlich besser.
+- (1.71) Tiefe: 10/14 00:00:00
...
1.Th8+ Ke7 2.Sxc6+ Kf6 3.Txd8 Sxd8 4.Se3 Sxc6 5.Df5+ Ke7 6.Sxd5+ Txd5 7.Kg7 Sd8 8.Dg5+ Ke8 9.Dh5 a5 10.f4 a4 11.f5 e4 12.Dg4 Te5 13.Kf6 Sc6 14.Dd1 Ta5 15.Dd6 Ta6 16.Kg7 e3 17.Df8+ Kd7 18.Dxf7+ Kd6 19.De6+ Kc7 20.Df6
Weiß hat entscheidenden Vorteil.
+- (3.40 ++) Tiefe: 37/102 00:00:22 42220kN
1.Th8+ Ke7 2.Sxc6+ Kf6 3.Tg8 Sg7 4.Txd8 Txd8 5.Sxd8 Txd8 6.Kh7 Se6 7.f4 exf4 8.gxf4 Sxf4 9.Se3 Td3 10.Db2+ Ke6 11.Db5 Txe3 12.De8+ Kd5 13.Dxe3 Se6 14.Df3+ Ke5 15.Dc3+ Ke4 16.Db4+ Ke3 17.Da3+ Ke2 18.Dxa7
Weiß steht auf Gewinn.
+- (3.58) Tiefe: 37/102 00:00:24 44933kN
...
1.Th8+ Ke7 2.Sxc6+ Kf6 3.Tg8 Sg7 4.Txd8 Txd8 5.Sxd8 Txd8 6.Kh7 Se6 7.f4 Sf8+ 8.Kh6 Se6 9.fxe5+ Kxe5 10.Db2+ Ke4 11.De2+ Kd4 12.Kh7 Td7 13.Sf2 Kc5 14.Se4+ Kb6 15.Db2+ Kc6 16.Dc3+ Kb6 17.Kh6 a5 18.Db2+ Ka6 19.De5 Tc7 20.Sd6 Tc5 21.Db2 a4 22.Db4
Weiß steht klar auf Gewinn.
+- (4.40 ++) Tiefe: 39/69 00:00:55 117MNPeter.
-
gordonr
- Posts: 240
- Joined: Thu Aug 06, 2009 8:04 pm
- Location: UK
Re: Belyavsky's deflection.
Is there a draw/fortress in the following line? Latest Stockfish appers to think Whtie can win here?! I currently think it's unclear.
[pgn][Event "?"]
[Site "?"]
[Date "2008.??.??"]
[Round "?"]
[White "Albert Belyavsky"]
[Black "?"]
[Result "1-0"]
[WhiteElo "2000"]
[WhiteFideId "-1"]
[BlackFideId "-1"]
[SetUp "1"]
[FEN "3q1k2/p2r1p1R/2p1n2K/N2rp3/8/5PP1/8/1Q1N4 w - - 0 1"]
[PlyCount "15"]
[GameId "2283215239122955"]
[EventDate "2008.??.??"]
1. Rh8+ Ke7 2. Nxc6+ Kf6 3. Rxd8 $2 Nxd8 4. Ne3 Nxc6 5. Qf5+ Ke7 6. Nxd5+ Rxd5 7. Kg7 Nd8 8. Qg5+ *
[/pgn/[/pgn]
[pgn][Event "?"]
[Site "?"]
[Date "2008.??.??"]
[Round "?"]
[White "Albert Belyavsky"]
[Black "?"]
[Result "1-0"]
[WhiteElo "2000"]
[WhiteFideId "-1"]
[BlackFideId "-1"]
[SetUp "1"]
[FEN "3q1k2/p2r1p1R/2p1n2K/N2rp3/8/5PP1/8/1Q1N4 w - - 0 1"]
[PlyCount "15"]
[GameId "2283215239122955"]
[EventDate "2008.??.??"]
1. Rh8+ Ke7 2. Nxc6+ Kf6 3. Rxd8 $2 Nxd8 4. Ne3 Nxc6 5. Qf5+ Ke7 6. Nxd5+ Rxd5 7. Kg7 Nd8 8. Qg5+ *
[/pgn/[/pgn]
-
peter
- Posts: 3553
- Joined: Sat Feb 16, 2008 7:38 am
- Full name: Peter Martan
Re: Belyavsky's deflection.
The sideline is given in HHdb- .pgn of the problem till 7th move of Black,gordonr wrote: ↑Mon Mar 02, 2026 12:33 pm Is there a draw/fortress in the following line? Latest Stockfish appers to think Whtie can win here?! I currently think it's unclear.
[pgn][Event "?"]
[Site "?"]
[Date "2008.??.??"]
[Round "?"]
[White "Albert Belyavsky"]
[Black "?"]
[Result "1-0"]
[WhiteElo "2000"]
[WhiteFideId "-1"]
[BlackFideId "-1"]
[SetUp "1"]
[FEN "3q1k2/p2r1p1R/2p1n2K/N2rp3/8/5PP1/8/1Q1N4 w - - 0 1"]
[PlyCount "15"]
[GameId "2283215239122955"]
[EventDate "2008.??.??"]
1. Rh8+ Ke7 2. Nxc6+ Kf6 3. Rxd8 $2 Nxd8 4. Ne3 Nxc6 5. Qf5+ Ke7 6. Nxd5+ Rxd5 7. Kg7 Nd8 8. Qg5+ *
[/pgn/[/pgn]
[pgn][Event "1.p Korolkov-100 MT 2007"]
[Site "; Zadachy i Etyudy no.44 14-"]
[Date "2008.04.14"]
[Round "?"]
[White "Belyavsky=A"]
[Black "(+4705.24h6f8) C"]
[Result "1-0"]
[WhiteFideId "-1"]
[BlackFideId "-1"]
[SetUp "1"]
[FEN "3q1k2/p2r1p1R/2p1n2K/N2rp3/8/5PP1/8/1Q1N4 w - - 0 1"]
[PlyCount "23"]
[GameId "2283220155061029"]
[EventDate "2008.04.14"]
{(EG#17020); source: Zadachy i Etyudy no.44 14-4-2008; (c): Belyavsky=A (Zadachy i Etyudy no.46 25-12-2008)} 1. Rh8+ Ke7 2. Nxc6+ (2. Rxd8 $2 Nxd8) (2. Qb4+ $2 c5 3. Qh4+ Kd6 4. Nb7+ Kc7 5. Nxd8 Rxd8 6. Rxd8 (6. Rh7 Rxd1 7. Rxf7+ R1d7 8. Kg6 Rxf7 9. Kxf7 Nd4 10. Qe4 Kd6) 6... Rxd8 7. Qf6 Rxd1 8. Qxf7+ Rd7 9. Qf6 Rd5) 2... Kf6 (2... Kd6 3. Nxd8 Nxd8 4. Ne3) 3. Rg8 $1 (3. Nxd8 $2 Rxd1) (3. Rxd8 $2 Nxd8 (3... Rxd1 4. Qxd1) 4. Ne3 Nxc6 5. Qf5+ Ke7 6. Nxd5+ Rxd5 7. Kg7 Nd8 8. Qf6+ Ke8 9. Kg8 (9. Qa6 Rc5 10. Qxa7 Rc6 11. Qa4 Ke7 12. Qb4+ Rd6 13. g4 Ne6+ 14. Kh6 (14. Kg8 Nf8 15. Qc5 Nd7) 14... Nd4+ 15. Kh5 Nxf3 16. Qb7+ Kf8 17. Qxf3 Rg6) 9... a5 10. g4 a4 11. Qa6 (11. g5 a3 12. Qa6 a2 13. Qxa2 Rd6) 11... Rd4 12. Qb5+ Ke7 13. Qxe5+ Ne6 14. g5 Rf4) 3... Qxg8 (3... Rxd1 4. Rg6+ fxg6 5. Qxg6#) 4. Qf5+ $1 Kxf5 5. Ne7+ $1 Rxe7 6. Ne3+ Kf6 7. Nxd5+ Kf5 8. Nxe7+ Kf6 9. Nxg8+ Kf5 10. Ne7+ Kf6 11. Nd5+ Kf5 12. g4# 1-0
[/pgn]
but there is 8.Qf6(?) =, your 8.Qg5 instead should win indeed, even if not as quickly and not as beautifully as main line does.
CorChess (because it solves single thread with 3.Rg8! in output in 24" from starting position too, see output above) after some Forward- Backward after 8.Qg5:
[d]3n4/p3kpK1/8/3rp1Q1/8/5PP1/8/8 b - - 0 1
Analysis by CorChess 5 dev-20260212-16475cc0:
8...Kd7 9.Dg4+ Ke7 10.Dh4+ Kd7 11.Kf8 Sc6 12.Dc4 Td4 13.Dxf7+ Kd6 14.Kg7 a5 15.Df8+ Kd7 16.g4 Tf4 17.Dc5 Sd4 18.Dxe5 Se6+ 19.Kg6 a4 20.g5 Sf8+ 21.Kh6 Se6 22.Db5+ Kd6 23.Db6+
Tiefe: 30/76 00:01:32 3234MN, tb=26744586
Weiß steht auf Gewinn.
+- (3.96)
On the other hand, the main line in database is to be made some longer with 3...Rd3! instead of 3...Qxg8(!?), after this one deviation
(1. Rh8+ Ke7 2. Nxc6+ Kf6 3.Rg8 Rd3
[d]3q2R1/p2r1p2/2N1nk1K/4p3/8/3r1PP1/8/1Q1N4 w - - 0 1
Analysis by CorChess 5 dev-20260212-16475cc0:
4.Txd8 Txd8 5.Sxd8 Txd8 6.Kh5 Sg7+ 7.Kg4 Se6 8.Se3 Ke7 9.Dh7 Tf8 10.Sf5+ Kd7 11.Sh6 Ke8 12.Df5 a5 13.Dxe5 a4 14.Db5+ Ke7 15.f4 Kf6 16.De5+ Ke7 17.Sf5+ Kd7 18.Dd6+ Kc8 19.Dc6+ Kb8
Tiefe: 24/74 00:01:23 4011MN, tb=20833681
Weiß steht klar auf Gewinn.
+- (6.88)
Peter.
-
Jouni
- Posts: 3844
- Joined: Wed Mar 08, 2006 8:15 pm
- Full name: Jouni Uski
Re: Belyavsky's deflection.
Nice position! PlentyChess and Reckless see win in seconds:
Analysis by Reckless 0.9.0:
1.Rh8+ Ke7 2.Nxc6+ Kf6 3.Rg8 Ng7 4.Rxd8 Rxd8 5.Nxd8 Rxd8 6.Kh7 Ne6 7.f4 Nf8+ 8.Kh6 Ne6 9.fxe5+ Kxe5 10.Qa1+ Kd5 11.Ne3+ Ke4 12.Ng4 a5 13.Qf6 Rf8 14.Ne5 Nd8 15.Nc4 Rg8 16.Nd6+ Ke3 17.Nf5+ Kf2
+- (6.16) Depth: 21/50 00:00:03 16687kN, tb=33836
Analysis by PlentyChess 7.0.37:
1.Rh8+ Ke7 2.Nxc6+ Kf6 3.Rg8 Ng7 4.Rxd8 Rxd8 5.Nxd8 Rxd8 6.Kh7 Ne6 7.f4 Nf8+ 8.Kh6 Ne6 9.fxe5+ Kxe5 10.Qa1+ Rd4 11.Ne3 Ke4 12.Ng4 Kf5 13.Nh2 Rd6 14.Qf1+ Ke4 15.Ng4 Nd4+ 16.Kh7 f5 17.Qf4+ Kd5 18.Ne3+ Ke6 19.Qh6+ Kd7 20.Qg7+ Kc8 21.Qe5 Rd7+ 22.Kg8
+- (5.39) Depth: 36/74 00:00:10 48317kN, tb=167607
Analysis by Reckless 0.9.0:
1.Rh8+ Ke7 2.Nxc6+ Kf6 3.Rg8 Ng7 4.Rxd8 Rxd8 5.Nxd8 Rxd8 6.Kh7 Ne6 7.f4 Nf8+ 8.Kh6 Ne6 9.fxe5+ Kxe5 10.Qa1+ Kd5 11.Ne3+ Ke4 12.Ng4 a5 13.Qf6 Rf8 14.Ne5 Nd8 15.Nc4 Rg8 16.Nd6+ Ke3 17.Nf5+ Kf2
+- (6.16) Depth: 21/50 00:00:03 16687kN, tb=33836
Analysis by PlentyChess 7.0.37:
1.Rh8+ Ke7 2.Nxc6+ Kf6 3.Rg8 Ng7 4.Rxd8 Rxd8 5.Nxd8 Rxd8 6.Kh7 Ne6 7.f4 Nf8+ 8.Kh6 Ne6 9.fxe5+ Kxe5 10.Qa1+ Rd4 11.Ne3 Ke4 12.Ng4 Kf5 13.Nh2 Rd6 14.Qf1+ Ke4 15.Ng4 Nd4+ 16.Kh7 f5 17.Qf4+ Kd5 18.Ne3+ Ke6 19.Qh6+ Kd7 20.Qg7+ Kc8 21.Qe5 Rd7+ 22.Kg8
+- (5.39) Depth: 36/74 00:00:10 48317kN, tb=167607
Jouni
-
acase
- Posts: 1004
- Joined: Wed Mar 15, 2006 1:14 am
- Location: Columbus, Ohio USA
- Full name: Andrew R Case
Re: Belyavsky's deflection.
Hi Jesus,
To answer your open question, Stockfish 18 using 64 threads and a 32GB hashtable does indeed see the 3.Rg8! move after 44 seconds and ShashChess 33.1 takes less than 1 second on the same computer:
To answer your open question, Stockfish 18 using 64 threads and a 32GB hashtable does indeed see the 3.Rg8! move after 44 seconds and ShashChess 33.1 takes less than 1 second on the same computer:
Code: Select all
FEN: 3q1k2/p2r1p1R/2p1n2K/N2rp3/8/5PP1/8/1Q1N4 w - - 0 1
Stockfish_18_x64_bmi2:
Available processors: 0-35:64-99
Using 64 threads with NUMA node thread binding: 32/36:32/36
NNUE evaluation using nn-c288c895ea92.nnue (125MiB, (102384, 1024, 15, 32, 1))
NNUE evaluation using nn-37f18f62d772.nnue (6MiB, (22528, 128, 15, 32, 1))
Network replica 1: Shared memory.
Network replica 2: Shared memory.
1/9 00:00 6k 464k +2.19 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-d6 3.Nc6xd8 Ne6xd8
2/9 00:00 12k 1,030k +1.61 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8
3/8 00:00 23k 1,744k +1.50 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8
4/8 00:00 26k 2,010k +1.44 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6
5/10 00:00 29k 2,197k +1.27 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8
6/8 00:00 30k 2,344k +1.27 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8
7/11 00:00 46k 3,311k +1.15 1.Rh7-h8+ Kf8-e7 2.Qb1-b4+ Ke7-f6 3.Qb4-h4+ Kf6-f5 4.Rh8xd8 Rd7xd8
8/15 00:00 83k 5,199k +1.42 1.Rh7-h8+ Kf8-e7 2.Qb1-b4+ Rd7-d6 3.Na5xc6+ Ke7-d7 4.Nc6xd8 Ne6xd8+ 5.Kh6-g7
9/37 00:00 659k 19,369k +1.21 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Qb1-f5+ Kf6-e7 6.Ne3xd5+ Rd7xd5 7.Kh6-g7 Nc6-d8 8.Qf5-g5+ Ke7-e8
10/13 00:00 666k 19,576k +1.21 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Qb1-f5+ Kf6-e7 6.Ne3xd5+ Rd7xd5
11/24 00:00 678k 19,358k +1.14 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Qb1-f5+ Kf6-e7 6.Ne3xd5+ Rd7xd5 7.Kh6-g7 Nc6-d8 8.Qf5-g5+ Ke7-e8 9.Qg5-h5 a7-a5 10.f3-f4 a5-a4 11.Qh5-h1 Rd5-a5 12.f4-f5
12/32 00:00 760k 20,007k +1.20 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Qb1-f5+ Kf6-e7 6.Ne3xd5+ Rd7xd5 7.Kh6-g7 Nc6-d8 8.Qf5-g5+ Ke7-e8 9.Qg5-h5 a7-a5 10.f3-f4 Ke8-e7 11.f4-f5 f7-f6 12.Qh5-h1 Rd5-d6
13/40 00:00 1,649k 24,610k +1.15 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Qb1-f5+ Kf6-e7 6.Ne3xd5+ Rd7xd5 7.Kh6-g7 Nc6-d8 8.Qf5-g5+ Ke7-e8 9.Qg5-h5 Rd5-c5 10.Kg7-g8 a7-a5 11.f3-f4 a5-a4 12.f4-f5 e5-e4 13.Qh5-h4 Nd8-c6 14.Qh4xe4+ Nc6-e7+ 15.Kg8-g7 Rc5xf5 16.Qe4xa4+ Ke8-d8 17.Qa4-d4+ Kd8-c7
14/39 00:00 1,855k 25,405k +1.08 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Qb1-f5+ Kf6-e7 6.Ne3xd5+ Rd7xd5 7.Kh6-g7 Nc6-d8 8.Qf5-g5+ Ke7-e8 9.Qg5-h5 Rd5-c5 10.Kg7-g8 Ke8-d7 11.f3-f4 f7-f6 12.Qh5-f5+ Kd7-e7 13.Qf5-h7+ Ke7-d6 14.Qh7-d3+ Kd6-c7 15.Qd3-a3
15/53 00:00 3,776k 27,562k +1.21 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Qb1-f5+ Kf6-e7 6.Ne3xd5+ Rd7xd5 7.Kh6-g7 Nc6-d8 8.Qf5-g5+ Ke7-e8 9.Qg5-h5 Ke8-e7 10.Qh5-h4+ Ke7-e6
16/52 00:00 5,916k 28,171k +1.27 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Qb1-f5+ Kf6-e7 6.Ne3xd5+ Rd7xd5 7.Kh6-g7 Nc6-d8 8.Qf5-g5+ Ke7-d7 9.Qg5-g4+ Kd7-d6
17/47 00:00 7,096k 28,383k +1.30 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Qb1-f5+ Kf6-e7 6.Ne3xd5+ Rd7xd5 7.Kh6-g7 Nc6-d8 8.Qf5-g5+ Ke7-e6 9.Qg5-g4+ Ke6-e7 10.Qg4-h4+ Ke7-d7 11.Kg7-f8 a7-a5 12.g3-g4 a5-a4 13.Qh4-e7+ Kd7-c6 14.Qe7-a3 Rd5-d4 15.Kf8-e8 Nd8-b7 16.Ke8xf7 Nb7-c5 17.g4-g5 Rd4-d3
18/49 00:00 12,178k 29,417k +1.40 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Qb1-f5+ Kf6-e7 6.Ne3xd5+ Rd7xd5 7.Kh6-g7 Nc6-d8 8.Qf5-g5+ Ke7-d7 9.Qg5-g4+ Kd7-c7
19/67 00:00 22,546k 30,509k +1.38 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Qb1-f5+ Kf6-e7 6.Ne3xd5+ Rd7xd5 7.Kh6-g7 Nc6-d8 8.Qf5-g5+ Ke7-d7 9.Qg5-g4+ Kd7-e7 10.Qg4-h4+ Ke7-d7 11.Kg7-f8 a7-a5 12.Qh4-a4+ Kd7-d6 13.Kf8-e8 Nd8-c6 14.Ke8xf7 Rd5-d3 15.Qa4-e4 Rd3-c3 16.f3-f4 a5-a4 17.f4-f5
20/71 00:00 25,656k 30,616k +1.54 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Qb1-f5+ Kf6-e7 6.Ne3xd5+ Rd7xd5 7.Kh6-g7 Nc6-d8 8.Qf5-g5+ Ke7-e8 9.Qg5-h5 Rd5-c5 10.Kg7-g8 a7-a5 11.f3-f4 a5-a4 12.f4-f5 e5-e4 13.Qh5-h4 Rc5-e5 14.Qh4-f6 Re5-a5 15.g3-g4 Ke8-d7 16.Qf6-d4+ Kd7-c7 17.Qd4xe4 a4-a3 18.Qe4-c4+ Kc7-d7 19.Qc4-a2 Kd7-c7 20.Kg8-g7 Kc7-b6 21.f5-f6 Kb6-c6 22.Kg7-f8 Ra5-a7 23.Qa2-c4+ Kc6-b7 24.Qc4-d5+ Kb7-c7
21/84 00:02 94,650k 31,987k +1.82 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Qb1-f5+ Kf6-e7 6.Ne3xd5+ Rd7xd5 7.Kh6-g7 Nc6-d8 8.Qf5-g5+ Ke7-d7 9.Qg5-g4+ Kd7-d6 10.Kg7-f6 Nd8-c6 11.Kf6xf7 Rd5-d4 12.Qg4-g6+ Kd6-d5 13.Qg6-e6+ Kd5-c5 14.Qe6-a2 e5-e4 15.Qa2-c2+ Kc5-d6
22/66 00:03 105,623k 31,910k +1.86 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Qb1-f5+ Kf6-e7 6.Ne3xd5+ Rd7xd5 7.Kh6-g7 Nc6-d8 8.Qf5-g5+ Ke7-e8 9.Qg5-h5 Rd5-d3 10.Kg7-g8 Ke8-e7 11.Qh5-h4+ Ke7-e6 12.Kg8-f8 Rd3-d6 13.Kf8-e8 a7-a5 14.Qh4-c4+ Ke6-f6 15.Qc4-c7 Rd6-d5 16.g3-g4 Kf6-g5 17.Qc7-e7+ Kg5-f4
23/81 00:03 111,223k 31,887k +1.91 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Qb1-f5+ Kf6-e7 6.Ne3xd5+ Rd7xd5 7.Kh6-g7 Nc6-d8 8.Qf5-g5+ Ke7-e8 9.Qg5-h5 a7-a5 10.f3-f4 a5-a4 11.f4-f5 Rd5-d4
24/83 00:04 159,949k 32,157k +2.00 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Qb1-f5+ Kf6-e7 6.Ne3xd5+ Rd7xd5 7.Kh6-g7 Nc6-d8 8.Qf5-g5+ Ke7-e8 9.Qg5-h5 Rd5-c5 10.Kg7-g8 Ke8-d7 11.f3-f4 Kd7-c7 12.Qh5-f3
25/70 00:07 241,899k 32,095k +2.12 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Qb1-f5+ Kf6-e7 6.Ne3xd5+ Rd7xd5 7.Kh6-g7 Nc6-d8 8.Qf5-g5+ Ke7-d7 9.Qg5-g4+ Kd7-d6 10.Kg7-f6 Rd5-d4 11.Qg4-c8 Nd8-c6 12.Qc8-f8+ Kd6-d5 13.Qf8-e8
26/80 00:11 369,432k 32,225k +2.24 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Qb1-f5+ Kf6-e7 6.Ne3xd5+ Rd7xd5 7.Kh6-g7 Nc6-d8 8.Qf5-g5+ Ke7-d7 9.Qg5-g4+ Kd7-d6 10.Kg7-f6 a7-a5 11.Qg4-c8 Nd8-c6 12.Qc8-f8+ Kd6-d7 13.Qf8xf7+ Kd7-d6 14.g3-g4 Rd5-d3 15.Qf7-f8+ Kd6-d5
27/83 00:20 680,771k 32,526k +2.37 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Qb1-f5+ Kf6-e7 6.Ne3xd5+ Rd7xd5 7.Kh6-g7 Nc6-d8 8.Qf5-g5+ Ke7-e8 9.Qg5-h5 Ke8-e7 10.Qh5-h4+ Ke7-d7 11.Kg7-f8 a7-a5 12.g3-g4 Nd8-c6 13.g4-g5 Rd5-d4 14.Qh4-h3+ Kd7-d6 15.Kf8-e8
28/85 00:25 828,680k 32,985k +2.40 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Qb1-f5+ Kf6-e7 6.Ne3xd5+ Rd7xd5 7.Kh6-g7 Nc6-d8 8.Qf5-g5+ Ke7-e8 9.Qg5-h5 Ke8-e7 10.Qh5-h4+ Ke7-d7 11.Kg7-f8 a7-a5 12.g3-g4 Nd8-c6 13.g4-g5 Rd5-d4 14.Qh4-h3+ Kd7-d6 15.Kf8xf7 Rd4-e4
29/94 00:27 922,576k 33,532k +2.40 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Qb1-f5+ Kf6-e7 6.Ne3xd5+ Rd7xd5 7.Kh6-g7 Nc6-d8 8.Qf5-g5+ Ke7-e8 9.Qg5-h5 Ke8-e7 10.Qh5-h4+ Ke7-d7 11.Kg7-f8 a7-a5 12.g3-g4 Nd8-c6 13.g4-g5 Rd5-d4 14.Qh4-h3+ Kd7-c7
30/107+ 00:36 1,243,095k 34,116k +2.63 1.Rh7-h8+
30/107+ 00:36 1,244,589k 34,116k +2.89 1.Rh7-h8+
30/107+ 00:39 1,339,847k 34,112k +3.67 1.Rh7-h8+
[b]30/107 00:44 1,543,019k 34,308k +4.23 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8-g8 Ne6-g7 4.Rg8xd8 Rd7xd8 5.Nc6xd8 Rd5xd8 6.Kh6-h7 Ng7-e6 7.f3-f4 e5xf4 8.g3xf4 Ne6xf4 9.Nd1-e3 Nf4-e6 10.Qb1-b2+ Kf6-e7 11.Ne3-f5+ Ke7-e8 12.Qb2-b7 Rd8-d7 13.Qb7-b5 a7-a5 14.Kh7-h6 a5-a4 15.Qb5-e5[/b]
31/35+ 00:47 1,625,188k 34,452k +4.40 1.Rh7-h8+
31/89 01:08 2,505,046k 36,499k +4.87 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8-g8 Rd5-d3 4.Rg8xd8 Rd7xd8 5.Nc6xd8 Rd3xd8 6.Kh6-h5 Rd8-g8 7.Kh5-h4 Ne6-g5 8.Nd1-e3 Ng5xf3+ 9.Kh4-h3 Kf6-g7 10.Kh3-g2 Nf3-d4 11.Qb1-e4 Rg8-e8 12.Qe4-g4+ Kg7-f8 13.Qg4-d7 a7-a6 14.Ne3-d5 Re8-e6 15.Qd7-d8+ Kf8-g7 16.Nd5-b6
32/69 01:19 2,923,691k 36,941k +5.05 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8-g8 Rd5-d3 4.Rg8xd8 Rd7xd8 5.Nc6xd8 Rd3xd8 6.Kh6-h5 Rd8-g8 7.Kh5-h4 Ne6-g5 8.Nd1-e3 Ng5xf3+ 9.Kh4-h3 e5-e4 10.Kh3-g2 Nf3-h4+ 11.Kg2-f2 Nh4-g6 12.Qb1-b4 Rg8-f8 13.Qb4-c5 a7-a6 14.Qc5-b6+ Kf6-g5 15.Ne3-d5 e4-e3+ 16.Kf2-e2 Kg5-h6 17.Qb6-d6
33/69 02:52 6,846,130k 39,637k +5.05 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8-g8 Rd5-d3 4.Rg8xd8 Rd7xd8 5.Nc6xd8 Rd3xd8 6.Kh6-h5 Rd8-g8 7.Kh5-h4 Ne6-g5 8.Nd1-e3 Ng5xf3+ 9.Kh4-h3 e5-e4 10.Kh3-g2 Nf3-h4+ 11.Kg2-f2 Nh4-g6 12.Qb1-b4 Rg8-f8 13.Qb4-c5 a7-a6 14.Qc5-b6+ Kf6-g5 15.Ne3-d5 e4-e3+ 16.Kf2-e2 Kg5-h6 17.Qb6-d6
34/93 02:52 6,846,130k 39,637k +5.51 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8-g8 Ne6-g7 4.Rg8xd8 Rd7xd8 5.Nc6xd8 Rd5xd8 6.Kh6-h7 Ng7-e6 7.f3-f4 e5xf4 8.g3xf4 Ne6xf4 9.Nd1-e3 Nf4-e6 10.Qb1-b2+ Rd8-d4 11.Ne3-c2 Kf6-e5 12.Nc2xd4 Ne6xd4 13.Qb2-b8+ Ke5-e6 14.Qb8xa7 Nd4-f5 15.Qa7-a2+ Ke6-e5 16.Qa2xf7 Nf5-d6 17.Qf7-f2
FEN: 3q1k2/p2r1p1R/2p1n2K/N2rp3/8/5PP1/8/1Q1N4 w - - 0 1
ShashChess33.1-x86-64-bmi2:
NNUE evaluation using nn-5af11540bbfe.nnue enabled
1/1 00:00 8k 2,079k +2.26 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-d6 3.Nc6xd8
2/2 00:00 10k 2,390k +0.70 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Nc6xd8
3/3 00:00 10k 2,507k +1.15 1.Rh7-h8+ Kf8-e7
4/4 00:00 11k 2,830k +0.92 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8
5/5 00:00 13k 2,520k +0.86 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Nc6xd8 Rd5xd1
6/6 00:00 17k 3,403k +0.55 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Nc6xd8 Rd5xd1
7/8 00:00 24k 4,732k +0.80 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8
8/9 00:00 27k 5,340k +0.80 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-c3 Nd8xc6 5.Nc3xd5+ Rd7xd5
9/11 00:00 83k 11,928k +1.84 1.Rh7-h8+ Kf8-e7 2.Qb1-b4+ c6-c5 3.Qb4-h4+ Ke7-d6
10/14 00:00 448k 26,342k +1.29 1.Rh7-h8+ Kf8-e7 2.Qb1-b4+ c6-c5 3.Qb4-h4+ Ke7-d6 4.Na5-b7+ Kd6-c7 5.Nb7xd8 Rd7xd8 6.Rh8xd8 Rd5xd8
11/24 00:00 1,293k 34,020k +0.94 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Ne3xd5+ Rd7xd5 6.Qb1-b7 Rd5-d6 7.Qb7-c7 Kf6-e6
12/25 00:00 1,372k 34,307k +1.21 1.Rh7-h8+ Kf8-e7 2.Qb1-b4+ c6-c5 3.Qb4-h4+ Ke7-d6 4.Na5-b7+ Kd6-c7 5.Nb7xd8 Rd7xd8 6.Rh8-h7 Rd5xd1 7.Rh7xf7+ Rd1-d7
13/27 00:00 2,023k 35,497k +1.16 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8xd8 Ne6xd8 4.Nd1-e3 Nd8xc6 5.Ne3xd5+ Rd7xd5 6.Qb1-b7 Rd5-d6 7.Qb7-c7 Rd6-e6 8.g3-g4 a7-a5 9.g4-g5+ Kf6-f5+ 10.Kh6-h5
14/28 00:00 2,491k 36,102k +1.78 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8-g8 Rd7-b7 4.Rg8xd8 Rb7xb1 5.Rd8xd5
15/28 00:00 4,400k 37,609k +3.06 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8-g8 Ne6-g7 4.Rg8xd8 Rd7xd8 5.Nc6xd8 Rd5xd8 6.Kh6-h7 Ng7-e6 7.f3-f4 Ne6-f8+ 8.Kh7-h6 Nf8-g6 9.Kh6-h5 e5xf4 10.Qb1-a1+ Kf6-e6 11.Qa1-a2+ Ke6-e7 12.Qa2xa7+ Ke7-f8
16/30 00:00 5,087k 36,861k +3.39 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8-g8 Ne6-g7 4.Rg8xd8 Rd7xd8 5.Nc6xd8 Rd5xd8 6.Kh6-h7 Ng7-e6 7.f3-f4 Ne6-f8+ 8.Kh7-h6 Nf8-g6 9.Kh6-h5 e5xf4 10.g3xf4 Ng6xf4+ 11.Kh5-g4 Nf4-e6 12.Nd1-f2 Rd8-g8+ 13.Kg4-h4 Kf6-e7 14.Nf2-e4 Rg8-h8+ 15.Kh4-g3
17/32 00:00 5,655k 36,481k +3.25 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8-g8 Ne6-g7 4.Rg8xd8 Rd7xd8 5.Nc6xd8 Rd5xd8 6.Kh6-h7 Ng7-e6 7.f3-f4 e5xf4 8.g3xf4 Ne6xf4 9.Nd1-e3 Nf4-e6 10.Qb1-b2+ Ne6-d4 11.Ne3-c2 Kf6-e5 12.Nc2xd4 Rd8xd4 13.Kh7-h6 Ke5-d5 14.Qb2-b5+ Kd5-d6 15.Kh6-g7
18/38 00:00 8,499k 34,832k +3.43 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8-g8 Ne6-g7 4.Rg8xd8 Rd7xd8 5.Nc6xd8 Rd5xd8 6.Kh6-h7 Ng7-e6 7.f3-f4 Ne6-f8+ 8.Kh7-h6 Nf8-g6 9.Kh6-h5 e5xf4 10.Qb1-a1+ Kf6-e7 11.Kh5-g4 f4xg3 12.Nd1-e3 g3-g2 13.Ne3xg2 Rd8-g8 14.Ng2-e3 Ng6-f8+ 15.Kg4-f4 Nf8-e6+ 16.Kf4-e4 Ne6-c5+ 17.Ke4-f3
19/38 00:00 10,976k 34,954k +3.58 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8-g8 Ne6-g7 4.Rg8xd8 Rd7xd8 5.Nc6xd8 Rd5xd8 6.Kh6-h7 Ng7-e6 7.f3-f4 Ne6-f8+ 8.Kh7-h6 Nf8-g6 9.Kh6-h5 e5xf4 10.Qb1-a1+ Kf6-e6 11.g3-g4 Ng6-e5 12.Nd1-f2 f7-f6 13.Qa1-a6+ Ke6-f7 14.Qa6xa7+ Kf7-e6 15.Qa7-b6+ Ke6-e7 16.Qb6-c7+ Rd8-d7 17.Qc7-c5+ Ke7-e8 18.Qc5-c8+ Ke8-f7
20/36 00:00 14,676k 35,111k +3.71 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8-g8 Ne6-g7 4.Rg8xd8 Rd7xd8 5.Nc6xd8 Rd5xd8 6.Kh6-h7 Ng7-e6 7.f3-f4 Ne6-f8+ 8.Kh7-h6 Nf8-g6 9.Kh6-h5 e5xf4 10.Qb1-a1+ Kf6-e7 11.g3-g4 Rd8-d5+ 12.Kh5-h6 Ng6-e5 13.Qa1xa7+ Rd5-d7 14.Qa7-a3+ Ke7-e6 15.Qa3-b3+ Ke6-e7 16.Kh6-g5 Ke7-f8 17.Nd1-f2 Kf8-g7
21/49 00:00 22,998k 36,217k +3.91 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8-g8 Ne6-g7 4.Rg8xd8 Rd7xd8 5.Nc6xd8 Rd5xd8 6.Kh6-h7 Ng7-e6 7.f3-f4 Ne6-f8+ 8.Kh7-h6 Nf8-g6 9.Kh6-h5 e5xf4 10.Qb1-a1+ Kf6-e7 11.g3-g4 Rd8-d5+ 12.Kh5-h6 Ng6-e5 13.Qa1xa7+ Ke7-e6 14.Nd1-f2 f7-f6 15.Qa7-a2 f4-f3 16.Qa2-b3 Ke6-d6 17.Nf2-e4+ Kd6-c6 18.Ne4xf6 Rd5-c5 19.Qb3-a4+ Kc6-b7 20.Qa4-b4+ Kb7-c6 21.Qb4-e4+ Kc6-b5 22.Kh6-g5 Kb5-a5
22/47 00:00 34,280k 36,585k +4.06 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8-g8 Ne6-g7 4.Rg8xd8 Rd7xd8 5.Nc6xd8 Rd5xd8 6.Kh6-h7 Ng7-e6 7.f3-f4 Ne6-f8+ 8.Kh7-h6 Nf8-g6 9.Kh6-h5 e5xf4 10.Qb1-a1+ Kf6-e7 11.g3-g4 Rd8-d5+ 12.Kh5-h6 Ng6-e5 13.Qa1xa7+ Rd5-d7 14.Qa7-a3+ Ke7-e6 15.Qa3-b3+ Ke6-e7 16.Kh6-g5 Rd7-d3 17.Qb3-b7+ Ke7-e6 18.Qb7-b6+ Rd3-d6 19.Qb6-b3+ Ke6-e7 20.Nd1-f2 Rd6-e6 21.Kg5-f5 Ne5-d7 22.Qb3-b4+ Ke7-d8 23.Nf2-e4 Re6-e5+ 24.Kf5xf4
23/53 00:01 49,758k 36,722k +4.12 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8-g8 Ne6-g7 4.Rg8xd8 Rd7xd8 5.Nc6xd8 Rd5xd8 6.Kh6-h7 Ng7-e6 7.f3-f4 Ne6-f8+ 8.Kh7-h6 Nf8-g6 9.Kh6-h5 e5xf4 10.Qb1-a1+ Kf6-e7 11.g3-g4 Rd8-d5+ 12.Kh5-h6 Ng6-e5 13.Qa1xa7+ Ke7-e8 14.Nd1-f2 f4-f3 15.Qa7-a8+ Rd5-d8 16.Qa8-a6 Rd8-d4 17.Qa6-b6 Rd4-d5 18.Qb6-f6 Ne5-d7 19.Qf6xf3 Rd5-d6+ 20.Kh6-g5 Rd6-g6+ 21.Kg5-h4
24/53 00:01 62,851k 36,246k +4.12 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8-g8 Ne6-g7 4.Rg8xd8 Rd7xd8 5.Nc6xd8 Rd5xd8 6.Kh6-h7 Ng7-e6 7.f3-f4 Ne6-f8+ 8.Kh7-h6 Nf8-g6 9.Kh6-h5 e5xf4 10.Qb1-a1+ Kf6-e7 11.g3-g4 Rd8-d5+ 12.Kh5-h6 Ng6-e5 13.Qa1xa7+ Ke7-e8 14.Nd1-f2 f4-f3 15.Qa7-a8+ Rd5-d8 16.Qa8-a6 Rd8-d4 17.Qa6-b6 Rd4-d5 18.Qb6-f6 Ne5-d7 19.Qf6xf3 Rd5-d6+ 20.Kh6-g5 Rd6-g6+ 21.Kg5-h4
22/51 00:01 62,851k 36,246k +4.23 1.Rh7-h8+ Kf8-e7 2.Na5xc6+ Ke7-f6 3.Rh8-g8 Ne6-g7 4.Rg8xd8 Rd7xd8 5.Nc6xd8 Rd5xd8 6.Kh6-h7 Ng7-e6 7.f3-f4 e5xf4 8.g3xf4 Ne6xf4 9.Nd1-e3 Rd8-d3 10.Qb1-a1+ Kf6-e6 11.Qa1-a4 Rd3xe3 12.Qa4-e8+ Ke6-f5 13.Qe8xe3 a7-a5 14.Kh7-g7 a5-a4 15.Qe3-f3 Kf5-g5 16.Kg7xf7