test position: another bishop sac on h7

[yanquis1972]

saw this posted at the infamous 'commie board'-- haven't invested much time yet but no engine i've tried solves it within 5 mins on my machine. looking forward to the heavy hitters having a go w/ assorted engines.

[d]r1bq1rk1/pp2bppp/1n2p3/3pP3/8/2RBBN2/PP2QPPP/2R3K1 w - - 0 19

[Event "Cap d'Agde CCAS op"]
[Site "Cap d'Agde"]
[Date "2008.10.27"]
[Round "4"]
[White "Trent, Lawrence"]
[Black "Deslandes, Pascal"]
[Result "1-0"]
[ECO "C06"]
[WhiteElo "2470"]
[BlackElo "2299"]
[PlyCount "49"]
[EventDate "2008.10.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "FRA"]
[Source "ChessBase"]
[SourceDate "2009.01.08"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. c3 c5 6. Bd3 Nc6 7. Ngf3 Qb6 8. O-O
cxd4 9. cxd4 Nxd4 10. Nxd4 Qxd4 11. Nf3 Qb6 12. Qa4 Qb4 13. Qc2 Qc5 14. Qe2 Be7
15. Be3 Qc7 16. Rac1 Qd8 17. Rc3 O-O 18. Rfc1 Nb6 19. Bxh7+ Kxh7 20. Ng5+ Bxg5
21. Qh5+ Kg8 22. Bxg5 f6 23. Rh3 Bd7 24. Qh7+ Kf7 25. Bxf6 1-0

[zullil]

saw this posted at the infamous 'commie board'-- haven't invested much time yet but no engine i've tried solves it within 5 mins on my machine. looking forward to the heavy hitters having a go w/ assorted engines.

[d]r1bq1rk1/pp2bppp/1n2p3/3pP3/8/2RBBN2/PP2QPPP/2R3K1 w - - 0 19

Stockfish-1.6.3 (8 threads) takes about ten minutes:

Code: Select all

Searching: r1bq1rk1/pp2bppp/1n2p3/3pP3/8/2RBBN2/PP2QPPP/2R3K1 w - -
infinite: 0 ponder: 0 time: 0 increment: 0 moves to go: 0
 2     +0.24   00:01      140 Rc7 Nc4 
 2     +0.81   00:01      296 Qc2 g6 
 3     +0.97   00:01      527 Qc2 g6 Rc7 
 4     +0.73   00:01      959 Qc2 g6 Bh6 Re8 
 5     +0.93   00:01     1633 Qc2 g6 Bh6 Re8 Qd2 
 6     +0.53   00:01     3079 Qc2 g6 Bh6 Re8 Qd2 Bd7 
 7     +0.65   00:01    12175 Qc2 g6 Bh6 Re8 Qd2 Bd7 Ng5 f6 exf6 Bxf6 
 8     +0.69   00:01    77721 Qc2 g6 Bb5 a6 Bf1 Nd7 Bh6 Re8 Rc7 
 9  <  +0.48   00:01   136773 Qc2 g6 Bb5 a6 Bf1 Bd7 Rb3 Bb5 Bxb5 axb5 
10     +0.44   00:01   225337 Qc2 g6 Bb5 a6 Bf1 Bd7 Qb3 Na4 Rc7 b5 Bd3 Rc8 
11     +0.44   00:01   304412 Qc2 g6 Bb5 a6 Bf1 Bd7 Qb3 Na4 Rc7 b5 Bd3 Rc8 
12     +0.44   00:01   649023 Qc2 g6 Bb5 a6 Bf1 Bd7 Qb3 Na4 Rc7 b5 Bd3 Rc8 
13     +0.48   00:01    2150k Qc2 g6 Bb5 a6 Bd3 Bd7 Qb3 Na4 Rc7 b5 Bh6 Re8 Nd4 
                              Rc8 
14  <  +0.28   00:02    4525k Qc2 g6 Bh6 Re8 Qe2 Bd7 Qd2 Bb4 Bg5 Bxc3 Rxc3 Qb8 
15     +0.36   00:03   11401k Qc2 g6 Bb5 f5 Bh6 Rf7 Be3 Rf8 Qd2 a6 Be2 f4 Bxf4 
                              Bb4 Rxc8 Bxd2 Rxd8 Bxf4 
16     +0.28   00:04   22099k Qc2 g6 Bb5 f5 Bh6 Rf7 Be3 Rf8 Qd2 a6 Bf1 f4 Bxb6 
                              Qxb6 Rc7 Qb4 Qxb4 Bxb4 Bd3 Ba5 
17     +0.44   00:07   43357k Qc2 g6 Bb5 f5 Bh6 Rf7 Be3 Rf8 Qd2 a6 Bf1 f4 Bxf4 
                              Bb4 Bh6 Bd7 Bxf8 Qxf8 Bd3 Bxc3 Qxc3 
17  >  +0.73   00:10   60700k Nd4 g6 Bh6 Re8 Nb5 Bd7 Nc7 
18     +0.40   00:14   92194k Nd4 g6 Qg4 Bd7 Bh6 Re8 Nb5 Nc4 Bxc4 dxc4 Qxc4 Bc6 
                              Rd3 Qb6 Nd6 Qxb2 Nxe8 Rxe8 Qf4 Qxa2 Rg3 
19     +0.44   00:26  179089k Nd4 g6 Bh6 Bg5 Bxf8 Bxc1 Bd6 Bxb2 Qxb2 Na4 Qb4 
                              Nxc3 Qxc3 Bd7 Nb3 Rc8 Qd4 Qb6 Bc5 Qc6 Qf4 b6 Bd6 
20     +0.32   00:40  287657k Nd4 g6 Bh6 Bg5 Bxf8 Bxc1 Bd6 Bxb2 Qxb2 Na4 Qb4 
                              Nxc3 Qxc3 Bd7 Nb3 Rc8 Qd4 a6 Qb4 Bb5 Bxb5 axb5 
                              Qxb5 Rc2 Qxb7 Rxa2 g3 Rb2 Kg2 Rb1 
21     +0.32   01:26  621278k Nd4 g6 Bh6 Bg5 Bxf8 Bxc1 Bd6 Bxb2 Qxb2 Na4 Qb4 
                              Nxc3 Qxc3 Bd7 Qb2 Qb6 Qxb6 axb6 a3 Kg7 f4 Ra4 Bb4 
                              Ra8 Kf2 f6 Ke3 fxe5 fxe5 Kf7 
21  >  +0.61   02:56    1309M Rc7 Nc4 Bxh7+ Kxh7 Rxe7 Nxe3 Ng5+ Kg6 Rcc7 Nf5 
                              Nh3 Qxe7 Rxe7 Nxe7 Qg4+ Kh7 Qh5+ Kg8 Ng5 
22     +0.93   05:25    2447M Rc7 Nc4 Bxh7+ Kxh7 Rxe7 Qxe7 Ng5+ Kg6 Rxc4 dxc4 
                              Qg4 f5 Qh4 Qxg5 Qxg5+ Kf7 Bc5 Rh8 Qe7+ Kg6 Be3 b6 
                              h4 Kh7 h5 Rg8 b3 cxb3 axb3 Rh8 
23     +0.93   07:49    3575M Rc7 Kh8 Nh4 g6 Nf3 Kg8 b3 Rb8 Bb5 d4 Bh6 Nd5 R7c2 
                              a6 Bd3 Nc3 Qd2 Ba3 Bxf8 Bxc1 Qxc1 Qxf8 Nxd4 Nd5 
                              Be4 Bd7 Bxd5 exd5 
24     +0.97   10:05    4617M Rc7 Kh8 Nh4 g6 Nf3 Kg8 b3 Rb8 Bb5 d4 Bh6 Nd5 R7c2 
                              a6 Bc4 Nb4 Rd2 Re8 Nxd4 Bd7 Nf3 Rc8 Rcd1 Rc7 
24  >  +1.13   10:41    4901M Bxh7+ Kxh7 Ng5+ Bxg5 Qh5+ Bh6 Bxh6 g6 Qh3 Kg8 Rg3 
                              Bd7 Bg5 Rc8 Rxc8 Qxc8 Rc3 Qe8 Bf6 
25  >  +1.94   11:33    5327M Bxh7+ Kxh7 Ng5+ Bxg5 Qh5+ Bh6 Bxh6 g6 Qh3 Kg8 Rg3 
                              Bd7 Bg5 Rc8 Rxc8 Qxc8 Rc3 Qe8 Bf6 
Nodes: 5327032810
Nodes/second: 7681384
Best move: Bxh7+
Ponder move: Kxh7

[yanquis1972]

nice result...i keep reading that stockfish is great at 'best move' positions over longish thinks, but never think to try it as nothing about the engine has ever particularly stood out to me (other than it's remarkable elo of course).

erdo (or one of those guys) was saying that the latest stockfish will solve in 10-30 minutes (on big hardware) what rybka takes half a day to.

[yanquis1972]

another good result from ivanhoe (default parameters) -- this one appears easier than andrew's, thankfully .

4230360: Trent,L - Deslandes,P, Cap d'Agde CCAS op 2008
r1bq1rk1/pp2bppp/1n2p3/3pP3/8/2RBBN2/PP2QPPP/2R3K1 w - - 0 1

Analysis by IvanHoe-B 66x64c:

19.Qc2 g6 20.Qe2 Bd7 21.Rc7 Bc6
+/= (0.49) Depth: 6 00:00:00 9kN
+/= (0.49) Depth: 6 00:00:00 13kN
19.h3 Bd7 20.Qc2 h6 21.Rc7 Nc4 22.Bh7+ Kh8 23.Rxb7 Nxe3 24.fxe3
+/= (0.44) Depth: 7 00:00:00 24kN
+/= (0.44) Depth: 7 00:00:00 33kN
19.Qc2 g6 20.b3 Ba3 21.Rd1 Bd7 22.Rc7 Rc8
+/= (0.43) Depth: 8 00:00:00 46kN
+/= (0.43) Depth: 8 00:00:00 58kN
19.Nd4 Bd7 20.Qg4 g6 21.Bh6 Re8 22.Nb5 Bc6 23.Qf4 Nc4 24.Bxc4 dxc4 25.Qxc4 Qb6 26.Nd4 Bd5
+/= (0.51 ++) Depth: 9 00:00:00 113kN
= (0.15) Depth: 14 00:00:02 12753kN
19.Qc2 h6 20.Qe2 Na4 21.R3c2 Bd7 22.Qd2 b6 23.Bxh6 Nc5 24.Bf4 Rc8 25.Nd4 Rc7 26.Be2 Ne4 27.Qe3 Bc5
= (0.23 ++) Depth: 15 00:00:03 16732kN
= (0.20) Depth: 17 00:00:09 49623kN
19.h4 Nd7 20.Rc7 a6 21.h5 Re8 22.b4 f5 23.Qb2 h6 24.a3 Rf8 25.R1c2 Qe8 26.Qc1 Rb8 27.Bd4 Ra8 28.R2c3
+/= (0.28 ++) Depth: 18 00:00:17 94603kN, tb=7
+/= (0.63) Depth: 23 00:05:32 1889mN, tb=461
19.Bxh7+
+/= (0.69 ++) Depth: 23 00:06:10 2121mN, tb=624
+- (2.34 ++) Depth: 23 00:07:36 2611mN, tb=2129

[GARGAMEL]

Hello

This is a position, which I one week ago in CSS Forum has introduced!

http://forum.computerschach.de/cgi-bin/ ... l?tid=2108

regard Anton

[yanquis1972]

ah, thanks for the tip.

amazing result from pro deo -- btw, i am quite sure you can get that to work on your machine as i have before. it's a bit confusing & incosistent & i can't remember the details, but i'll give it another go & post how to do it here.

[yanquis1972]

hi anton -- just download pro deo 1.6 here -- http://www.top-5000.nl/

after unzipping load rebeluci.exe instead of prodeo. (don't change parameters when they pop up after create uci engine). everything working fine in f12 GUI for me.

4230360: Trent,L - Deslandes,P, Cap d'Agde CCAS op 2008
r1bq1rk1/pp2bppp/1n2p3/3pP3/8/2RBBN2/PP2QPPP/2R3K1 w - - 0 1

Analysis by ProDeo 1.6Q3:

19.Qc2 g6 20.Bh6 Re8 21.Qe2 Bf8
+/- (1.37) Depth: 6 00:00:00 48kN
19.Qc2 g6 20.Bh6 Re8 21.Qd1 Bf8 22.Be3
+/- (1.15) Depth: 7 00:00:00 86kN
19.Qc2 g6 20.Bh6 Re8 21.b3 Bd7 22.Be2 Rc8
+/- (1.06) Depth: 8 00:00:00 363kN
19.Nd4 Bb4 20.R3c2 Bd7 21.Rc7
+/- (1.08) Depth: 8 00:00:00 575kN
19.Nd4 g6 20.Qg4 Nd7 21.Qg3 Bh4 22.Qf4 a5
+/- (1.27) Depth: 9 00:00:00 1517kN
19.Nd4 g6 20.Qg4 Bd7 21.Bh6 f5 22.Qh3 Rf7 23.b3 Bh4
+/- (1.13) Depth: 10 00:00:01 3338kN
19.Nd4 g6 20.Qg4 Bd7 21.Bh6 f5 22.Qh3 Rf7 23.b3 Ba3 24.R1c2 Rc8
+/- (1.09) Depth: 11 00:00:04 8673kN
19.Bxh7+ Kxh7 20.Ng5+ Bxg5 21.Qh5+ Bh6 22.Bxh6 g6 23.Qh3 Kg8 24.Rf3 Nc4 25.Bxf8 Qxf8 26.Rxc4 dxc4 27.b3
+/- (1.10) Depth: 11 00:00:06 14716kN
19.Bxh7+ Kxh7 20.Ng5+ Bxg5 21.Qh5+ Bh6 22.Bxh6 g6 23.Qh3 Kg8 24.Bd2 f6 25.Qh6 Qe7 26.Rc7
+- (1.77) Depth: 12 00:00:16 36828kN