Hiarcs finds the best move

[hurnavich]

Hi, over at rybka forum i posted a responce to a member there who posted this gem of a position,

[fen]r2q1r2/1b2bpkp/n3p1p1/2ppP1P1/p6R/1PN1BQR1/NPP2P1P/4K3 w - - 0 1[/fen]

Not many engines find Qf6 but Hiarcs finds it fast.

Well done Mark.

Analysis by Deep HIARCS 14 WCSC:

1.Qf6+ Bxf6 2.gxf6+ Qxf6 3.exf6+ Kxf6 4.Nxa4 h5 5.Nb6 e5 6.Nd7+ Kg7 7.Nxf8 Kxf8 8.b4 d4 9.Bh6+ Ke7 10.c3 e4 11.bxc5 Nxc5 12.cxd4 Nd3+ 13.Rxd3 exd3 14.Nb4 f6 15.Nxd3 Rd8 16.Bd2 Kf7 17.b4 Re8+ 18.Kd1 g5 19.Rh3 Bd5 20.b5
+- (3.83) Depth: 18/42 00:00:00 1413kN
1.Qf6+ Bxf6 2.gxf6+ Qxf6 3.exf6+ Kxf6 4.Nxa4 e5 5.Nb6 h5 6.Nd7+ Kg7 7.Nxf8 Kxf8 8.b4 d4 9.Bh6+ Ke7 10.c3 e4 11.bxc5 Nxc5 12.cxd4 Nd3+ 13.Rxd3 exd3 14.Nb4 f6 15.Nxd3 Rd8 16.Be3 Bf3 17.b4
+- (3.85) Depth: 18/42 00:00:00 2103kN
1.Qf6+ Bxf6 2.gxf6+ Qxf6 3.exf6+ Kxf6 4.Nxa4 h5 5.Nb6 e5 6.Nd7+ Kg7 7.Nxf8 Kxf8 8.b4 d4 9.Bh6+ Ke7 10.c3 e4 11.bxc5 Nxc5 12.cxd4 Nd3+ 13.Rxd3 exd3 14.Nb4 f6 15.Nxd3 Rd8 16.Be3 Bf3 17.Rh3 Be4 18.Ke2
+- (3.85) Depth: 19/47 00:00:01 4469kN
1.Qf6+
+- (4.10 ++) Depth: 20/47 00:00:04 14119kN
1.Qf6+ Bxf6 2.gxf6+ Qxf6 3.Bh6+ Kg8 4.exf6 d4 5.Bg7 h5 6.Rgh3 Kh7 7.Ne2 e5 8.Bxf8 Rxf8 9.bxa4 Kh6 10.f4
+- (4.32) Depth: 20/47 00:00:05 18788kN
1.Qf6+ Bxf6 2.gxf6+ Qxf6 3.Bh6+ Kg8 4.exf6 d4 5.Bg7 h5 6.Rgh3 Kh7 7.Ne2 e5 8.Bxf8 Rxf8 9.bxa4 Kh6 10.f4 Bc8 11.Rg3 Bd7 12.a5 e4 13.Rb3 Be6
+- (4.24) Depth: 21/47 00:00:05 20509kN
1.Qf6+ Bxf6 2.gxf6+ Qxf6 3.Bh6+ Kg8 4.exf6 d4 5.Bg7 h5 6.Rgh3 Kh7 7.Ne2 e5 8.Bxf8 Rxf8 9.bxa4 Ra8 10.b3 Rd8 11.Nac1
+- (4.41) Depth: 22/47 00:00:07 25944kN
1.Qf6+ Bxf6
+- (4.16 --) Depth: 23/47 00:00:09 32449kN
1.Qf6+ Bxf6 2.gxf6+ Qxf6 3.Bh6+ Kg8 4.exf6 d4 5.Bg7 h5 6.Rgh3 Kh7 7.Ne2 e5 8.Bxf8 Rxf8 9.bxa4 Bc8 10.Rg3 Bf5 11.Kd2 Kh6 12.f4 Rb8 13.b3 e4 14.Rg5 Kh7
+- (3.95) Depth: 23/48 00:00:11 38134kN
1.Qf6+ Bxf6 2.gxf6+ Qxf6 3.Bh6+ Kg8 4.exf6 d4 5.Bg7 h5 6.Rgh3 Kh7 7.Ne2 e5 8.Bxf8 Rxf8 9.bxa4 Bc8 10.Rg3 Bf5 11.Kd2 Rb8 12.Kc1 Rb6 13.Ng1 Rxf6 14.Nf3 Kh6 15.a5 Re6 16.Kb1 f6
+- (3.96) Depth: 24/50 00:00:16 56222kN

Hurnavich

[Celadus]

Hi, over at rybka forum i posted a responce to a member there who posted this gem of a position,

[fen]r2q1r2/1b2bpkp/n3p1p1/2ppP1P1/p6R/1PN1BQR1/NPP2P1P/4K3 w - - 0 1[/fen]

Not many engines find Qf6 but Hiarcs finds it fast.

Well done Mark.

Analysis by Deep HIARCS 14 WCSC:

1.Qf6+ Bxf6 2.gxf6+ Qxf6 3.exf6+ Kxf6 4.Nxa4 h5 5.Nb6 e5 6.Nd7+ Kg7 7.Nxf8 Kxf8 8.b4 d4 9.Bh6+ Ke7 10.c3 e4 11.bxc5 Nxc5 12.cxd4 Nd3+ 13.Rxd3 exd3 14.Nb4 f6 15.Nxd3 Rd8 16.Bd2 Kf7 17.b4 Re8+ 18.Kd1 g5 19.Rh3 Bd5 20.b5
+- (3.83) Depth: 18/42 00:00:00 1413kN
1.Qf6+ Bxf6 2.gxf6+ Qxf6 3.exf6+ Kxf6 4.Nxa4 e5 5.Nb6 h5 6.Nd7+ Kg7 7.Nxf8 Kxf8 8.b4 d4 9.Bh6+ Ke7 10.c3 e4 11.bxc5 Nxc5 12.cxd4 Nd3+ 13.Rxd3 exd3 14.Nb4 f6 15.Nxd3 Rd8 16.Be3 Bf3 17.b4
+- (3.85) Depth: 18/42 00:00:00 2103kN
1.Qf6+ Bxf6 2.gxf6+ Qxf6 3.exf6+ Kxf6 4.Nxa4 h5 5.Nb6 e5 6.Nd7+ Kg7 7.Nxf8 Kxf8 8.b4 d4 9.Bh6+ Ke7 10.c3 e4 11.bxc5 Nxc5 12.cxd4 Nd3+ 13.Rxd3 exd3 14.Nb4 f6 15.Nxd3 Rd8 16.Be3 Bf3 17.Rh3 Be4 18.Ke2
+- (3.85) Depth: 19/47 00:00:01 4469kN
1.Qf6+
+- (4.10 ++) Depth: 20/47 00:00:04 14119kN
1.Qf6+ Bxf6 2.gxf6+ Qxf6 3.Bh6+ Kg8 4.exf6 d4 5.Bg7 h5 6.Rgh3 Kh7 7.Ne2 e5 8.Bxf8 Rxf8 9.bxa4 Kh6 10.f4
+- (4.32) Depth: 20/47 00:00:05 18788kN
1.Qf6+ Bxf6 2.gxf6+ Qxf6 3.Bh6+ Kg8 4.exf6 d4 5.Bg7 h5 6.Rgh3 Kh7 7.Ne2 e5 8.Bxf8 Rxf8 9.bxa4 Kh6 10.f4 Bc8 11.Rg3 Bd7 12.a5 e4 13.Rb3 Be6
+- (4.24) Depth: 21/47 00:00:05 20509kN
1.Qf6+ Bxf6 2.gxf6+ Qxf6 3.Bh6+ Kg8 4.exf6 d4 5.Bg7 h5 6.Rgh3 Kh7 7.Ne2 e5 8.Bxf8 Rxf8 9.bxa4 Ra8 10.b3 Rd8 11.Nac1
+- (4.41) Depth: 22/47 00:00:07 25944kN
1.Qf6+ Bxf6
+- (4.16 --) Depth: 23/47 00:00:09 32449kN
1.Qf6+ Bxf6 2.gxf6+ Qxf6 3.Bh6+ Kg8 4.exf6 d4 5.Bg7 h5 6.Rgh3 Kh7 7.Ne2 e5 8.Bxf8 Rxf8 9.bxa4 Bc8 10.Rg3 Bf5 11.Kd2 Kh6 12.f4 Rb8 13.b3 e4 14.Rg5 Kh7
+- (3.95) Depth: 23/48 00:00:11 38134kN
1.Qf6+ Bxf6 2.gxf6+ Qxf6 3.Bh6+ Kg8 4.exf6 d4 5.Bg7 h5 6.Rgh3 Kh7 7.Ne2 e5 8.Bxf8 Rxf8 9.bxa4 Bc8 10.Rg3 Bf5 11.Kd2 Rb8 12.Kc1 Rb6 13.Ng1 Rxf6 14.Nf3 Kh6 15.a5 Re6 16.Kb1 f6
+- (3.96) Depth: 24/50 00:00:16 56222kN

Hurnavich

i5-70 processor @ 2.66Ghz
Deep Hiarcs 12 finds Qf6 in 2mins-45 secs. Depth 16/48. 1675KN/s
+= 0.67

[Peter Grayson]

Not many engines find Qf6 but Hiarcs finds it fast.

Well done Mark.

Analysis by Deep HIARCS 14 WCSC:

1.Qf6+ Bxf6 2.gxf6+ Qxf6 3.Bh6+ Kg8 4.exf6 d4 5.Bg7 h5 6.Rgh3 Kh7 7.Ne2 e5 8.Bxf8 Rxf8 9.bxa4 Bc8 10.Rg3 Bf5 11.Kd2 Rb8 12.Kc1 Rb6 13.Ng1 Rxf6 14.Nf3 Kh6 15.a5 Re6 16.Kb1 f6
+- (3.96) Depth: 24/50 00:00:16 56222kN

Hurnavich

That's some machine you have there, in HCE Deep HIARCS WCSC took over 9 minutes on my dual E5-2687w to get to 24 ply depth compared to your machine's 16 seconds! Curiously it was faster in Chessbase GUI11 taking just 4min 19 sec to find it at 24 ply. Position learning was turned off. Still nowhere near the warp factor speed of your machine though.

PeterG
Deep HIARCS 14 WCSC: HIARCS CHESS EXPLORER
9.31 1.Qf6+ (depth 25, 1/48), 4.3G nodes (7.6M nps)
0.00: -0.12/13 1.bxa4 Rb8 2.Bc1 d4 3.Ne4 Qa5+ 4.Bd2 Qxa4 5.Nf6 Rh8 6.Qb3 Bc6 7.Qxa4 Bxa4 8.Ra3 Bb5 9.Rah3 Bc4
0.00: -0.10/14 1.bxa4 Rb8 2.Qf4 h5 3.Bd2 d4 4.Ne2 Nc7 5.Ba5 Ra8 6.Bxc7 Qxc7 7.b3 Bd5 8.Rhh3 Qa5+ 9.Kf1
0.01: -0.10/15 1.bxa4 Rb8 2.Qf4 h5 3.Nb5 d4 4.Bd2 Qd5 5.b3 Qh1+
0.01: +0.13/15 1.Qf4 Rh8 2.Nxa4 d4 3.Bd2
0.01: -0.10/16 1.Qf4 Rh8 2.Nxa4 d4 3.Bd2 Nc7 4.c4 dxc3 5.bxc3 Nd5 6.Qe4 Qc7 7.Qe2 Nb6 8.Nc1 Nxa4 9.bxa4 Bd5
0.02: 0.00/16 1.bxa4 d4 2.Rgh3 h5 3.Qxb7 dxe3 4.fxe3 Nc7 5.Qg2 Bxg5 6.Rc4 Nd5 7.Nxd5 exd5 8.Rxc5 Rxa4 9.Rxd5 Qc8 10.Nc3 Rb4 11.Nd1 Rc4 12.Nc3
0.03: +0.05/17 1.bxa4 d4 2.Rgh3 h5 3.Qxb7 dxe3 4.fxe3 Nc7 5.Qg2 Bxg5 6.Rc4 Nd5 7.Nxd5 exd5 8.Rxc5 Rxa4 9.Nc3 Rg4 10.Qxd5 Qe7 11.Ke2 Rd8 12.Qc6 Rg1
0.06: +0.30/18 1.bxa4 d4 2.Qxb7 dxe3
0.11: +0.44/19 1.bxa4 Rh8 2.Nb5 d4 3.Qxb7 dxe3 4.Nd6 Bxd6 5.exd6 exf2+ 6.Kxf2 Qxd6 7.Nc3 Nc7 8.Qe4 e5 9.Rd3 Qe7 10.Qe3
0.21: +0.43/20 1.bxa4 Rh8 2.Nb5 d4 3.Qxb7 dxe3 4.Nd6 Bxd6 5.exd6 exf2+ 6.Kxf2 Qxd6 7.Nc3 Qd2+ 8.Ne2 Qd5 9.Rb3 Qxb7 10.Rxb7
0.00: +0.22/16 1.bxa4 Rh8 2.Nb5 d4 3.Qxb7 dxe3 4.Nd6 Bxd6 5.exd6 exf2+ 6.Kxf2 Qxd6 7.Qf3 Qe5 8.Nc3 Nb4 9.Kg1 Rhf8 10.Qf2 f5 11.Rgh3 Rh8 12.Rc4 Rac8 13.b3 Qd6 14.Nb5 Qd1+
0.00: +0.22/17 1.bxa4 Rh8 2.Nb5 d4 3.Qxb7 dxe3 4.Nd6 Bxd6 5.exd6 exf2+ 6.Kxf2 Qxd6 7.Qf3 Qe5 8.Nc3 Nb4 9.Kg1 Rhf8 10.Qf2 f5 11.Rgh3 Rh8 12.Rc4 Rac8 13.b3 Qd6 14.Nb5 Qd1+
0.01: +0.22/18 1.bxa4 Rh8 2.Nb5 d4 3.Qxb7 dxe3 4.Nd6 Bxd6 5.exd6 exf2+ 6.Kxf2 Qxd6 7.Qf3 Qe5 8.Nc3 Nb4 9.Kg1 Rhf8 10.Qf2 f5 11.Rgh3 Rh8 12.Rc4 Rac8 13.b3 Qd6 14.Nb5 Qd1+
0.02: +0.22/19 1.bxa4 Rh8 2.Nb5 d4 3.Qxb7 dxe3 4.Nd6 Bxd6 5.exd6 exf2+ 6.Kxf2 Qxd6 7.Qf3 Qe5 8.Nc3 Nb4 9.b3 Rad8 10.Ne4 Nxc2 11.Qf6+ Qxf6+ 12.gxf6+ Kg8 13.Nxc5 Rd2+ 14.Kf1 Rd1+ 15.Ke2 Rd5 16.b4 Nd4+
0.06: 0.00/20 1.bxa4 d4 2.Rgh3 h5 3.Qxb7 dxe3
0.12: +0.23/21 1.bxa4 Rh8 2.Nb5 d4 3.Qxb7 dxe3 4.Nd6 exf2+ 5.Kxf2
0.46: -0.01/22 1.bxa4 d4 2.Qxb7 dxe3 3.Ne4 Nc7 4.fxe3 Rxa4 5.Nac3
2.21: -0.13/23 1.bxa4 d4 2.Rgh3 h5 3.Qxb7 dxe3 4.fxe3 Nc7 5.Qg2 Nd5 6.Rc4 Nb6 7.Re4 Qb8
4.02: -0.12/23 1.Bd2 Qc7 2.Qf4 axb3
9.23: +4.00/23 1.Qf6+ Bxf6 2.gxf6+ Qxf6 3.Bh6+ Kg8 4.exf6 d4 5.Bg7 h5 6.Rgh3 Kh7 7.Ne2 e5 8.Bxf8 Rxf8 9.bxa4 Bc8 10.Rb3 Bf5 11.Rb6 Nc7 12.Rc6 Ne6
9.27: +4.10/24 1.Qf6+ Bxf6 2.gxf6+ Qxf6 3.Bh6+ Kg8 4.exf6 d4 5.Bg7 h5 6.Rgh3 Kh7 7.Ne2 e5 8.Bxf8 Rxf8 9.bxa4 Bc8 10.Rg3 Bf5 11.Kd2 Kh6 12.f4 Rb8 13.b3 e4 14.Rg5 e3+ 15.Kd1 Be4 16.Re5 Bf3

Chessbase GUI11:
Analysis by Deep HIARCS 14 WCSC:

1.bxa4
= (0.11 !) Depth: 13/37 00:00:00 1251kN
1.bxa4 d4 2.Qxb7 dxe3 3.Ne4 Nc7 4.b3 exf2+ 5.Kxf2 Qd4+
= (0.12) Depth: 13/37 00:00:00 3546kN
1.bxa4 Qb8
= (-0.12 --) Depth: 14/37 00:00:01 5053kN
1.bxa4 Qb8 2.Qf4
= (-0.12) Depth: 14/37 00:00:01 5541kN
1.Qf4
= (-0.11) Depth: 14/37 00:00:01 5973kN
1.Qf4
+/= (0.37 !) Depth: 14/37 00:00:01 6427kN
1.Qf4 Rh8 2.Nxa4 d4 3.Bd2 Nc7
+/= (0.37) Depth: 14/37 00:00:01 7028kN
1.Qf4 Rh8
= (0.12 --) Depth: 15/37 00:00:01 7495kN
1.Qf4 h5 2.Nxa4 d4 3.Bd2 Nc7 4.c4 dxc3 5.N2xc3 Nd5
=/+ (-0.52) Depth: 15/42 00:00:02 9079kN
1.bxa4
=/+ (-0.51) Depth: 15/42 00:00:02 9093kN
1.bxa4 d4 2.Rgh3 h5 3.Qxb7 dxe3 4.fxe3 Nc7 5.b3 Nd5 6.Rc4 Rb8 7.Qa7 Ra8 8.Qb7
= (0.00) Depth: 15/42 00:00:02 9827kN
1.bxa4 d4 2.Rgh3 h5 3.Qxb7 dxe3 4.fxe3 Nc7 5.b3 Nd5 6.Rc4 Rc8 7.Ke2 Bxg5 8.Rf3 Nxc3+ 9.Rxc3
= (0.00) Depth: 16/42 00:00:02 12139kN
1.bxa4 d4 2.Qxb7 dxe3 3.Ne4 Nc7 4.fxe3 Rxa4 5.Qb3 Qa8 6.Nac3 Ra1+ 7.Kf2 Rb8 8.Qc4 Rxb2 9.Rgh3 Rxc2+ 10.Ne2
= (0.23) Depth: 17/42 00:00:04 19020kN
1.bxa4 d4 2.Qxb7 dxe3 3.Ne4 Nc7 4.fxe3 Rxa4 5.Qb3 Qa8 6.Nac3 Ra1+ 7.Kf2 Rb8 8.Qc4 Rxb2 9.Rgh3 h5 10.gxh6+ Kh7 11.Rf4 Rxc2+ 12.Kf3 Qf8 13.Qd3 Rb2 14.Qc4 Rc2
= (0.00) Depth: 18/42 00:00:05 24341kN
1.bxa4 d4 2.Rgh3 h5 3.Qxb7 dxe3
= (0.00) Depth: 19/46 00:00:07 39033kN
1.bxa4 d4 2.Rgh3 h5 3.Qxb7 dxe3 4.fxe3 Nc7 5.b3 Nd5 6.Ke2 Rb8 7.Qa7 Ra8 8.Qb7
= (0.00) Depth: 20/46 00:00:10 54946kN
1.bxa4 d4 2.Rgh3 h5 3.Qxb7 dxe3 4.fxe3 Nc7 5.Qg2 Nd5 6.Rc4 Nb6 7.Re4 Bxg5 8.Rf3 Qe7 9.Qf2 c4 10.h4 f5 11.exf6+ Bxf6
= (0.01) Depth: 21/46 00:00:19 103mN
1.bxa4 d4 2.Rgh3 h5 3.Qxb7 dxe3 4.fxe3 Nc7 5.Qg2 Nd5 6.Rc4 Nb6 7.Re4 Bxg5 8.Rf3 c4 9.Rd4 Qe7 10.Ke2 Nxa4 11.Nxa4 Rxa4 12.Nc3 Rb4 13.Ne4 Bh4 14.Nf6
= (-0.03) Depth: 22/48 00:00:28 157mN
1.bxa4 d4 2.Rgh3 h5 3.Qxb7 dxe3 4.fxe3 Nc7 5.Qg2 Nd5 6.Rg3 Qb8 7.Nd1 Qxe5 8.Nac3 Rab8 9.Re4 Qd6 10.Nb5 Qa6 11.Kf1 Qa5 12.Rf3
= (-0.01) Depth: 23/48 00:00:59 362mN
1.bxa4 d4 2.Rgh3 h5 3.Qxb7 dxe3 4.fxe3 Nc7 5.Qg2 Nd5 6.Rg3 Qb8 7.Nd1 Qxe5 8.Qe4 Qxe4 9.Rxe4 Nb4
= (-0.03) Depth: 24/48 00:01:39 616mN
1.Qf6+
= (-0.02) Depth: 24/48 00:04:19 1709mN
1.Qf6+
= (0.23 !) Depth: 24/48 00:04:20 1718mN
1.Qf6+
+/- (1.23 !) Depth: 24/48 00:04:24 1745mN
1.Qf6+
+- (3.23 !) Depth: 24/48 00:04:45 1914mN
1.Qf6+ Bxf6 2.gxf6+ Qxf6 3.Bh6+ Kg8 4.exf6 d4 5.Bg7 h5 6.Rgh3 Kh7 7.Ne2 e5 8.Bxf8 Rxf8 9.bxa4 Kh6 10.f4
+- (4.28) Depth: 24/59 00:07:37 3467mN
1.Qf6+ Bxf6 2.gxf6+ Qxf6 3.exf6+ Kxf6
+- (4.03) Depth: 25/59 00:07:53 3595mN

(Grayson, Newport, South Wales 26.07.2013)