nice sac to force draw

[jdart]

bookbuilder-ArasanX, ICC 2010

bookbuilder (Houdini with custom book) found an escape move in this game:

[D] 2r1b1k1/5p2/1R2nB2/1p2P2p/2p5/2Q1P2K/3R1PB1/r3q3 w - -

bm Rxe6

[yanquis1972]

not getting trouble from this one among the cream of the crop programs. after that it'd seem the position is very difficult. would be interesting to see amateur results since the likes of hiarcs & shredder are flailing in comparison to houdini/rybka/critter/stockfish. naum also finds this very quickly...

[jdart]

about 74 seconds for my latest build of Arasan, on a quad.

Crafty 23.3 took longer: about 3 1/2 minutes.

--Jon

[Robert Flesher]

not getting trouble from this one among the cream of the crop programs. after that it'd seem the position is very difficult. would be interesting to see amateur results since the likes of hiarcs & shredder are flailing in comparison to houdini/rybka/critter/stockfish. naum also finds this very quickly...

New game
2r1b1k1/5p2/1R2nB2/1p2P2p/2p5/2Q1P2K/3R1PB1/r3q3 w - - 0 1

Analysis by Junior 11.1a:

1.f4 Rc1 2.Qb4 Qxe3+
µ (-1.36) Depth: 3 00:00:00
1.Bb7 Qf1+ 2.Kh4 Rc1
µ (-0.78) Depth: 3 00:00:00
1.Rb7 Bc6 2.Bxc6 Rxc6
= (-0.21) Depth: 3 00:00:00
1.Rb7 Bc6 2.Bxc6 Rxc6
= (-0.21) Depth: 3 00:00:00
1.Rb7 Bc6 2.Bxc6 Rxc6
= (-0.21) Depth: 3 00:00:00
1.Rb7 Bc6 2.Bxc6 Rxc6
= (-0.21) Depth: 3 00:00:00
1.Rb7 Nc5 2.Re7 Rd1 3.Rc2 Bd7+ 4.Rxd7 Nxd7
-+ (-1.45) Depth: 6 00:00:00 15kN
1.Rbd6 Rc1 2.Qa3 c3 3.R2d3 Rc4
µ (-0.95) Depth: 6 00:00:00 20kN
1.Bb7 Rc1 2.Rc2 Ng5+ 3.Kh4 Qxc3 4.Rxc3
µ (-0.92) Depth: 6 00:00:00 62kN
1.Qc2 Rc1 2.Re2 Bd7 3.Rb7
µ (-0.86) Depth: 6 00:00:00 82kN
1.Qc2 c3 2.Rbd6 Rc1 3.Rd1 Rxc2 4.Rxe1 Rxf2 5.Rg1 Rc4
-+ (-1.51) Depth: 9 00:00:00 320kN
1.Rbd6 Rc1 2.Qb4 c3 3.Ra2 c2 4.Qe4 Qxf2 5.Ra7
µ (-0.97) Depth: 9 00:00:00 903kN
1.Kg3 Rc1 2.Qb4 Rb1 3.Qd6 c3 4.Rc2 h4+ 5.Kxh4 Rc4+ 6.Kh3 b4
µ (-0.79) Depth: 9 00:00:00 1027kN
1.Kg3 Rc1 2.Qb4 c3 3.Rxe6 Qxd2 4.Qh4 Qd3 5.Be4 Rg1+ 6.Kh2 Qd1 7.Rd6 Qf1 8.Qxh5 Qxf2+
µ (-1.32) Depth: 12 00:00:00 3065kN
1.Rxe6 fxe6 2.Qd4 Qb1 3.Be4 Qg1 4.f3 Kf7 5.Qd6 Qf1+ 6.Rg2 Qh1+ 7.Kg3 c3
³ (-0.56) Depth: 12 00:00:02 6746kN
1.Rxe6
= (-0.13) Depth: 14 00:00:06 21238kN
1.Rxe6 fxe6 2.Qd4 Qb1 3.Be4 Qg1 4.f3 Kf7 5.Qb6 Qh1+ 6.Rh2 Qd1 7.Rg2 Qh1+ 8.Rh2
= (0.00) Depth: 16 00:00:13 40102kN
1.Rxe6 fxe6 2.Qd4 Qb1 3.Be4 Qg1 4.f3 Kf7 5.Qb6 Qh1+ 6.Rh2 Qd1 7.Rg2 Qh1+ 8.Rh2
= (0.00) Depth: 17 00:00:26 78540kN

(, Microsoft 09.12.2010)



New game
2r1b1k1/5p2/1R2nB2/1p2P2p/2p5/2Q1P2K/3R1PB1/r3q3 w - - 0 1

Analysis by Deep Shredder 12 x64:

1.Rxe6 fxe6 2.Qd4 Qb1 3.Be4 Qg1 4.f3 Kf7 5.Qd6 Ra7 6.Rg2 Qh1+ 7.Rh2 Qf1+ 8.Rg2 Qh1+ 9.Rh2 Qf1+ 10.Rg2 Qh1+
= (-0.02) Depth: 4/4 00:00:00
1.Rxe6 fxe6 2.Qd4 Qb1 3.Be4 Qg1 4.f3 Kf7 5.Qd6 Ra7 6.Rg2 Qh1+ 7.Rh2 Qf1+ 8.Rg2 Qh1+ 9.Rh2 Qf1+ 10.Rg2 Qh1+
= (-0.02) Depth: 6/6 00:00:00
1.Rxe6 fxe6 2.Qd4 Qb1 3.Be4 Qg1 4.f3 Kf7 5.Qd6 Ra7 6.Rg2 Qh1+ 7.Rh2 Qf1+ 8.Rg2 Qh1+ 9.Rh2 Qf1+ 10.Rg2 Qh1+
= (-0.02) Depth: 8/8 00:00:00
1.Rxe6 fxe6 2.Qd4 Qb1 3.Be4 Qg1 4.f3 Kf7 5.Qd6 Ra7 6.Rg2 Qh1+ 7.Rh2 Qf1+ 8.Rg2 Qh1+ 9.Rh2 Qf1+ 10.Rg2 Qh1+
= (-0.02) Depth: 9/9 00:00:00
1.Rxe6 fxe6 2.Qd4 Qb1 3.Be4 Qg1 4.f3 Kf7 5.Qd6 Ra7 6.Rg2 Qh1+ 7.Rh2 Qf1+ 8.Rg2 Qh1+ 9.Rh2 Qf1+ 10.Rg2 Qh1+
= (-0.02) Depth: 10/10 00:00:00
1.Rxe6 fxe6 2.Qd4 Qb1 3.Be4 Qg1 4.f3 Kf7 5.Qd6 Ra7 6.Rg2 Qh1+ 7.Rh2 Qf1+ 8.Rg2 Qh1+ 9.Rh2 Qf1+ 10.Rg2 Qh1+
= (-0.02) Depth: 10/10 00:00:00 4kN
1.Rxe6 fxe6 2.Qd4 Qb1 3.Be4 Qg1 4.f3 Kf7 5.Qd6 Ra7 6.Rg2 Qh1+ 7.Rh2 Qf1+ 8.Rg2 Qh1+ 9.Rh2 Qf1+ 10.Rg2 Qh1+
= (-0.02) Depth: 11/11 00:00:00 5kN
1.Rxe6 fxe6 2.Qd4 Qb1 3.Be4 Qg1 4.f3 Kf7 5.Qd6 Ra7 6.Rg2 Qh1+ 7.Rh2 Qf1+ 8.Rg2 Qh1+ 9.Rh2 Qf1+ 10.Rg2 Qh1+
= (-0.02) Depth: 11/11 00:00:00 5kN
1.Rxe6 fxe6 2.Qd4 Qb1 3.Be4 Qg1 4.f3 Kf7 5.Qd6 Ra7 6.Rg2 Qh1+ 7.Rh2 Qf1+ 8.Rg2 Qh1+ 9.Rh2 Qf1+ 10.Rg2 Qh1+
= (-0.02) Depth: 11/11 00:00:00 6kN
1.Rxe6 fxe6 2.Qd4 Qb1 3.Be4 Qg1 4.f3 Kf7 5.Qd6 Ra7 6.Rg2 Qh1+ 7.Rh2 Qf1+ 8.Rg2 Qh1+ 9.Rh2 Qf1+ 10.Rg2 Qh1+
= (-0.02) Depth: 12/12 00:00:00 6kN
1.Rxe6 fxe6 2.Qd4 Qb1 3.Be4 Qg1 4.f3 Kf7 5.Qd6 Ra7 6.Rg2 Qh1+ 7.Rh2 Qf1+ 8.Rg2 Qh1+ 9.Rh2 Qf1+ 10.Rg2 Qh1+
= (-0.02) Depth: 12/12 00:00:00 6kN
1.Rxe6 fxe6 2.Qd4 Qb1 3.Be4 Qg1 4.f3 Kf7 5.Qd6 Ra7 6.Rg2 Qh1+ 7.Rh2 Qf1+ 8.Rg2 Qh1+ 9.Rh2 Qf1+ 10.Rg2 Qh1+
= (-0.02) Depth: 12/12 00:00:00 6kN
1.Rxe6 fxe6 2.Qd4 Qb1 3.Be4 Qg1 4.f3 Kf7 5.Qd6 Ra7 6.Rg2 Qh1+ 7.Rh2 Qf1+ 8.Rg2 Qh1+ 9.Rh2 Qf1+ 10.Rg2 Qh1+
= (-0.02) Depth: 13/13 00:00:00 14kN
1.Rxe6 fxe6 2.Qd4 Qb1 3.Be4 Qg1 4.f3 Kf7 5.Qd6 Ra7 6.Rg2 Qh1+ 7.Rh2 Qf1+ 8.Rg2 Qh1+ 9.Rh2 Qf1+ 10.Rg2 Qh1+
= (-0.02) Depth: 14/14 00:00:00 18kN
1.Rxe6 fxe6 2.Qd4 Qb1 3.Be4 Qg1 4.f3 Kf7 5.Qd6 Ra7 6.Rg2 Qh1+ 7.Rh2 Qf1+ 8.Rg2 Qh1+ 9.Rh2 Qf1+ 10.Rg2 Qh1+
= (-0.02) Depth: 15/15 00:00:00 32kN
1.Rxe6 fxe6 2.Qd4 Qb1 3.Be4 Qg1 4.f3 Kf7 5.Qb6 Qh1+ 6.Rh2 Qf1+ 7.Rg2 Qh1+ 8.Rh2 Qf1+ 9.Rg2 Qh1+ 10.Rh2
= (-0.01) Depth: 16/47 00:00:07 15529kN

(, Microsoft 09.12.2010)


New game
2r1b1k1/5p2/1R2nB2/1p2P2p/2p5/2Q1P2K/3R1PB1/r3q3 w - - 0 1

Analysis by Loop 2007 64-Bit:

1.Rbd6 Ra2 2.Be4 Nc5 3.Bf5 Qh1+ 4.Kg3 Qg1+ 5.Kh3
³ (-0.44) Depth: 6 00:00:00 192kN
1.Rbd6 Qc1 2.Rc2 Qb1 3.Qd2 b4 4.Qe2 Bb5
µ (-0.78) Depth: 7 00:00:00 397kN
1.Rbd6 Qc1 2.Rc2 Qb1 3.Qd2 b4 4.Qe2 Bb5 5.Be4
µ (-0.72) Depth: 8 00:00:00 703kN
1.Rbd6 Qc1 2.Rc2 Qb1 3.Rb2 Ng5+ 4.Kg3 Qf5 5.f4 Qg4+ 6.Kf2
µ (-1.05) Depth: 9 00:00:00 1402kN
1.Rbd6 Qc1 2.Rc2 Qb1 3.Rb6 Nc5 4.Rd6 Bd7+ 5.Kh4 Bf5 6.Rcd2
µ (-1.20) Depth: 10 00:00:00 3606kN
1.Rbd6 Rc1 2.Qa3 c3 3.Re2 Qxe2 4.Qxc1 Qxf2 5.Be4 b4 6.Rd1 c2 7.Rg1+ Kf8 8.Bd5
-+ (-2.86) Depth: 11 00:00:01 9970kN
1.Qc2 c3 2.Re2 Qd1 3.Bf3 Bd7 4.Qxd1 Rxd1 5.Kg2 Ra1 6.Rc2 Ra4 7.Rd6
µ (-1.17) Depth: 11 00:00:03 21356kN
1.Qc2 c3 2.Re2 Qd1 3.Bf3 Qf1+ 4.Bg2 Qb1 5.Be4 Qxc2 6.Rxc2 Bd7 7.Kg3 Ra4 8.Bf3 Kh7
µ (-1.17) Depth: 12 00:00:04 29779kN
1.Qc2 c3 2.Re2 Qd1 3.Qxd1 Rxd1 4.Rc2 Rd2 5.Rxd2 cxd2 6.Rd6 Rc2 7.Be4 Ra2 8.Kh4 Nc5
-+ (-1.53) Depth: 13 00:00:06 49825kN
1.Qc2 c3 2.Re2 Qd1 3.Be4 Bd7 4.Bh7+ Kf8 5.Qxd1 Rxd1 6.Kh2 Rc1 7.Rd6 Bc6 8.Ra2 Rh1+
-+ (-1.50) Depth: 14 00:00:12 94185kN
1.Qc2 c3 2.Re2 Qd1 3.Qxd1 Rxd1 4.Rc2 Rd2 5.Rxd2 cxd2 6.Rd6 Rc2 7.Be4 Ra2 8.Bb1 Rb2
-+ (-1.58) Depth: 15 00:00:23 176056kN
1.Rxe6 Bd7 2.Rxd7 Qxc3 3.Red6 Qc2 4.Rd8+ Kh7 5.Rxc8 Qf5+ 6.Kh2 Qxc8 7.Rd8 Qg4 8.Rh8+ Kg6
³ (-0.31) Depth: 15 00:00:51 400021kN
1.Rxe6 Bd7 2.Rxd7 Qxc3 3.Ree7 Qc2 4.Rxf7 Qf5+ 5.Kh2 Qxf2 6.Rg7+ Kf8 7.Rgf7+ Kg8 8.Rg7+ Kf8
= (0.00) Depth: 16 00:00:57 442921kN

(, Microsoft 09.12.2010)