Author: Will Singleton
Date: 00:00:10 10/30/05
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On October 29, 2005 at 22:13:35, John Merlino wrote: >On October 29, 2005 at 21:46:47, Will Singleton wrote: > >>Here are two positions from an ICC game today. A low-rated human played white >>against Amateur, apparently a king-attack specialist. The second position is >>what you get if you don't avoid the first. >> >>[d]rq3rk1/p2bbpp1/2p2n1B/4pP2/3pP3/3B3P/1PP1N1P1/R1Q2RK1 b - - am gxh6; "bm >>Nh7"; > >CM9_R1 on an AMD 2500 needs four seconds to avoid gxh6: > >Time Depth Score Positions Moves >0:00 1/3 -1.97 1657 1...gxh6 2.Qxh6 Qxb2 3.Qg5+ Kh8 > 4.Qh4+ Kg7 >0:00 1/4 -0.77 6717 1...gxh6 2.Qxh6 a5 3.Qg5+ Kh8 4.Qh4+ > Kg7 5.Rf3 >0:00 1/5 -1.36 29062 1...gxh6 2.Qxh6 Qd6 3.Qg5+ Kh8 > 4.Ng3 Nh7 >0:00 1/6 -0.66 103173 1...gxh6 2.Qxh6 Qd8 3.Rf3 Nh7 4.c3 > Bg5 5.Rg3 >0:00 1/7 0.00 160313 1...gxh6 2.Qxh6 Nh7 3.f6 Bxf6 4.Rxf6 > Nxf6 5.Qxf6 Qxb2 6.Qg5+ Kh7 7.Qh5+ > Kg8 8.Qg5+ >0:02 1/7 -0.04 455370 1...Nh7 2.Bd2 Qb7 3.Ra5 c5 4.Qa1 > a6 5.Ng3 >0:02 1/7 -0.15 512205 1...Qd6 2.Bd2 Qc7 3.c3 dxc3 4.Qxc3 > Qb6+ 5.Kh1 >0:04 1/8 -0.22 816681 1...Qd6 2.Bg5 c5 3.Ng3 Qc7 4.b3 > Rab8 5.Qa3 >0:09 1/9 -0.25 1941046 1...Qd6 2.Rf3 a5 3.Rg3 Nh5 4.Rg4 > Bf6 5.Ng3 Nxg3 6.Rxg3 >0:17 1/10 -0.36 3678613 1...Qd6 2.Rf3 a5 3.Rg3 Nh5 4.Rg4 > Kh8 5.Ng3 Qxh6 6.Qxh6+ gxh6 7.Nxh5 > Rg8 8.Rxg8+ Kxg8 >0:36 1/11 -0.30 8215407 1...Qd6 2.Rf3 a5 3.Rg3 Nh5 4.Rg4 > Kh8 5.Bd2 Nf6 6.Rg5 Nh7 7.Rg3 > >>[d]rq3rk1/p2bbp2/2p2n1Q/4pP2/3pP3/3B3P/1PP1N1P1/R4RK1 b - - am Nh7; "bm Qd6"; > >Are you sure that Qd6 is better? It looks like Black is screwed at this point. > >Here's what The King says: > >Time Depth Score Positions Moves >0:00 1/5 0.52 28489 1...Qd6 2.Rf3 Ng4 3.Qxd6 Bxd6 4.hxg4 > a5 >0:00 1/5 -0.43 36214 1...Ne8 2.f6 Bxf6 3.Rxf6 Nxf6 4.Qxf6 > Qxb2 5.Qg5+ Kh7 >0:00 1/5 -0.66 63325 1...Qd8 2.Rf3 Nh7 3.c3 Bg5 4.Rg3 >0:00 1/6 0.96 77867 1...Qd8 2.Rf3 Nh7 3.Rg3+ Ng5 4.h4 > Rb8 5.hxg5 Rxb2 6.Rxa7 >0:00 1/6 0.72 83612 1...Qd6 2.Rf3 Ng4 3.Qxd6 Bxd6 4.hxg4 > a5 5.Bc4 >0:00 1/6 0.00 100310 1...Nh7 2.f6 Bxf6 3.Rxf6 Nxf6 4.Qxf6 > Qxb2 5.Qg5+ Kh7 6.Qh5+ Kg8 7.Qg5+ >0:00 1/7 0.00 167195 1...Nh7 2.f6 Bxf6 3.Rxf6 Nxf6 4.Qxf6 > Qxb2 5.Qg5+ Kh7 6.Qh5+ Kg8 7.Qg5+ >0:01 1/8 0.00 359227 1...Nh7 2.f6 Bxf6 3.Rxf6 Nxf6 4.Qxf6 > Qxb2 5.Qg5+ Kh7 6.Qh5+ Kg8 7.Qg5+ >0:03 1/9 0.00 973759 1...Nh7 2.f6 Bxf6 3.Rxf6 Nxf6 4.Qxf6 > Qxb2 5.Qg5+ Kh7 6.Qh5+ Kg8 7.Qg5+ >0:09 1/10 0.06 2830218 1...Nh7 2.f6 Bxf6 3.Rxf6 Nxf6 4.Qg5+ > Kh7 5.Qxf6 Qxb2 6.Ra5 Qb1+ 7.Kh2 > c5 8.Qh4+ Kg8 9.Qg5+ Kh7 10.Rxc5 >0:31 1/11 0.44 9538146 1...Nh7 2.f6 Bxf6 3.Rxf6 Nxf6 4.Qxf6 > Re8 5.Rf1 Be6 6.Qh6 Qxb2 7.Qg5+ > Kh7 8.Qxe5 Rad8 9.Qh5+ Kg8 >1:10 1/12 1.04 20118789 1...Nh7 2.f6 Bxf6 3.Rxf6 Nxf6 4.Qxf6 > Re8 5.Rf1 Be6 6.Ng3 Qxb2 7.Nh5 > Kf8 8.Ng7 Kg8 9.Nxe8 Rxe8 10.Qxe5 >7:51 1/13 1.74 117023310 1...Nh7 2.f6 Bxf6 3.Rxf6 Nxf6 4.Qxf6 > Qd8 5.Qxe5 Qh4 6.Nxd4 Qh8 7.Qg3+ > Qg7 8.Qxg7+ Kxg7 9.Ra6 Rfb8 10.b3 > Rd8 11.Nxc6 Bxc6 12.Rxc6 > >And The King doesn't see anything better, at least not in under ten minutes.... > >jm Yes, Qd6 gives black a fighting chance, while Nh7 loses pretty quickly. But cm did well on the first problem, best I've seen. Will
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