Author: Vincent Diepeveen
Date: 04:49:19 01/13/00
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On January 13, 2000 at 02:19:29, Jeremiah Penery wrote: >On January 12, 2000 at 16:15:27, Bruce Moreland wrote: > >>On January 12, 2000 at 13:43:10, Bruce Moreland wrote: >> >>>On January 12, 2000 at 10:02:08, Vincent Diepeveen wrote: >>> >>>>Let's zoom into position #8 not found by Deep Thought >>>> >>>[D]r3rbk1/ppq2ppp/2b1pB2/8/6Q1/1P1B3P/P1P2PP1/R2R2K1 w - - bm Bxh7; 8 >>>> >>>>This position is of course in nolot as PC programs don't extend such >>>>lines too deeply. Just like the other nolots it only has to do with >>>>king safety and a lot of forced moves around the king. >>>> >>>>[c] ==> check extension >>>>[s] ==> singular best move extension >>>>[f] ==> forced move (a forced move is singular too) extension >>>> >>>>the TACTICAL line needed to find Bxh7: >>>> >>>>Bxh7+ Kxh7[c] >>>>Qh5+ Kg8[c] >>>>Rd4[s] gf6[f] >>> >>>Hsu points out that gxf6 is bad, and suggests that Bf3! holds. >>> >>>bruce >>> >>>>Rg4+[s] Bg7[c] >>>>Qh6[s] Kf8[f] >>>>Rxg7 Rec8 >>>>Qxf6 Be4[f] (otherwise rh7-h8 mate) >>>>Rae1[s] Bf5[f] >>>>g4[s] Bxc2[f] >>>>Rxe6[f] Bd3 >>>>Rg6[c] Qc1+ >>>>Kh2[c] Qc7+ >>>>f4[c] Qc2+ >>>>Kg3[c] <any legal move> >>>>Qh8 mates in quiescencesearch. >> >>Mine finds this now. The line in ply 15 after 2.5 hours is: >> >>+0.75 Bxh7+ Kxh7 Qh5+ Kg8 Rd4 Bf3 gxf3 Qxc2 > >Instead of Qxc2 here, I think black may still be able to save it with Qc5. I'm >interested to know what Ferret thinks of this. Not hard to tell. it's a full pawn up then, what do you think it will say then?
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