Author: Bob Durrett
Date: 05:30:49 11/11/00
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On November 11, 2000 at 04:51:40, Jeremiah Penery wrote: >Nolot position #2 seems to satisfy your criteria (unless you consider it a >"theoretical forced win"): > >[D]r4rk1/pp1n1p1p/1nqP2p1/2b1P1B1/4NQ2/1B3P2/PP2K2P/2R5 w - - > >I'm not sure if any chess programs will find this quickly, but after a couple of >moves they'll find them quickly. Here's the solution: > >1. Rxc5 Nxc5 2. Nf6+ Kh8 3. Qh4 Qb5+ 4. Ke3! h5 5. Nxh5 Qd3+ 6. Kf2 Ne4+ 7. >fxe4, and white wins. This is a very pretty forced win. Thanks. After seeing this, the following conclusions appear to be evident: Positions where there is a forced win will probably satisfy the "ultimate intent." In other words, there may be only one move available in each position of the forced line, so the computer, like a human, will play the forced moves. If the forced line leads to checkmate, or to a theoretically won endgame, then the "ultimate intent" will have been satisfied. One would expect that an otherwise quiet position in which a capture has occurred would result in the computer program almost immediately settling on the recapture as being the only move. What I was really hoping for was a position for which there was NOT a theoretical forced win but which would, nonetheless, result in computer moves which could be demonstrated to lead to a lost position. In other words, a line where the computer program would make moves [where it would not change it's mind in any reasonable time] which could ultimately be shown [by, at least, a top GM] to lead to a lost position.
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