Author: Jim Monaghan
Date: 11:03:50 07/31/04
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On July 31, 2004 at 12:29:03, Kurt Utzinger wrote: >Hi Jim > >The position below you have posted is indeed won >with 1...Rxd3 and transposition to a pawn ending. >Hiarcs 9 finds the move and I have inserted a >short analysis only to find no defence for White: [snip] Thanks Kurt. Of the 16 hard positions I pulled out of IQ, I was able on my PC to refute for various reasons 12 of them. Some had obvious alternate solutions (2 out of 16) which devalued them as puzzles. Most of them (8 out of 16) had subtle defences further down the tree that the human players missed, which actually refuted the combination or secured a draw, rather then losing. Some were just plain murky (2 out of 16) and not good test positions. I posted the remaining 4. Of those, it looks like IQ.1031 (thanks to Dann and Shredder) and IQ.1149 (thanks to you and Hiarcs) are fine. Uri refuted IQ.1027 with a subtle defense. The jury is out on IQ.1182, although I've played around with it and I think it's sound, but too difficult at this time for engines with today's hardware from the root. I'm going to add these three back in later and tinker with the scoring which is simply for fun anyway. Thanks again, Jim
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