Author: Mike Hood
Date: 20:27:08 07/10/03
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On July 10, 2003 at 15:04:25, Matthew White wrote: >Underpromotion position from >Chan - Depasquale >Laoag 1985 >[D]6k1/8/4p3/4Pp1p/5P1P/3Rn2K/6p1/8 b - - > >The only winning move is 1...g1=B! > >For example, 1...g1=Q 2. Rd8+ Kh7 (or Kf7 Rd7+ Ke8 Rd8+ etc) 3. Rh8+ Kxh8 (or >Kg7 Rg8+ Kxg8 stalemate) stalemate. > >Most engines see this, though it takes up to 8 ply or so most of the time... >wbNimzo2000 doesn't seem to be able to find the correct move. Nimzo8, OTOH, >does... Guess he found the bug :). Maybe it will help you find a bug too... > >Regards, >Matt Very nice, Matt... underpromotion to Bishop must be the rarest underpromotion. Do you know if underpromotion to a Bishop has ever occurred in top level chess? Or is it just a matter for concocted positions in textbooks?
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