Author: leonid
Date: 12:48:02 09/21/99
Go up one level in this thread
On September 21, 1999 at 11:13:51, Heiner Marxen wrote: >On September 20, 1999 at 20:07:30, leonid wrote: > >> >>For those who really like some big number of moves in one position. One of >>my old positions for solving the mate. White have 113 moves and make >>mate in 5. >> >> ------------------------------------------- >> | | | | | | | | |8 >> | | | | *R | | *Q | *K | *Q | >>-------------------------------------------- >> | | | | | | | | |7 >> | | | | | | *Q| *Q | *Q | >>-------------------------------------------- >> | | | | | | | | |6 >> | | | | | | | *Q | | >>-------------------------------------------- >> | | | | | | | | |5 >> | | | N | | | *R | | | >>-------------------------------------------- >> | | | | | | | | |4 >> | | | | | | | | | >>-------------------------------------------- >> | | | | | | | | |3 >> | Q | Q | Q | Q | Q | Q | Q | Q | >>-------------------------------------------- >> | B| | | | | | | |2 >> | | | | | | | Q | | >>-------------------------------------------- >> | | | | | | | | K |1 >> | | | | | | | | | >>-------------------------------------------- >> >> * - black color. >> >>Position created in 1996. > >FEN: 3r1qkq/5qqq/6q1/2N2r2/8/QQQQQQQQ/B5Q1/7K w - - > > Qxf7+ Q6xf7 Bxf7+ Qfxf7 Qxd8+ Qe8 Qaa2+ Rf7 Qfxf7# > >It is not free of duals, but it is not supposed to be so, right? >The key move Qxf7+ is unique. > >Heiner > I don't know if I understood correctly but if you wanted say that few moves can lead to the mate in the same position, I agree. I don't know exactly for this one but many have. When I want to see if few moves leading to the mate existe I ask the logic to find them all. Here logic said that mate existe in 5 moves. If some logic will find mate before this number it is buggy. Leonid.
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