Author: Uri Blass
Date: 13:03:21 04/28/05
Go up one level in this thread
On April 28, 2005 at 15:06:45, Dann Corbit wrote: >On April 28, 2005 at 08:18:45, Uri Blass wrote: > >>On April 28, 2005 at 07:41:55, Tony Werten wrote: >> >>>On April 28, 2005 at 02:49:31, Uri Blass wrote: >>> >>>>On April 27, 2005 at 23:50:41, K. Burcham wrote: >>>> >>>>> >>>>>Athlon 64 >>>>>2200 mhz >>>>>432 hash >>>>> >>>>>Shredder 8 >>>>> >>>>>6.e5 g6 7.Bxf7 Rxf7 8.exd6 exd6 9.Qdxd6 Rgg7 10.Qd8+ Rg8 11.Qfd4 Rgf8 12.Qhb8 >>>>>Rxd8 13.Qdxd8+ Kg7 14.Qg8+ Kh6 15.Qgf8+ Rg7 16.Qxf6 Rd7 >>>>> +- (61.81) Depth: 17/42 00:05:47 187909kN >>>>>6.e5 g5 7.Bxf7 Rxf7 8.exd6 e5 9.d7 h5 10.Qxe5 Rgf8 11.d8Q fxe5 12.Qxg5 Rd8 >>>>>13.Qxe5+ Kg8 14.Qxd8+ Rf8 15.Qxf8+ Kxf8 16.Qd6+ Ke8 17.Qg6+ Kd8 18.Qd4+ >>>>> +- (72.37) Depth: 17/46 00:12:13 395940kN >>>>>6.e5 g5 7.Bxf7 Rxf7 8.exd6 e5 9.d7 h5 10.Qxe5 Rgf8 11.d8Q fxe5 12.Qxg5 hxg4 >>>>> +- (72.62) Depth: 18/40 00:13:23 432967kN >>>>>6.e5 g5 7.Bxf7 Rxf7 8.exd6 e5 9.d7 h5 10.Qxe5 Rgf8 11.d8Q fxe5 12.Qxg5 Rg8 >>>>>13.Qh6+ Rh7 14.Qdxh7# >>>>> +- (73.12) Depth: 18/40 00:13:32 437356kN >>>>> >>>>>kburcham >>>> >>>>No mate? >>>> >>>>What is the last move in the pv if not >>>>14.Qdxh7#? >>> >>>"+- (73.12)" is output from the engine and "14.Qdxh7#" (specially the #) is >>>output from the GUI. They don't have to be the same ie they don't both have to >>>realize it's a checkmate. >>> >>>Tony >> >>73.12 is only evaluation >> >>I responded to no mate. >>There is a mate in the line that was posted so no mate in the thread is wrong. >> >>I can add that by the chess rules even if the engine gives mate without >>understanding that it is a mate because of some bug it wins the game. > >Many times, at the end of a pv, you will see a checkmate, when (in fact) it is >not a checkmate. The reason is simple: >The quiesce function ended in checkmate. > >If the entire pv is printed (including quiesce) you will frequently see >checkmates in the pv when the engine is not sure about it yet. > >Sometimes they do turn into checkmates, and sometimes they don't for obvious >reasons. I know it but no mate in the title was wrong. Note that Movei will never show mate in the pv unless there is a mate(to be more correct today it does not show mate score but it is possible to translate scores that are big enough to mate). if The quiesce function of movei ends in checkmate then Mate is returned and not a different value. Uri
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