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Subject: Re: chessmaster's mate in 14 in the Rxf7 problem:

Author: Uri Blass

Date: 04:24:30 09/20/00

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On September 20, 2000 at 04:17:41, Uri Blass wrote:

>On September 19, 2000 at 22:31:42, Dann Corbit wrote:
><snipped>
>>[D]2r3kr/5pp1/7p/3PQRb1/ppq1B3/8/PPP3PP/1K1R4 w - - acd 16; acn 287155000; ce
>>1150; pv Rxf7 Bf6 Rxf6 gxf6 Qe6+ Kf8 Qxf6+ Kg8 Qe6+ Kf8; pm Rxf7; id "C.A.P.
>>1418836"; c0 "Mark Young on September 15, 2000 at 00:29:11";
>
>Chessmaster6000 can see mate in 20 at depth 2/12(time 19:12) and does not change
>its mind at depth 3/13 or 4/14
>
>pv Rxf7 Bf6 Rxf6 gxf6 Qe6+ Kf8 Qxf6+ Kg8 Bf5 Qc7 d6 Qg7 d7 Rd8 Qxd8+ Kf7 Qc7
>Rd8 Qxd8 Qf6 Qxf6+ Kxf6
>
>I do not post more moves because my screen is too short but in this line there
>is a shorter mate than mate in 20 so I suspect that there is a shorter mate.
>
>I think that the result of mate is better than the result of mark young that
>does not give a forced mate inspite of the fact that chessmaster did not see 16
>plies.
>
>Uri

Chessmaster found mate in 14 at depth 5/15 after some hours

pv Rxf7 Bf6 Rxf6 gxf6 Qe6+ Kf8 Qxf6+ Kg8 Re1 Qb5 d6 Rc5 Qe6+ Kg7 Qe7+ Kg8 d7
Qd3 Qe8+ Kg7 Qg6+ Kf8 Qf6+ Kg8 Bh7+ Rxh7 Re8#

Uri



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