Author: Heiner Marxen
Date: 05:42:37 04/13/04
Go up one level in this thread
On April 12, 2004 at 19:39:25, Vaclav Visnadjek wrote: >On April 12, 2004 at 11:24:31, Heiner Marxen wrote: > >>On April 11, 2004 at 21:54:57, douglas calvert wrote: >> >>>On April 08, 2004 at 07:37:40, Jouni Uski wrote: >>> >>>>Most amteurs announce instantly mate in 12, so here's a little more difficult: >>>> >>>>[D]5b1k/p1p1pBp1/1pP1P1P1/1P4p1/8/8/6p1/6Kb w - - >>>> >>>>Mate in 31 >>>>Chest solves in 0,80s... >> >>That's ChestUCI (special mate mode), of course. >>Normal Chest has no chance, here. >> >>>>Jouni >>> >>>I am at a loss. Any hints? >> >>Without asking Chest, my warmware sees the zugzwang theme here: >>If white could pass (do null move) black were forced to move the g pawn. >>Do this 3 times, and we get a6 bxa6 and its over soon. >>Unfortunately I count more than 31 moves for this complete manoeuvre, >>so I appear to miss something. >> >>Cheers, >>Heiner > >1.Be8 Kg8 2.Bd7 Kh8 3.Bc8 Kg8 4.Ba6 Kh8 5.Bb7 Kg8 6.Bc8 Kh8 7.Bd7 Kg8 8.Be8 Kh8 >9.Bf7 g4 10.Be8 Kg8 11.Bd7 Kh8 12.Bc8 Kg8 13.Ba6 Kh8 14.Bb7 Kg8 15.Bc8 Kh8 >16.Bd7 Kg8 17.Be8 Kh8 18.Bf7 g3 19.Be8 Kg8 20.Bd7 Kh8 21.Bc8 Kg8 22.Ba6 Kh8 >23.Bb7 Kg8 24.Bc8 Kh8 25.Bd7 Kg8 26.Be8 Kh8 27.Bf7 a5 28.bxa6 b5 29.a7 b4 30.a8Q >b3 31.Qxf8# > >or something... Yes, exactly what I had in mind, except... I could not count to 2: somehow I thought the g-pawn had 3 steps... am I getting old? Thanks for counting to 2 :-)) Cheers, Heiner
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