Author: Vincent Lejeune
Date: 15:24:54 01/14/98
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On January 14, 1998 at 18:07:45, Stuart Cracraft wrote: >On January 14, 1998 at 16:53:06, Vincent Lejeune wrote: > >>I've red a book chess problem, and find the following position : >> >>[Event "?"] >>[Site "?"] >>[Date "??.??.????"] >>[Round "?"] >>[White "W"] >>[Black "B"] >>[Result "*"] >>[WhiteElo "?"] >>[BlackElo "?"] >>[FEN "8/7p/6pP/k4pP1/b1p1pP2/KpPpP3/1P1P4/7Q w - - 0 1"] >> >> >>and the book say : >> >>If it's white to moves, black are in zugzwang because after : >>1.Qd1 B moves 2.Qxc3 cxb3 3.Kxd3 , the 2 passed pawn win for white !!! >>I don't understand everything in the position (and I don't blame who >>don't understand like me ;) ). >> >>I look for someone who can analyse this position with a strong chess >>program... >> > >Well, don't know about the "strong", but here's my program's analysis. > >K2 1/13/98 0.19 >Type ? for help. >Transposition table: Entries=100K Size=6400K >Pawn transposition table: Entries=31K Size=2000K >? set time 60 >? test solve ../tests/testone.ci >60 seconds per problem. >lejeune >Qd1 > >white >. . . . . . . . >. . . . . . . p >. . . . . . p P >k . . . . p P . >b . p . p P . . >K p P p P . . . >. P . P . . . . >. . . . . . . Q > >Phase = Middlegame, Target search time = 60 sec, Root score = 442 > 1+ 0.0 697 3 Qh4 > 1. 0.0 603 17 Qh4 > 2- 0.1 431 56 Qh4 > 2& 0.1 426 64 Qh4 Kb5 > 2& 0.1 427 78 Qc1 Kb5 > 2. 0.1 431 86 Qd1 Kb5 > 3+ 0.1 697 161 Qd1 > 3. 0.1 603 202 Qd1 Kb5 Qa1 > 4- 0.1 446 266 Qd1 > 4. 0.1 446 311 Qd1 Kb5 Qe1 Ka5 > 5+ 0.1 697 531 Qd1 > 5. 0.1 603 706 Qd1 Kb5 Qe1 Ka5 Qa1 Kb5 > 6- 0.1 431 915 Qd1 > 6& 0.1 430 1160 Qd1 Kb5 Qe1 Ka5 Qf1 Kb5 > 6. 0.1 430 1414 Qd1 Kb5 Qe1 Ka5 Qf1 Kb5 Qa1 Ka5 Qe1 Kb5 >Qa1 > 7& 0.2 430 1699 Qd1 Kb5 Qe1 Ka5 Qf1 Kb5 Qa1 Ka5 Qe1 Kb5 >Qa1 > 7. 0.2 430 1942 Qd1 Kb5 Qe1 Ka5 Qf1 Kb5 Qa1 Ka5 Qe1 Kb5 >Qa1 > 8& 0.2 434 2571 Qd1 Kb5 Qe1 Ka5 Qf1 Kb5 Qa1 Ka5 Qf1 > 8. 0.2 434 2884 Qd1 Kb5 Qe1 Ka5 Qf1 Kb5 Qa1 Ka5 Qf1 > 9& 0.2 434 3271 Qd1 Kb5 Qe1 Ka5 Qf1 Kb5 Qa1 Ka5 Qf1 > 9. 0.2 434 3688 Qd1 Kb5 Qe1 Ka5 Qf1 Kb5 Qa1 Ka5 Qf1 >10& 0.3 430 4817 Qd1 Kb5 Qe1 Ka5 Qf1 Kb5 Qa1 Ka5 Qe1 Kb5 >Qa1 >10. 0.4 430 11420 Qd1 Kb5 Qe1 Ka5 Qf1 Kb5 Qa1 Ka5 Qe1 Kb5 >Qa1 >11+ 0.9 507 27335 Qd1 >11. 1.0 503 30122 Qd1 Kb5 Qf1 Ka5 Qh1 Kb5 Qa1 Ka5 Qh1 >12- 2.2 427 70920 Qd1 >12& 2.3 425 72688 Qd1 Bb5 Qa1 Ba6 Qf1 Kb5 Qe1 Ka5 Qa1 Kb5 >Qb1 > Ka5 Qa1 >12. 2.3 425 72756 Qd1 Bb5 Qa1 Ba6 Qf1 Kb5 Qe1 Ka5 Qa1 Kb5 >Qb1 > Ka5 Qa1 >13& 2.8 430 92382 Qd1 Bb5 Qa1 Be8 Qe1 Ba4 Qf1 Bb5 Qe1 Be8 >Qa1 > Bd7 Qe1 Bb5 Qa1 >13. 2.9 430 98266 Qd1 Bb5 Qa1 Be8 Qe1 Ba4 Qf1 Bb5 Qe1 Be8 >Qa1 > Bd7 Qe1 Bb5 Qa1 >14& 3.4 430 116144 Qd1 Bb5 Qa1 Be8 Qe1 Bb5 Qf1 Be8 Qa1 Bd7 >Qe1 > Bb5 Qf1 Be8 Qa1 Bd7 Qe1 Bb5 >14. 6.6 430 214074 Qd1 Bb5 Qa1 Be8 Qe1 Bb5 Qf1 Be8 Qa1 Bd7 >Qe1 > Bb5 Qf1 Be8 Qa1 Bd7 Qe1 Bb5 >15& 8.2 430 277129 Qd1 Bb5 Qa1 Be8 Qe1 Bb5 Qf1 Be8 Qa1 Bd7 >Qe1 > Bb5 Qf1 Be8 Qa1 Bd7 Qe1 Be8 Qa1 >15. 19.7 430 710557 Qd1 Bb5 Qa1 Be8 Qe1 Bb5 Qf1 Be8 Qa1 Bd7 >Qe1 > Bb5 Qf1 Be8 Qa1 Bd7 Qe1 Be8 Qa1 >16& 23.8 430 855943 Qd1 Bb5 Qa1 Ba4 Qh1 Be8 Qf1 Bd7 Qe1 Be8 >Qb1 > Bb5 Qa1 Ba4 Qh1 >16. 41.3 430 1430961 Qd1 Bb5 Qa1 Ba4 Qh1 Be8 Qf1 Bd7 Qe1 Be8 >Qb1 > Bb5 Qa1 Ba4 Qh1 Bb5 Qa1 >17& 49.1 430 1722280 Qd1 Bd7 Qa1 Ba4 Qb1 Bb5 Qe1 Bd7 Qa1 Ba4 >Qb1 > Bb5 >17. 54.6 430 1930188 Qd1 Bd7 Qa1 Ba4 Qb1 Bb5 Qe1 Bd7 Qa1 Ba4 >Qb1 > Bb5 Qa1 Be8 Qb1 Bb5 >18. 60.0 430 2144013 Qd1 Bd7 Qa1 Ba4 Qb1 Bb5 Qe1 Bd7 Qa1 Ba4 >Qb1 > Bb5 Qa1 Be8 Qb1 Bb5 > >My move is : Qd1 >Time = 60.0 Rate=35730 Nodes=[1536201/607812/2144013] >Eval=431520 RptCnt=11112 NullCut=100569 >Extensions: Check=151557 Recapture=15205 Pawn=135 OneMove=0 > Threat=0 DeepSearch=0 Mate=0 >Material=[1600/1000] Worst=[-1080/97] >Hash: Success=26% Collision=66% >Hash Counts: ReadHits=446157, ReadProbes=1658921, WriteColl=326019, >WriteTries=493572 >Pawn Hash: Success=98% Collision=12% >Pawn Counts: ReadHits=853541, ReadProbes=862338, WriteColl=1095, >WriteTries=8797 > >black >. . . . . . . . >. . . . . . . p >. . . . . . p P >k . . . . p P . >b . p . p P . . >K p P p P . . . >. P . P . . . . >. . . Q . . . . > >+++ Qd1 Qd1 > >Correct so far: 1 Total problems: 1 Percent: 100% > >********* Grand totals ********** >Time = 60.0 Rate=35730 Nodes=[1536201/607812/2144013] >EvalCnt=431520 RptCnt=11112 NullCut=100569 >Extensions: Check=151557 Recapture=15205 Pawn=135 OneMove=0 > Threat=0 DeepSearch=0 Mate=0 >Hash: Success=26% Collision=66% >Pawn Hash: Success=98% Collision=12% So your program don't make any progress in the position !?
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