Author: Sune Larsson
Date: 13:45:32 03/02/01
Go up one level in this thread
On March 02, 2001 at 16:35:09, Miguel A. Ballicora wrote: >On March 02, 2001 at 14:39:10, Sune Larsson wrote: > >> >> 1k3b1q/pP2p1p1/P1K1P1Pp/7P/2B5/8/8/8 w - - 0 1 >> >> Horwitz,B 1885 >> >> This one might prove as mission impossible. Black is totally paralysed >> from start and white is winning - but how?? Maybe more amusing for >> humans than for silicons. One could characterize black's position >> as slightly passive ;) but how could white make progress. Looks hard... >> >> Test: Win it! Draw scores like 0.00 are not trusted... >> >> Sune > >My humble Gaviota (experimental version) sees the winning line giving and >advantage at ply 13 after 1.7 seconds. > >+-----------------+ >| . k . . . b . q | >| x o . . x . x . | >| o . K . o . o x | >| . . . . . . . o | >| . . B . . . . . | >| . . . . . . . . | >| . . . . . . . . | >| . . . . . . . . | >+-----------------+ > >Ply: 12 >Bc4-d3 Qh8-g8 Bd3-c4 Qg8xe6 Bc4xe6 >Score: 0.00 (0) Evals: 9473 Time: 0.2s nps: 161868 Q/all: 0.04 > nodes cutoffs missed tree_exp >path 34339 8610 229 1.03 >quies 1272 784 70 1.09 >all 35611 9394 299 1.03 >hashtable= attempts: 34102 hits: 55.6% perfect: 38.5% >Accum. TOTAL--> Time: 0.44s Nodes: 69129 nps: 157111 > >Ply: 13 >Kc6-d5 Qh8-g8 Bc4-b5 Kb8-c7 Bb5-e8 Qg8-h8 Be8-f7 Kc7-b6 > b7-b8=Q8 Kb6xa6 Qb8-f4 >Score: 0.15 (39) Evals: 23721 Time: 0.5s nps: 162469 Q/all: 0.05 > nodes cutoffs missed tree_exp >path 77529 19390 773 1.04 >quies 3868 2209 39 1.02 >all 81397 21599 812 1.04 >hashtable= attempts: 76836 hits: 52.2% perfect: 37.0% >Accum. TOTAL--> Time: 0.94s Nodes: 150526 nps: 159964 > >FAILED HIGH... > >Ply: 13 >Kc6-d5 >Score: 0.93 (239) Evals: 7532 Time: 0.1s nps: 140569 Q/all: 0.09 > nodes cutoffs missed tree_exp >path 16688 4571 346 1.08 >quies 1586 945 26 1.03 >all 18274 5516 372 1.07 >hashtable= attempts: 16632 hits: 39.7% perfect: 24.4% >Accum. TOTAL--> Time: 1.07s Nodes: 168800 nps: 157610 > >FAILED LOW... > >Ply: 13 > >Score: 0.93 (238) Evals: 32777 Time: 0.7s nps: 165908 Q/all: 0.04 > nodes cutoffs missed tree_exp >path 114663 27483 791 1.03 >quies 4957 2665 97 1.04 >all 119620 30148 888 1.03 >hashtable= attempts: 113941 hits: 55.8% perfect: 39.2% >Accum. TOTAL--> Time: 1.79s Nodes: 288420 nps: 160949 > >Ply: 14 >Kc6-d5 Qh8-g8 Bc4-b5 Qg8-h8 Bb5-e8 Qh8-g8 Be8-f7 Qg8xf7 > e6xf7 Kb8-c7 Kd5-e5 Kc7-b8 >Score: 0.59 (151) Evals: 582554 Time: 9.2s nps: 148486 Q/all: 0.10 > nodes cutoffs missed tree_exp >path 1237269 269770 54631 1.20 >quies 133698 61305 3180 1.05 >all 1370967 331075 57811 1.17 >hashtable= attempts: 1232493 hits: 48.7% perfect: 31.9% >Accum. TOTAL--> Time: 11.03s Nodes: 1659387 nps: 150511 > >Ply: 15 >Kc6-d5 Qh8-g8 Bc4-b5 Qg8-h8 Bb5-e8 Qh8-g8 Be8-f7 Qg8xf7 > g6xf7 Kb8-c7 Kd5-c5 g7-g5 h5xg6ep h6-h5 Kc5-d5 Bf8-g7 >Score: 0.89 (228) Evals: 48019 Time: 1.0s nps: 173134 Q/all: 0.06 > nodes cutoffs missed tree_exp >path 163716 37549 1564 1.04 >quies 9764 5007 54 1.01 >all 173480 42556 1618 1.04 >hashtable= attempts: 162287 hits: 59.8% perfect: 41.0% >Accum. TOTAL--> Time: 12.03s Nodes: 1832867 nps: 152396 Maybe Qh8 instead of taking the bishop on f7 could give white some more problems?!
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