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Subject: Re: pretty hard

Author: Uri Blass

Date: 06:54:08 11/20/05

Go up one level in this thread


On November 20, 2005 at 09:09:07, Will Singleton wrote:

>[d]2bk3r/q5b1/p2pp2p/1p6/1P6/5Q2/P1P2RPP/5R1K w - - bm Qg3; "26.Qg3";
>
>26.Qc6 and Qg4 seem to lead to forced rep draws, while Qg3 gives white
>winning chances.  To solve this, your program should show a plus score for
>Qg3, since an eval of 0 or less would be equal or inferior to at least 2
>other moves.

Even finding a draw score is not easy and Movei needs almost 3 minutes to do it

It finds draw score with the correct move but needs a long time to fail high and
see that Qg3 is more than a draw(almost 15 minutes and even after more than 30
minutes did not solve the fail high)

setboard 2bk3r/q5b1/p2pp2p/1p6/1P6/5Q2/P1P2RPP/5R1K w - -
analyze
 1 -67 0 55  f3c6
2 -97 0 108 f3c6
 2 -112 0 145  f3c6 g7e5
2 -111 0 373 f3f7
 2 -92 0 409  f3f7 a7f7 f2f7
 2 -92 0 440  f3f7 a7f7 f2f7
3 -122 0 456 f3f7
 3 -125 0 518  f3f7 a7f7 f2f7 g7d4
3 -124 1 740 f3c6
3 -95 1 953 f3c6
 3 -29 1 1406  f3c6 a7d7 c6b6 d8e8
 3 -29 1 2101  f3c6 a7d7 c6b6 d8e8
 4 -2 1 2910  f3c6 a7d7 c6b6 d8e8 f2e2
 4 -2 1 4177  f3c6 a7d7 c6b6 d8e8 f2e2
5 -32 1 5403 f3c6
 5 -65 1 7729  f3c6 a7d7 c6b6 d8e8 f2d2 g7e5
 5 -65 4 15198  f3c6 a7d7 c6b6 d8e8 f2d2 g7e5
6 -35 7 30999 f3c6
 6 -54 7 34856  f3c6 a7d7 c6b6 d8e8 f1d1 g7e5 f2f3
 6 -54 17 76907  f3c6 a7d7 c6b6 d8e8 f1d1 g7e5 f2f3
 7 -72 21 93818  f3c6 a7d7 c6e4 d7e7 f2f7 h8f8 f7f8 g7f8
7 -71 35 167148 f3g4
7 -42 43 202336 f3g4
 7 0 51 235389  f3g4 h8g8 f2f7 a7d4 f1f4 d4a1 f4f1 a1d4
 7 0 53 245948  f3g4 h8g8 f2f7 a7d4 f1f4 d4a1 f4f1 a1d4
8 -30 54 256860 f3g4
 8 -68 62 290432  f3g4 h8g8 f2f7 a7d4 f1f4 d4e5 f4f1 c8d7 g4h4 d8c8
8 -67 70 328004 f3c6
 8 -40 82 378217  f3c6 a7d7 c6e4 d7e7 f2f7 h8f8 f7f8 g7f8 e4c6
 8 -40 115 553278  f3c6 a7d7 c6e4 d7e7 f2f7 h8f8 f7f8 g7f8 e4c6
9 -70 123 588532 f3c6
 9 -75 143 675072  f3c6 a7d7 c6e4 d7e7 e4e3 d8e8 e3b6 g7e5 f2d2
9 -74 154 722639 f3g4
 9 -68 171 805723  f3g4 a7d4 f2f4 d4e5 f4f7 h8g8 f7a7 e5g5 g4e4
9 -67 306 1459636 f3g3
9 -38 329 1573460 f3g3
 9 7 375 1783898  f3g3 a7d4 f2f4 d4e5 g3f2 d8c7 f4f7 c7c6 f2f3 d6d5 f1d1
 9 7 384 1827838  f3g3 a7d4 f2f4 d4e5 g3f2 d8c7 f4f7 c7c6 f2f3 d6d5 f1d1
10 -23 414 1981177 f3g3
 10 -51 468 2247288  f3g3 a7d4 f2f4 d4c3 g3h4 d8c7 f4f3 c3d4 h4e7 c7c6 f3f4 d4c3

 10 -51 743 3642146  f3g3 a7d4 f2f4 d4c3 g3h4 d8c7 f4f3 c3d4 h4e7 c7c6 f3f4 d4c3

11 -81 823 4050413 f3g3
 11 -84 951 4675452  f3g3 a7d4 f2f4 d4c3 f1f3 c3e5 g3h4 e5g5 h4f2 h8e8 f2b6 d8d7
 g2g3
11 -83 1165 5747575 f3g4
11 -54 1275 6278380 f3g4
 11 -60 1371 6753342  f3g4 a7d4 f2f4 d4e5 f4f7 h8g8 f1d1 d6d5 f7a7 e5g5 g4f3
11 -59 2295 11220051 f3c6
 11 -48 2400 11737932  f3c6 a7d7 c6e4 d7e7 e4c6 h8f8 c6b6 d8d7 f2f8 g7f8 b6a7 d7
c6 a7d4
 11 -48 2820 13804822  f3c6 a7d7 c6e4 d7e7 e4c6 h8f8 c6b6 d8d7 f2f8 g7f8 b6a7 d7
c6 a7d4
12 -78 3015 14723831 f3c6
 12 -71 3301 16081154  f3c6 a7d7 c6e4 d7e7 e4c6 h8f8 c6b6 d8d7 f2f8 g7f8 h1g1 f8
g7 f1e1
12 -70 3457 16845408 f3g4
 12 -61 3715 18152198  f3g4 a7d4 f2f4 d4e5 f4f7 h8g8 g4f3 d6d5 f3f2 d5d4 f2h4 e5
g5 h4e4
 12 -61 6732 32943659  f3g4 a7d4 f2f4 d4e5 f4f7 h8g8 g4f3 d6d5 f3f2 d5d4 f2h4 e5
g5 h4e4
 13 -56 7589 37250679  f3g4 a7d4 f2f4 d4e5 f4f7 h8g8 g4f3 e5c3 f1d1 c3f3 d1d6 d8
e8 f7f3 g7e5
13 -55 15001 73351602 f3g3
13 -26 15648 76171458 f3g3
 13 0 17515 84954785  f3g3 a7d4 f2f4 d4c3 g3h4 d8d7 h4f2 g7e5 f4f7 d7c6 f2a7 d6d
5 a7a8 c6b6 a8a7 b6c6
 13 0 18284 89297287  f3g3 a7d4 f2f4 d4c3 g3h4 d8d7 h4f2 g7e5 f4f7 d7c6 f2a7 d6d
5 a7a8 c6b6 a8a7 b6c6
 14 0 20107 98521778  f3g3 a7d4 f2f4 d4c3 g3h4 d8d7 h4f2 g7e5 f4f7 d7c6 f2a7 d6d
5 a7a8 c6b6 a8a7 b6c6
 14 0 24534 122291678  f3g3 a7d4 f2f4 d4c3 g3h4 d8d7 h4f2 g7e5 f4f7 d7c6 f2a7 d6
d5 a7a8 c6b6 a8a7 b6c6
 15 0 28157 140991359  f3g3 a7d4 f2f4 d4c3 g3h4 d8d7 h4f2 g7e5 f4f7 d7c6 f2a7 d6
d5 a7a8 c6b6 a8a7 b6c6
 15 0 38595 196998084  f3g3 a7d4 f2f4 d4c3 g3h4 d8d7 h4f2 g7e5 f4f7 d7c6 f2a7 d6
d5 a7a8 c6b6 a8a7 b6c6
16 30 84675 412485524 f3g3
16 100 189456 896313467 f3g3



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