Author: Steffen Basting
Date: 09:54:03 08/01/04
Go up one level in this thread
Hi Gerd! Thanks for replying! >Mate in 4 should be independent from search depth. >Isn't the game over after Rh8#? Yes, of course :-) >Seems that you don't terminate your PVs correctly. I've just fixed this. It now says: 0.00s 1= 315 187 f4f1 0.00s 2= 1926 148 f4f1 d7c7 0.04s 3= 23053 131 f4f2 e6g4 e1e8 a8e8 d4a7 0.20s 4= 93395 89 e1d1 f7f6 g5h4 a8c8 0.87s 5= 515342 97 f4f1 f7f6 g5f4 e6f5 e1c1 2.48s 6= 1452346 68 f4f1 e6f5 c2c3 e8e1 f1e1 a8e8 e1d1 e8e2 6.68s 7= 4129525 70 f4f2 e6g4 e1f1 f7f6 g5f4 d7e6 f4c7 8.57s 8= 5185655 120 f4f2 e6g4 e1f1 f7f6 g5f4 g6g5 f4d6 d7d6 8.58s 8+ 5195575 370 f4f2 e6g4 e1f1 f7f6 g5f4 g6g5 f4d6 d7d6 8.60s 8+ 5205409 870 f4f2 e6g4 e1f1 f7f6 g5f4 g6g5 f4d6 d7d6 8.73s 8++ 5296335 #4 d4g7 g8g7 g5f6 g7g8 f4h4 e6f5 h4h8 # 9.09s 9= 5529524 #4 d4g7 g8g7 g5f6 g7g8 f4h4 e6f5 h4h8 # 9.64s 10= 5896253 #4 d4g7 g8g7 g5f6 g7g8 f4h4 e6f5 h4h8 # 11.86s 11= 7560467 #4 d4g7 g8g7 g5f6 g7g8 f4h4 e6f5 h4h8 # 19.04s 12= 12961258 #4 d4g7 g8g7 g5f6 g7g8 f4h4 e6f5 h4h8 # 34.34s 13= 23696937 #4 d4g7 g8g7 g5f6 g7g8 f4h4 e6f5 h4h8 # >How to translate your mate scores? When a mate occurs, I return 20000+depth so that "short" mates are preferred. But you were right, I forgot to set the counter to 0 then, this caused those strange lines. >1.bugs Yeah, there are probably plenty of them :-) >2.better eval Does eval have such a positive effect on depth / node ratio? >3.carefull with R==3 near the leaves, checks in qsearch? Yes, R=3 seems to be dangerous sometimes. I now use R=2 when the depth is low. I don't use checks in qsearch (yet)... >4.SEE or more sophisticated move ordering, checks, putting pieces enprise, > at interior nodes one may use more expensive move scoring/sorting. >5.hashing score and bounds or flags as well. >6.fractional extension/reductions. >7.tuning. 4-7 will be done after I've finished with 1 ;-) Thanks again, Steffen
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