Saturday, January 21, 2012

iCE is a winner in the local newspaper chess study challenge

Our local newspaper organizes once a year a local chess challenge with 1 chess study a week (5 in total) of increasing difficulty. Me and my engine were taking part this year and with a bit of luck we were the lucky winners of the 3rd challenge, a really nice Mate in 4 problem.

Mate in 4, Study by Frank Fiedler

White must take care not to stalemate the black king, so the rook must be blocked in its mobility for a moment. The correct solution is 1. Rh4 !

iCE 0.3 v2058 by Thomas Petzke
position fen 2b5/1p1p4/1P1P4/ppBP1B2/k2p1R2/N2P4/K1P1P3/8 w - - 0 1
go depth 10
info depth 1 seldepth 7 time 0 nodes 72 pv c5d4  nps 71999 score cp 1526
info depth 2 seldepth 8 time 0 nodes 186 pv c5d4 b5b4  nps 185999 score cp 1510
info depth 3 seldepth 10 time 0 nodes 813 pv c5d4 b5b4 nps 812999 score cp 1518
info depth 4 seldepth 12 time 16 nodes 1894 pv c5d4 b5b4 nps 118375 score cp 1507 

info depth 5 seldepth 18 time 15 nodes 6381 pv c5d4 b5b4  nps 425400 score cp 1531 
info depth 6 seldepth 20 time 63 nodes 13244 pv c5d4 b5b4 nps 210222 score cp 1629 
info depth 7 seldepth 28 time 94 nodes 53632 pv c2c4 b5b4 nps 570553 score cp 1660 
info depth 8 seldepth 41 time 156 nodes 289838 pv f5g4 b5b4 nps 1857935 score mate 5 
info depth 9 seldepth 9 time 125 nodes 375331 pv f4h4 b5b4 f5g4 b4a3 c2c4 d4c3 g4d7  nps 3002648 score mate 4
bestmove f4h4 ponder b5b4


So as iCE really needs a hardware upgrade, I'm running and developing it on a 6 year old desktop PC which must be replaced urgently the prize money of 30€ might earn it an additional GB of RAM in the new system.