Author: Robert Hyatt
Date: 07:14:56 07/12/99
Go up one level in this thread
On July 12, 1999 at 06:41:06, CLiebert wrote:
>Me be the following game between crafty 16-11 and comet b04
>would be helpful to improve king safety.
>The evaluations of crafty are very "interesting", look at this game...
>
You can adjust this yourself, easily. There is a very fine line between
attacking your opponent and attacking yourself. You will find example
games where _everybody_ gets this wrong. IE Rebel vs Rohde had Rebel
play f4 and 'self-attack' itself and get killed. The alternative for
crafty is to make it very passive. Which will stop this sort of loss,
but it leads to more 'boring' play...
And I'd bet that this sort of game is the exception rather than the rule,
which is how I want it.
>
>[Event "Crafty 16-11 5m/300"]
>[Site "Henstedt"]
>[Date "1999.07.12"]
>[Round "11.2"]
>[White "Comet B04"]
>[Black "Crafty 16.11"]
>[Result "1-0"]
>[PlyCount "71"]
>[EventDate "1999.07.11"]
>[Source "Lbt."]
>
>1. d4 {0} 1... Nf6 {0} 2. Nf3 {0} 2... d5 {0} 3. c4 {0} 3... c6 {0} 4. Nc3 {0}
>4... e6 {0} 5. e3 {0} 5... Nbd7 {0} 6. Bd2 {0.32/7 7} 6... dxc4 {0.15/9 10} 7.
>Bxc4 {0.50/8 12} 7... Bd6 {0.21/9 12} 8. Qe2 {(0-0) 0.58/7 7} 8... O-O {
>0.23/9 8} 9. O-O {0.40/7 6} 9... Nb6 {(Db6) 0.22/9 9} 10. Bd3 {(Lb3) 0.54/7 5}
>10... Nbd5 {(Te8) 0.27/8 8} 11. e4 {(Se5) 0.77/6 5} 11... Nxc3 {(Sf4) 0.37/9 8}
>12. bxc3 {0.84/8 6} 12... Be7 {0.40/10 8} 13. Rfb1 {(e5) 1.04/8 6} 13... Re8 {
>0.29/9 7} 14. e5 {1.20/8 6} 14... Nd7 {(Sd5) 0.33/10 7} 15. a4 {(De4) 1.30/7 5}
>15... Nf8 {(Da5) 0.29/9 7} 16. a5 {1.34/7 5} 16... Ng6 {0.29/9 8} 17. Be4 {
>1.25/7 5} 17... a6 {(Dc7) 0.43/8 6} 18. Rb6 {(Lc1) 1.38/7 5} 18... Nf8 {
>(Dc7) 0.40/8 6} 19. Qd3 {(Lc1) 1.34/7 5} 19... Qd7 {(Dc7) 0.37/8 6} 20. Ng5 {
>(Lg5) 1.48/7 6} 20... Bd8 {0.46/9 6} 21. Bxh7+ {(Tb4) 1.85/7 5} 21... Kh8 {
>0.13/10 7} 22. Qh3 {2.08/7 5} 22... Bxg5 {0.13/10 5} 23. Bd3+ {(Le4+) 2.08/7 4}
>23... Bh6 {0.64/10 7} 24. Bxh6 {(g4) 2.08/6 0} 24... gxh6 {0.09/9 5} 25. Qxh6+
>{2.08/5 1} 25... Kg8 {0.97/9 5} 26. Qg5+ {(Te1) 2.08/6 6} 26... Kh8 {0.00/9 5}
>27. Qh4+ {(Df6+) 1.96/6 5} 27... Kg8 {0.00/10 5} 28. Re1 {(Dg5+) 2.06/6 5}
>28... Ng6 {(Dd5) 0.00/7 5} 29. Qh6 {2.09/6 1} 29... Re7 {(Sf8) 0.49/9 4} 30.
>Re3 {2.76/6 5} 30... c5 {2.91/8 10} 31. Rh3 {4.98/6 4} 31... Qa4 {12.17/8 15}
>32. Rb1 {2.88/5 5} 32... Qb5 {(Td7) #4/7 20} 33. Bxg6 {#3/4 0} 33... Qf1+ {
>(Dxb1+) #3/8 4} 34. Rxf1 {(Kxf1) #2/1 0} 34... fxg6 {#2/9 3} 35. Qxg6+ {
>(Dh8+) #1/2 0} 35... Rg7 {(Kf8) #1/11 3} 36. Qe8# {#0/1 0} 1-0
>
>Also interesting: the crafty-history between 16.9 and 16.11:
>
>
>16.9 tuning to king safety. King in center of board was way too high
>*
>* which made the bonus for castling way too big. more fine-tuning
>*
>* on the new 'tropism' code (that tries to coordinate piece
>attacks *
>* on the king). it understands closeness and (now) open files for
>*
>* the rooks/queens. modified blocked center pawn code so that an
>*
>* 'outpost' in front of an unmoved D/E pawn is made even stronger
>*
>* since it restrains that pawn and cramps the opponent.
>*
>*
>*
>* 16.10 all scores are back to 16.6 values except for king safety, as
>*
>* these values played well. king safety is quite a bit different
>*
>* and now has two fine-tuning paramaters that can be set in the
>*
>* crafty.rc file (try help ksafety for more details, or see the
>new *
>* crafty.doc for more details. suffice it to say that you can now
>*
>* tune it to be aggressive or passive as you wish.
>*
>*
>*
>* 16.11 adjustment to king safety asymmetry to make Crafty a bit more
>*
>* cautious about starting a king-side attack. new "ksafe tropism"
>*
>* command allows the tropism scores (pulling pieces toward
>opponent *
>* king) to be adjusted up or down (up is more aggressive).
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