Author: Thorsten Czub
Date: 06:57:18 04/30/05
Go up one level in this thread
On April 30, 2005 at 03:42:28, Ed Schröder wrote: >Still Dark Thought easily could have won the game. Instead of 74..Kb1? > >74... Rxb2 75. Rxa4 Kd1 76. Ra3 Ke2 77. Kf5 Rb4 78. Kg6 Rf4 79. Kxg7 Rxf3 > >Ed i am talking about 80.Rc7 and later 82.Rb1 etc. CSTal knows that the king needs the contact of the pawns. and therefore it does not allow this contact. a rook alone cannot win, it needs support. a rook cannot mate alone. it needs king. a queen cannot mate alone. it needs king. etc. all this stuff, cstal knows. without search. in position after move 82. Dark thought and Ernst still thought for a win because he had it in his SEARCH. but ANY of his main lines startes with letting the king out of the prison. so all his main lines, no matter how deep they were, were rubbish. that was the idea of my example. it took ernst until move 105 to ACCEPT this. I guess all this knowledge NOT implemented was a reason that dark thought failes in the 74th move. until move 105 CSTal lets the black king not out of prison. i guess for those moves it would not have needed a search at all. it would have played it only by static evaluation.
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