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2knightsking vs pawnking endgame

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25th April 2009, 02:22am
#1
by darnok87
Poland
Member Since: Oct 2008
Member Points: 55

this is called to be the second trotsky line, and if black pawn is blocked by knight on or behind this line, white can force win within 50moves despite position of other pieces(b and g pawn in about 99% of  possible positions)

 

 

 

 

But look at this position, conditions are ok but my tablebases show that with best play mate is done in 60 moves! And i am asking, why is that, 2nd trotsky line is wrong?

25th April 2009, 11:01am
#2
by Scarblac
Arnhem Netherlands
Member Since: Nov 2008
Member Points: 1669

Troitzky's line is about which positions can be won at all, not won within 50 moves. There are many winning positions in this ending where the best line takes more than 50 moves.

25th April 2009, 11:10pm
#3
by darnok87
Poland
Member Since: Oct 2008
Member Points: 55

u are saying about 1st trotsky line, this is second, which is suppose to guarantee mate within 50 moves

 
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