05 Jun '08 10:52>4 edits
Originally posted by Fat LadyI am inferior to you both OTB and here but lets just consider the options quickly.
I have to say I disagree with that assessment Dragon Fire. I think the endgame was incredibly difficult position to analyse.
Look at the position after White's 81st move:
[fen]8/1k1b1Q2/1p2p1P1/6q1/1P1p4/5P2/5K2/8[/fen]
Black to move
Here seadevil managed to accurately calculate that even though Cludi would queen two moves before him he would be a ...[text shortened]... eight points higher than seadevil's, but in correspondence he is on a completely level to me.
As I see it Seadevil has only 2 possible moves 81. ... Qd5 protecting the B or 81. ... Qe3+. 81. ... Qd2+ I am discounting fairly quickly as placing the Q in front of the pawn doesn't seem to make much sense whilst 81. ... Qh4+ allows the white King to approach the pawn and that cannot be right. If any other moves are in the frame it is beyond my chess playing ability to even find them.
So black merely needs to look at 2 moves. The obvious move to start on is 81. ... Qe3+ and if he cannot make that work he has no alternative but to protect the B. I suppose Qb5 does that also but placing the Q behind the pawn makes far more sense so I tend to discount this instantly also.
The question then arises that in deciding to play 81. ... Qd5 does black have to analyse the game out accurately? Now what I am trying to say is that whilst that would certainly be useful it is not essential as if black decides that other moves lose this becomes an only move and if it were me and I reached this conclusion I would play it feeling I might be lost but it was my best chance of pulling something out of the bag.
Sometimes you do this things come together and you win against the odds and in doing so it has not actually been necessary to analyse out everything accurately but just to find a move that gives you chances.
These calculations are deep and the variation is long and it may very well be that this is an area where human intuition sees more than an engine could (the calculations being beyond an engines horizon). After all cludi was accused of being an engine, although the allegation is (to the best of my knowledge) still unproven and he has left the site because of it, yet he has been out thought here.