Author: Albert Bertilsson
Date: 02:21:18 03/21/03
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>I agree that at the level of your program more than 50 plies are not needed but >I am surprised that you get more than 50 plies with only check extension and bad >move ordering. > >Maybe you should ask your program to print for you the line of 50 plies that it >gets. > >If you search 50 plies than at depth 10 you should have 30 checks out of the >first 40 moves even if you have 10 captures in the qsearch and it always almost >does not happen because usually the opponent does not reply to check by a check >and having 10 captures in the qsearch is also rare. > >Uri I've only noticed this happening very few times, actually without check extensions, but the general situation when it happens: Both sides have a piece that they need to protect or defend, if they don't the loose almost immediatly. So the line is a series of moves from both sides trying to vary their game to push the inevitable draw forward. When this happens in a game some 20 very similar moves are played, that only very slightly avoids the draw by repetiotion. Then the game usally ends by a draw, or that the pieces are both captured, and then only two kings or something like it are left on the board. Anyway the concept of letting the engine search to depth 1000 isn't alowable since it would cause the move buffer to overflow. Anyway I increased the limit to 100, just in case. /Regards Albert
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