Check out Grant Acedrex, our featured variant for April, 2024.


[ Help | Earliest Comments | Latest Comments ]
[ List All Subjects of Discussion | Create New Subject of Discussion ]
[ List Earliest Comments Only For Pages | Games | Rated Pages | Rated Games | Subjects of Discussion ]

Single Comment

Carpenter. compound of Knight and Dabbaba.[All Comments] [Add Comment or Rating]
H. G. Muller wrote on Thu, Jul 3, 2008 05:09 PM UTC:
I can confirm that this piece has mating potential on an 8x8 board. My tablebase builder says for the King + Carpenter vs King endgame that it is almost always won if the side with the Carpenter has the move. There are only 196 exceptions to this (out of ~ 250,000 positions) where the Carpenter is under diagonal attack in a corner, and its King is too far away to protect it after it moves.

Longest mate against optimal defense is 31 moves. There are 100 such positions, e.g. w:Ka1, Carpenter g7, b:Kf6.

I am not sure what the interest of 12x12 boards is. Perhaps I should modify my EGTB generator to handle 16x16 board or even 32x32 boards. The current version can do upto 5 men on 8x8, but with the same memory usage it could still handle 3 men on 32x32. And I can always limit it to a subset of the board.