CCRL Discussion Board

The result. Out of 167,303,246,916 possible legal positions 52,048,121,059 are checkmates (31.11%). Out of the remaining 115,255,125,857 non-checkmate positions 48,713,659,039 are wins (for the side to move) (42.27%), 51,946,919,196 are losses (45.07%) and 14,594,547,622 are draws (12.66%). Summing...

The result. Out of 167,303,246,916 possible legal positions 52,048,121,059 are checkmates (31.11%). Having in mind the symmetry of white-black (positions where white checkmates the black side and black checkmate the white side, are equal), shouldn't this number be even and not odd? Or (i guess this...

After having computed a fair number of 7-man tablebases without pawns, Yakov Konoval and I have now started on endgames with pawns. These will be of more practical interest than the pawnless ones, although will likely contain no new depth records. We think that the 517 moves to conversion in QNxRBN...