Enter Your Reply The Comment You're Replying To David Paulowich wrote on Wed, Feb 1, 2012 01:01 AM UTC:The question of sufficient mating force becomes more complex on larger boards. See the thread 12x12_checkmate for some interesting results obtained by H. G. Muller. In particular, both the Commoner (FW) and the Half-Duck (HFD) may fail to force mate against a lone King on a 16x16 board. A 12x12 board can be 'too large' for the Woody Rook (WD) or even the (WAD) piece. Edit Form You may not post a new comment, because ItemID SOVEREIGN_P_Ts does not match any item.