ChessGUI bug on ply 100 (50-move rule)
Posted: Thu Jan 20, 2011 10:55 pm
The final game of the TCEC Division I was a bit funky in the ending, but it uncovered a 50-move rule bug in ChessGUI. On the 100th ply, HIARCS underpromoted a pawn to a bishop. The GUI listing was
134.a8=B { ev=0.00, d=32, pd=Rxa8, mt=00:00:10, tl=00:08:43, s=14529 kN/s, tb=15005, }
1/2-1/2
{ Game Nr. 56 : Hiarcs 13.2 draws against Ivanhoe B47cB by 50-move rule
GameDuration = 05:29:06, Finalposition B1k5/5R2/8/8/8/2K5/8/r7 b - - 100 134 }