https://chessprogramming.wikispaces.com/Johannes+Zwanzger
Shredder versus Jonny, Shredder had a winning position, already about to announce mate in X. There would nothing wrong for Johannes to resign on behalf of Jonny. Apparently due to a bug, Shredder allowed a threefold repetition, still high plus score. Johannes, while his engine had a zero score, and the external GUI a "Threefold repetition" Infobox popped up, decided that Info is no draw-claim and continued the game by making the move over the board. TD Jaap van den Herik first miss understood, assuming Johannes would claim a draw rather than asking to continue
ICCF - Correspondence Chess
ComputerunterstĂŒtztes Fernschach
