You are viewing a single comment's thread from:RE: Chess problem 52, and the "null-move heuristic". / Schachaufgabe 52 und die "Null-Zug-Suche".View the full contextView the direct parenticeblue (54)in #chess • 8 years ago (edited)in addition: if Qf4 6.g3!+ then :-) Qxg3 7. Bxg3 check mate.