New Quest — Chess Check
A winter evening in Dorpat draws restless students to a chessboard near the tiled stove. A bold declaration of checkmate collapses when a knight’s crooked path reveals a hidden threat. Professor Reichenstein insists that chess obeys strict rules, not intuition. Mihkel decides to test the question with his Logic Mill.
On the input tape, you’ll get the positions of a black king and a white piece. Your task is to determine whether the black king is in check.