Press 'j' to toggle standard and junior mode (low playing strength). Select white or black side on the start screen. When it is your turn, simply click the piece to move, then click target square. Castle by moving the king two squares first, none of the passed squares must be checked. For bug reports please describe exactly what happened, and if possible attach exported board data (the one before the engine's move took place). Simply click "Export", then look for the FEN board data and copy it to the clipboard. Alternatively you can also export the move list in PGN format (click "Moves"). Please also report the difficulty level, and if you are playing in junior mode. Before you post a bug, please go sure it really is a bug and not a misunderstanding, e.g. you may want to consult an experienced chess player beforehand. Thank you! Easy: 5 seconds think time. Junior mode: Immediate move. Medium: 15 seconds think time. Junior mode: Immediate move. Difficult: 30/20 seconds think time (midgame/endgame). Junior mode: 1 second think time. Press 'c' to toggle 60 seconds think time on Difficult Press 'd' for iterative deepening debug info Press 'p' for profiler mode