Undermining (chess) Undermining (chess) Undermining (also known as removal of the guard, or removing the defender) is a chess tactic in which a defensive piece is captured, leaving one of the opponent's pieces undefended or under-defended. The opponent has the unpalatable choice of recapturing or saving the undefended piece. A possible response is to sacrifice the piece whose defense was undermined before capturing the piece which just took the defender. Kramnik–Topalov in the seventh round of the 2004 Linares chess tournament reached the diagrammed position with White to play. The black knight on a4 is defended only by the black pawn on
Virtual Chess 64 Virtual Chess 64 Virtual Chess 64 is a chess simulation game for the Nintendo 64. It was released in 1998. The game features no true "completion" in the form of a goal or a score, so one could theoretically play an endless number of matches. When a piece is captured, a short animated cutscene plays back depicting the battle, as in 1988's "Battle Chess". "Virtual Chess 64" came with a basic text and visual tutorial written for beginners and novices about how to play chess. In the third section the tutorial continues explaining how to play using simple chess positions