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
When a white horse is not a horse way. Similarly with other terms, so that such words as 'horse' and 'white', being used to designate both the concrete particular and the abstract universal, thus hold two values. However, there are no contemporary histories of Chinese philosophy that subscribe to Feng Youlan's interpretation. Other philosophers and sinologists who have analyzed the dialogue include Graham, Hansen, Harbsmeier, Thompson, and Van Norden. In the Chinese philosophical tradition, the "Baima Lun"'s significance is evident from how many Chinese classic texts directly or indirectly discuss it. The "Liezi", which lists and criticizes the paradoxes of Gongsun Long as "perversions of reason and sense",