In chess, a swindle is a ruse by which a player in a losing position tricks their opponent and thereby achieves a win or draw instead of the expected loss.[1][2][3][4][5] It may also refer more generally to obtaining a win or draw from a clearly losing position.[6] I. A. Horowitz and Fred Reinfeld distinguish among "traps", "pitfalls", and "swindles". In their terminology, a "trap" refers to a situation where players go wrong through their own efforts. In a "pitfall", the beneficiary of the pitfall plays an active role, creating a situation where a plausible move by the opponent will turn out badly. A "swindle" is a pitfall adopted by a player who has a clearly lost game.[3] Horowitz and Reinfeld observe that swindles, "though ignored in virtually all chess books", "play an enormously important role in over-the-board chess, and decide the fate of countless games".[7]
Although "swindling" in general usage is synonymous with cheating or fraud, in chess the term does not imply that the swindler has done anything unethical or unsportsmanlike.[8][9] There is nonetheless a faint stigma attached to swindles, since players feel that one who has outplayed one's opponent for almost the entire game "is 'morally' entitled to victory"[10] and a swindle is thus regarded as "rob[bing] the opponent of a well-earned victory".[11] The best swindles can be quite artistic, however, and some are widely known.
There are ways that players can maximize their chances of pulling off a swindle, including playing actively and exploiting time pressure.[citation needed] Although swindles can be effected in many different ways, themes such as stalemate, perpetual check, and surprise mating attacks are often seen.
The ability to swindle one's way out of a lost position is a useful skill for any chess player and according to Graham Burgess is "a major facet of practical chess".[5][12] Frank Marshall may be the only top player who became well known as a frequent swindler.[13] Marshall was proud of his reputation for swindles,[14] and in 1914 wrote a book entitled Marshall's Chess "Swindles".[15][16][17]