In the Fried Liver Attack (1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Nxd5 6.Nxf7 Kxf7 7.Qf3+ Ke6; see diagram), Black is okay in standard chess, but in hostage chess the line fails: White wins a knight with 8.Bxd5+, since if Black recaptures 8...Qxd5, White plays the hostage exchange 9.(N-B)B*f7+ (transferring the black knight in their prison to Black's airfield, then releasing the white bishop from Black's prison and dropping it on f7 with check) to win Black's queen.
Hostage chess is a chess variant invented by John A. Leslie in 1997.[1]Captured pieces are not eliminated from the game but can reenter active play through drops, similar to shogi. Unlike shogi, the piece a player may drop is one of their own pieces previously captured by the opponent. In exchange, the player returns a previously captured enemy piece which the opponent may drop on a future turn. This is the characteristic feature of the game.
Hostage chess has tactical subtlety and "tends to favour the attacker".[2][3] In 1999, David Pritchard called the game "the variant of the decade".[4] It was published in magazines Nost-algia (issue 375), Eteroscacco (86–88), and Variant Chess (32 and later[a]). It was the "Recognized Variant[5] of the Month" in January 2005 at The Chess Variant Pages.
This article uses algebraic notation to describe chess moves.
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