Chess Board
[ECO code B30]
SICILIAN DEFENCE - Rossolimo Var.
(The) Noah's Ark Trap
White's bishop retreated disastrously to the QR-file (the a-file), trying to maintain the half-pin.
Black advances his QKtPawn to QKt4(b5) and White must now lose the bishop for a pawn (ie. 5.B-Kt3..P-B5). A typical Noah's Ark Trap (qv.).
	White	Black
 1.	P-K4	P-QB4
 2.	Kt-KB3	Kt-QB3
 3.	B-Kt5	P-QR3
 4.	B-R4??	P-QKt4
Example ends: Undo or Jump or Clear