Chess Board
[ECO code E24]
NIMZO-INDIAN DEF. - Sämisch Var.
(The) Side Variation
White's QRP push attacked Black's dark bishop.
Black's Kt5(b4) Bishop withdraws to safety on K2(e7) - an illogical move that loses him a tempo and enables White to reply 5.P-K4 gaining space and advantage. B-Alt.
	White	Black
 1.	P-Q4	Kt-KB3
 2.	P-QB4	P-K3
 3.	Kt-QB3	B-Kt5
 4.	P-QR3	B-K2?!	?!=questionable
Example ends: Undo or Jump or Clear