Chess Board
[ECO code A40]
KOTOV-ROBATSCH DEFENCE
(towards Hippopotamus Defence)
White developed his king's knight to KB3(f3) to support his QP and control K5(e5).
Black's rare Queen's Pawn to Q3(d3) for ..QKt-Q2 (a Hippopotamus gateway) was seen in Petrosian-Spassky, W.Championship 1966 (game 12). B-Alt.
	White   Black
 1.	P-Q4    P-KKt3
 2.	P-QB4   B-Kt2
 3.	Kt-KB3  P-Q3!?
Example ends: Undo or Jump or Clear