Chess Board
[ECO code C40]
LATVIAN COUNTER-GAMBIT
Keres Var. - Poisoned Pawn Variation
White's checked King moves to K2(e2) and (like Black) foregoes all castling rights in the game.
Black pushes his QBPawn out to QB3(c6) giving his king an escape, but White with careful play has the advantage of greater development.
    White  Black     5.	P-Q4   QxP
 1. P-K4   P-K4	     6.	Q-R5 ch P-Kt3
 2. Kt-KB3 P-KB4!?   7.	B-B7 ch K-Q1
 3. B-B4   PxP	     8.	BxP    QxR ch
 4. KtxP   Q-Kt4     9.	K-K2   P-B3
Example ends: Undo or Jump or Clear