Chess Board
[ECO code D10] Move Move Here
TRANSPOSITION
SLAV DEFENCE to SEMI-SLAV DEFENCE
White's KP push defended his QP and freed his king's bishop to defend his QBP.
Black transposes into a Semi-Slav position by also setting his King's Pawn on K3(e6), blocking his QB but freeing his king's bishop for a 5..B-Kt5 pin. B-Alt.
	White	Black
 1.	P-Q4	P-Q4
 2.	P-QB4	P-QB3
 3.	Kt-QB3	Kt-B3
 4.	P-K3	P-K3
WHITE to Move or Undo or Jump or Clear
 
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