Chess Board
[ECO code C57]
TWO KNIGHTS TRANSPOSITION
ULVESTADT Var. to FRITZ Var.
Black's QB3(c6) Kt under P attack moved to Q5(d4).
White pushes his QBPawn out to QB3(c3) (despite it blocking his QKt) to attack Black's central knight.
    White  Black    Transp.White Black
 1. P-K4   P-K4		  (1.)	    
 2. Kt-KB3 Kt-QB3   	  (2.)
 3. B-B4   Kt-B3	  (3.)
 4. Kt-Kt5 P-Q4!	  (4.)
 5. PxP	   P-Kt4    (5.	PxP    Kt-Q5)
 6. B-B1   Kt-Q5    (6.	P-QB3  P-Kt4)
 7. P-QB3	    (7.	B-B1	    )
Continue: Transpose or Undo or Jump or Clear