Chess Board
[ECO code B41] Move Move Here
SICILIAN DEF. - Sicilian Counter-Attack
The Koch Variation

White's K4(e4) Pawn under attack (via Black's pin) moves on to K5(e5) reversing Black's KKt attack.
Black's Knight now under attack moves across to Q4(d5), doubling the attack on White's QKt.
    White  Black	White  Black
 1. P-K4   P-QB4     6.	P-K5!  Kt-Q4
 2. Kt-KB3 P-K3
 3. P-Q4   PxP
 4. KtxP   Kt-KB3
 5. Kt-QB3 B-Kt5?!

WHITE to Move or Undo or Jump or Clear
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