Chess Board
[ECO code C42] Move Move Here
PETROFF'S DEFENCE
Ruy Lopez Variation
White's Knight under attack on K5(e5) retreats to its initial developed position, losing a tempo.
Black's K-side Knight takes White's KP and recoups, planning 6..Kt-QB6+disc.ch, 7..KtxQ or 6..Kt-KB3+disc.ch.
    White  Black	White  Black
 1. P-K4   P-K4	     5.	Kt-KB3 KtxP
 2. Kt-KB3 Kt-KB3    6.	B-K2   Q-Q2
 3. KtxP   Q-K2
 4. P-Q4   P-Q3    Alt. 3B-5B route
WHITE to Move or Undo or Jump or Clear
 
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