[ECO code C21]
CENTRE GAME to BISHOP'S OPG. (Urusov G.)
White further transposes into a Bishop's Opening line by developing his King's Bishop to QB4(c4), deliberately leaving his KP unprotected as a gambit. If 4..KtxP White has a compensating 5.QxP attack.
White Black Transp.White Black 1. P-K4 P-K4 (1.) 2. P-Q4 PxP (2. B-B4 Kt-KB3) 3. Kt-KB3 Kt-KB3 (3. P-Q4 PxP ) 4. B-QB4 (4. Kt-KB3 )
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