[ECO code D45]
The Stoltz Variation
White develops his Queen to QB2(c2), (always a mistake before Black has developed his QKt), avoiding the Meran (6.B-Q3..PxP). W-Alt.
White Black White Black 1. P-Q4 P-Q4 6. Q-B2 2. P-QB4 P-K3 3. Kt-QB3 Kt-KB3 4. Kt-B3 P-B3 5. P-K3 QKt-Q2
Example ends: Undo or Jump or Clear