Tree path 10 levels King's Pawn Game › King's Knight Opening › Petrov's Defense › Petrov's Defense › Petrov's Defense › Petrov's Defense › Petrov's Defense › Classical Attack › Mason-Showalter Variation › Petrov's Defense: Classical Attack, Krause Variation
C42

Petrov's Defense: Classical Attack, Krause Variation

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Overview

Petrov's Defense: Classical Attack, Krause Variation is a specific line in the Open Games family (ECO C42), arising from a recognised theoretical position.

The Open Games group covers open games — classical 1.e4 e5 openings where both sides contest the centre directly with pawns.

The line arises from 19 plies — specifically the moves 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. O-O Be7 8. Re1 Bg4 9. c3 f5 10. c4.

The line refines Petrov's Defense: Classical Attack, Mason-Showalter Variation, which traces back to the root opening King's Pawn Game.

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ECO code
C42
Group
Open Games (C)
Plies
19
Parent
Petrov's Defense: Classical Attack, Mason-Showalter Variation

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