411 REFERENCE · Wikibooks
Chess Opening Theory/1. d4/1...d6/2. c4/2...e5
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Rat Defence rd nd bd qd kd bd nd rd pd pd pd pd pd pd pd pd pl pl pl pl pl pl pl pl rl nl bl ql kl bl nl rl
Rat Defence
The Rat Defence is a solid option for black in the Old Indian. It mainly challenges white’s center and fights for development. White may take the pawn with 3. dxe5.
Black aims for a solid endgame position if 3.dxe5.