rnbqkb1r/ppp1pppp/1n1P4/8/2PP4/8/PP3PPP/RNBQKBNR b KQkq - 0 5 ; B03 Alekhine Defense: Exchange Variation
r2q1rk1/pp2ppbp/1nnp2p1/5b2/2PP1B2/2N2N1P/PP2BPP1/R2Q1RK1 b - - 8 11 ; B03 Alekhine Defense: Exchange Variation, Karpov Variation
rnbq1rk1/pp2ppbp/1n1p2p1/8/2PP4/1PN1B3/P4PPP/2RQKBNR b K - 0 9 ; B03 Alekhine Defense: Exchange Variation, Voronezh Variation