In_Association_with_Amazon

ECO CODES

E49 Nimzo-Indian: 4.e3, Botvinnik system
1. d2d4 g8f6 2. c2c4 e7e6 3. b1c3 f8b4 4. e2e3 0-0 5. f1d3 d7d5
6. a2a3 b4c3 7. b2c3
















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