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c4
reply
1.d4 d5 2.c4reply
e6
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1.d4 d5 2.c4 e6 reply
Nc3
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1.d4 d5 2.c4 e6 3.Nc3reply
b6
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1.d4 d5 2.c4 e6 3.Nc3 b6 pull down to refresh
1.d4 d5 2.c41.d4 d5 2.c4 e6 1.d4 d5 2.c4 e6 3.Nc31.d4 d5 2.c4 e6 3.Nc3 b6 
1.d4 d5