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1.d4 c6 2.e4 g6 3.Nc3 Bg7
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1.d4 c6 2.e4 g6 3.Nc3 Bg7 4.f4
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1.d4 c6 2.e4 g6 3.Nc3 Bg7 4.f4 Qb6
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1.d4 c6 2.e4 g6 3.Nc3 Bg7 4.f4 Qb6 5.e5
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1.d4 c6 2.e4 g6 3.Nc3 Bg7 4.f4 Qb6 5.e5 h5