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A04
Colle System: Rhamphorhynchus Variation
Position
♜
♞
♝
♚
♞
♜
♟
♟
♟
♟
♟
♝
♟
♟
♛
♟
♟
♞
♟
♟
♟
♟
♟
♟
♜
♞
♝
♛
♚
♝
♜
1.
Nf3
c5
2.
e3
g6
3.
d4
Bg7
4.
dxc5
Qa5
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