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D50
Queen's Gambit Declined: Been-Koomen Variation
Position
♜
♞
♝
♛
♚
♝
♜
♟
♟
♟
♟
♟
♟
♞
♟
♟
♝
♟
♟
♞
♟
♟
♟
♟
♟
♟
♜
♛
♚
♝
♞
♜
1.
d4
d5
2.
c4
e6
3.
Nc3
Nf6
4.
Bg5
c5
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