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Koenig Player index

GM Yermolinsky - What it takes to be a complete 1.d4 player - QGD - Vd11
Yermolinsky, Glienke, Koenig
D63 QGD; Orthodox Defence - 7.Rc1
Sharpen your chess-sense with IM Watson! - Repertoire for Black - The English Defense #7
Hertneck, King, Kosten, Bauer, Kleff, Koenig
A10 English Defense