D50 is the opening Queen's Gambit Declined: Been-Koomen Variation of the volume D · Closed games: 8 half-moves to the position in the diagram, 6 variations in the ECO table.
What the games say
339 games in the collections, from 1887 to 2022. Mean rating of the games with ratings: 2430.
White wins 40 %, draws 36 %, Black wins 24 %
Most games: Prins, Lodewijk (8), Euwe, Max (7), Ivanov, Sergey (7), Stahlberg, Gideon (7), Wade, Robert Graham (7)
All 6 variations
- Queen's Gambit Declined: Been-Koomen Variation 1.d4 d5 2.c4 e6 3.♘c3 ♘f6 4.♗g5 c5
- Queen's Gambit Declined: Modern Variation 1.d4 d5 2.c4 e6 3.♘c3 ♘f6 4.♗g5
- Queen's Gambit Declined: Pseudo-Tarrasch Variation 1.d4 d5 2.c4 e6 3.♘c3 ♘f6 4.♗g5 c5 5.cxd5
- Queen's Gambit Declined: Pseudo-Tarrasch Variation, Canal Variation 1.d4 d5 2.c4 e6 3.♘c3 ♘f6 4.♗g5 c5 5.cxd5 ♕b6
- Queen's Gambit Declined: Pseudo-Tarrasch Variation, Primitive Pillsbury Variation 1.d4 d5 2.c4 e6 3.♘c3 ♘f6 4.♗g5 c5 5.♘f3 cxd4 6.♕xd4
- Queen's Gambit Declined: Semi-Tarrasch Defense, Krause Variation 1.d4 d5 2.c4 e6 3.♘c3 ♘f6 4.♗g5 c5 5.♘f3 cxd4 6.♘xd4 e5 7.♘db5 a6 8.♕a4