Queens Gambit Declined Tartakower Defense Under Promotion in Chess

In the Queens Gambit Declined Tartakower Defense, Black accepts the queenside tension and often plays ...c5 and ...Bd7 to challenge the center. The “Under Promotion” motif means that instead of promoting to a queen, Black (or White) promotes to a minor piece—typically a knight—to give a specific tactical effect. The defining feature is a promotion on the edge of the board where the promoted piece must control key squares immediately, not just maximize material.