Semi-Tarrasch Defense
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| Moves | 1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 | ||||||||||||||||||||||||||||||||||||||||||||
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| ECO | D40–D42 | ||||||||||||||||||||||||||||||||||||||||||||
| Named after | Siegbert Tarrasch | ||||||||||||||||||||||||||||||||||||||||||||
| Parent | Queen's Gambit Declined | ||||||||||||||||||||||||||||||||||||||||||||
The Semi-Tarrasch Defense is a chess opening characterized by the following moves:
The Semi-Tarrasch is a variation of the Queen's Gambit Declined. Unlike the regular Tarrasch Defense (3...c5), in the Semi-Tarrasch, Black does not need to accept an isolated pawn, since 5...Nxd5 can be played after the usual 5.cxd5. On the other hand, Black cedes a spatial advantage to White.
In the Encyclopedia of Chess Openings, the Semi-Tarrasch Defense has codes D40 through D42.