5.Bg5
| a | b | c | d | e | f | g | h | ||
| 8 | 8 | ||||||||
| 7 | 7 | ||||||||
| 6 | 6 | ||||||||
| 5 | 5 | ||||||||
| 4 | 4 | ||||||||
| 3 | 3 | ||||||||
| 2 | 2 | ||||||||
| 1 | 1 | ||||||||
| a | b | c | d | e | f | g | h |
The Anti-Meran Gambit (ECO code D44) arises after 5.Bg5. Possible replies include ...h6, ...Nbd7, ...dxc4, and ...Be7. White refuses to shut in the dark-squared bishop, instead developing it to an active square where it pins the black knight. It is now possible for Black to transpose to either the Cambridge Springs Defence with 5...Nbd7 6.e3 Qa5, or enter the Orthodox Defense with 6...Be7.
Read more about this topic: Semi-Slav Defense