My 1000th game to finish. Abrahams-Noteboom Variation.
1. d4 d5 2. c4 e6 3. Nb1c3 c6 4. Ng1f3 dxc4
This brings the Abrahams - Noteboom variation. Black threatens to hold the c4 pawn with b5.
5. a4
Attacks b5.
5... Bf8b4
Neutralizes the knight renewing the threat of b5.
6. e4
I believe the books regard this as risky as in the main line the e pawn hangs to a bishop on b7.
6... b5 7. axb5 cxb5 8. Bc1d2
White unpins the knight threatening to take on b5. Black cannot play a6 because Nxb5 axb5 allows Rxa8.
8... Bb4xc3 9. Bd2xc3 a5
Looking at going back to the main book line if white plays b3, but this must be risky in view of Black's lack of development.
10. Qd1d2
This position is outside my previous experience with this opening. The pawn can be saved with a4 but I really didn't like that structure. I thought it was time to return the extra pawn and develop some pieces.
10... Bc8b7 11. Bc3xa5 Qd8e7
I think the queen has to stay on this diagonal otherwise White can play Qg5 hitting both b5 and g7.
12. Ra1b1
A slight surprise as I thought he would play Be2 and 0-0 which also unpins the bishop.
12... Nb8c6
I was worried about Bb4 interfering on a3-f8 to stop castling or to win an exchange after I castled.