96MB, Fritz7.ctg, C86838-D
is good for White.]
5...Bb7 6.a3 may not be worth the time to use a move here to stop the pin of the N on c3.
6...Be7 7.Bd3 f5 8.exf6 If White does not capture en passant, Black may have gt5 and h5 pawn roller.
8...Bxf6 keeps N out of e5 and pressures d4.
9.Ne2 Qd7 10.c3 overly cautious.
10...0-0-0 11.Qa4 looks agressive but does not help White.
11...Na5 12.Qxd7+ [12.Qc2 is now best for White.]
12...Rxd7 doubling Rooks on a file will be easier now.
13.Nd2 Nh6 14.b4 Nc6 15.Nf3 Nf7! and White cannot stop e5.
16.Bf4 Re7 17.Kd2 e5 18.dxe5 forced.
18...Ncxe5 19.Bf5+ Kb8 20.Ned4 g6 21.Bc2 Nc4+ 22.Kd3 a6? Black should play g6-g5-g4.
23.Bb3 Nfe5+ 24.Nxe5 Nxe5+ 25.Bxe5 Rxe5 26.Rae1 Rhe8 could have played c5 here or on move 29 or 30.
27.Rxe5 Rxe5 28.Nf3 Re7 29.Rd1 [29.Re1 may hold on for White.]
29...c6 30.Nd4 Kc7 31.f4 Bc8 32.c4? White is lost after this move.
32...dxc4+ 33.Bxc4 Bxd4 0-1