Even though I have played both sides of this opening in tournament play, it is not my normal opening on either side of the board. Consequently, my experience against the Breyer variation is quite limited. This morning, an online opponent deployed it against me in a three minute game. A few moves later, I seemed to lose the thread of the game and gave up a pawn.
Somehow, I got the material back and could have exchanged into a an equal double rook endgame. I kept the queens on the board, and lost. These annotations were made quickly--almost as fact as the game. No engine was used. I did use an opening book: PowerBase 2016 (it may be time to buy a more recent version).
Stripes,J (1952) -- Internet Opponent (2096) [C95]
Live Chess Chess.com, 23.01.2020
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.0-0 Be7 6.Re1 b5 7.Bb3 d6 8.c3 0-0 9.h3 Nb8
Black expends some tempi to bring the knight to a better square. This maneuver is the characteristic feature of the Breyer variation of the Spanish.
White to move
10.d4 Nbd7 11.Nbd2 Bb7 12.d5
12.Bc2 is the main line
12...c6
White to move
13.c4
13.dxc6 looks better Bxc6 14.Bc2
13...bxc4 14.Bxc4?
14.dxc6 looks better here, as well. The move I played dropped a pawn. 14...cxb3 15.cxb7 Rb8 16.Nxb3 (16.Qxb3? Nc5) 16...Rxb7 17.Bd2
14...cxd5 15.exd5 Nxd5 16.Nf1 N7b6 17.Bb3 Rc8
White to move
18.Be3
Perhaps 18.Bd2 with the idea of Ba5 would have been more sensible.
18...Nxe3 19.Nxe3 Kh8 20.Nf5 g6
White to move
21.Nh6
There were better options for this knight.
21.Nxd7, eliminating the bishop pair.
21.Ne3, attempting to use d5 as an outpost.
21...Kg7 22.Ng4 f5 23.Ne3 Bf6 24.Nd5 Nxd5 25.Bxd5 Bxd5 26.Qxd5 Rc5 27.Qd2 Qc7 28.Rad1 Rc8
28...d5 and it seems that Black's central pawns will win the day.
29.Qxd6 e4
White to move
30.Nh2??
30.Qxc7+ R8xc7 31.Nd4 Bxd4 32.Rxd4=
30...Bxb2 31.Qxa6 Rc2 32.Rf1 Be5 33.g3 Bxg3 34.fxg3 Qxg3+ 0-1
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