Sicilian Bb5(+)
1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.Bxd7+ Qxd7 5.0-0 g6
This has been played by many grandmasters, but more popular in ChessBase's 2026 Mega database are 5...Nf6 and especially 5...Nc6.
6.c3 Bg7 7.d4 Nf6!?
Stockfish18 and Dragon1 prefer this over the 'automatic' Sicilian capture ...cxd4.
8.Qe2
The engines reckon Black equalises after 8.e5 dxe5 9.Nxe5 Qd5, and after 8.e5 dxe5 9.Nxe5 Nd5. However, as well as the text, they like 8.Re1.
8...cxd4 9.cxd4 0-0
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White's space advantage gives a slight edge, according to the engines.
10.Nc3 e6 11.Rd1 a6!?
The engines reckon this apparent-novelty is an improvement over one known move, 11...d5?!, but not as good as the also-known 11...Nc6. One point about the latter is that 12.d5 (11.d5 would have been a good answer to 10...Nc6) can be met by 12...exd5 13.exd5 Ne7. The problem with 11...d5?!, according to the engines, is that 12.e5 is strong, although all three games that saw the move in Mega26 ended in draws, and Black was slightly the weaker player in at least two of them.
12.h3!? Re8 13.e5!?
The engines suggest 13.Bg5 or 13.Bf4.
Nd5 14.Ne4 dxe5 15.dxe5 Qc7 16.Nd6 Rf8
16...Rd8?! 17.Ng5.
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17.Bg5?!
The engines suggest 17.b3!? Nc6 (17...Nc3 18.Qc2) 18.Bb2, claiming a slight edge for White, or 17.Be3!?, when they reckon 17...Nxe3 18.Qxe3 may also give White a slight edge, but they are less sure.
17...Nd7?
Black is at least equal after 17...Nc6 18.Rac1 Qb8 19.Nc4 h6, according to the engines.
18.Rac1 Qb8
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19.Rxd5!
A temporary exchange sacrifice that gives White a clear edge.
19...exd5 20.Be7
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20...b5?
Best, according to the engines, is 20...Re8 21.Nxe8 Qxe8 22.Bd6, although they give White the upper hand.
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21.Bxf8?
Black has no answer to 21.e6!
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21...Nxf8??
Also bad are 21...Bxf8?? 22.Rc8 Qa7 23.e6, and 21...Kxf8?? 22.Rc8, but 21...Qxf8 gives complete equality, according to the engines, although White has to find 22.Rc6 to avoid being at least a little worse (if, as in the game, 22.Ng5??, then 22...Nxe5).
22.Ng5 Ra7 23.Rc8!
The engines reckon this is significantly better than immediately capturing on f7.
23...Qb6 24.Ngxf7
Possibly even stronger is 24.Qf3!?
24...Rxf7 25.Nxf7 Qe6
Not much better is 25...Kxf7 26.Qf3+ Ke7 (26...Kg8 27.Qxd5+ Kh8 28.e6) 27.Qxd5 Qe6 28.Rc7+ Nd7 29.Qxe6+ Kxe6 30.f4, when the engines calculate White's advantage as the equivalent of being roughly a rook up.
26.Rc7 Nd7 27.Ng5 Qxe5 28.Qxe5 1-0
26.Rc7 Nd7 27.Ng5 Qxe5 28.Qxe5 1-0
The exchange-down ending is hopeless for Black.