Barry Sandercock wrote:ChessBomb is the best website for playing the games through, also computer assessments and comments (!) Michael Adams game looks difficult (move 24) at the moment.
Presumably he either missed that 19. .. Qh5 was possible or assumed that 20. g4 was a reply. It appears that 20. g4 can be met by 20. .. Bxg4.
Earlier in the opening, the natural 12. Nbd2 wasn't possible as by comparison to a normal Worall style Spanish, Black had both already Breyered the Knight and got Qc7 in, making c5xd4 a good reply to Nbd2. Usually in a Worall White plays d5 in similar positions, but that's with a Knight cut off on a5.