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Nice mate with the knight; you had mate in 1 at move 25, though, with the rooks. Also, in your annotation for move 21, you said that black couldn't afford to waste moves playing offensively. It is my belief that black needs to find counterplay rather than just playing defensively. Of course, as you mentioned, his pieces are in horrible position to do so, so he really may not have any options here.
PS. thanks for the games tonight.
My two cents. (See commentary, beginning at move 9.)
6. ... Bg4? is the beginning of his mistake.