Good puzzle! I was first thinking 1. Bxb1 1...Rxb1 2. Rxa3, to come out ahead by a minor piece. But after a couple of wrong tries, I found the checkmate :)
Puzzle 3
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well, it´s just a double attack, not checkmate, and a queen is of course much more worth than a knight
really nice thanks for the post!
easy!
It´s tuesday, so here´s another puzzle!