The step system workbooks have excellent tactics in them. They initially start with a theme but then get into a mix. The reason why I like them so much is because many puzzled looked like they have multiple correct answers. It's in exploring why the other seemingly correct answers are actually wrong is what I feel sets them apart. It's really helped me defense in utilizing previously unknown resources.
Tactics Books
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I'm looking for 2-3 move puzzle books to train pattern recognition. Feel free to give other tactic recommendations.
Thanks, Jimmy