
I love this puzzle! I bought it for my 14 year old son. He loves logic grid puzzles and is great at math. The first puzzles were pretty easy and I was afraid it wouldn't stress him enough. Then he got stuck on riddle number 8, and it got harder and harder from there. I love finding games that develop critical thinking skills. Plus, there's storage space in the compartment so those cards aren't scattered around the house. Great game and looking forward to the boosters.

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