Quantum 2-in-1 is a two-sided logic puzzle from Smart Games for ages 10 to adult. One side of the board challenges you to place pieces so the colours match, while the other has you arrange pieces so the dots add up to the numbers shown. You can also build your own puzzles, each of which is guaranteed to have a solution. The set includes a game board, nine double-sided challenge tiles, 16 double-sided puzzle pieces and a booklet with 60 challenges and solutions. It is a screen-free workout for concentration, logic, planning, problem solving and spatial insight.