Move away from the screen and tackle this intriguing 'number' puzzle of multiple skill levels, from "So easy" to "My brain hurts!" Ten puzzle pieces, shaped like the digital numbers 0 to 9, must be placed on the board in such a way that certain sums match a selected problem from the book. 120 challenges, and each one has only one solution (provided at the end of the challenge booklet). Portable, unique, and totally satisfying! For 1 player.
