Kappa Sudoku Digest/Pocket: 8 x 5 inches | 2 Volumes (May Vary from image) |
Sudoku puzzles are fun and engaging while providing your brain with a bit of stimulation! This puzzle book is ideal for people on the go and will provide hours of entertainment. |
Strain your brain include long-term memory, working memory, executive functioning, attention to detail, multitasking, and processing speed. |