Will Shortz Presents Wild KenKen: 200 Medium-Level Logic Puzzles That Make You Smarter
Once you've mastered the easy puzzles, it's time to take it up a notch!Features: -200 medium-level puzzles using addition, sumtraction, multiplication, and division-Introduction and instructions by Will Shortz-Puzzles range from 4-by-4 to 6-by-6 More »