Kenken: Lim-ops, No-ops And Twist!: 180 6 X 6 Puzzles That Make You Smarter

This book will challenge seasoned KenKen players, enhance their solving techniques, and provide hours of fun puzzle play and brain training.
NEW RULES ARE INTRODUCED ...
Limited-operations puzzles, where puzzles may contain only addition, only subtraction, or a mix of addition and subtraction.
No-operations puzzles, where puzzles will use all four operations including multiplication and division, but YOU have to figure out which operations to use.
... AND A BRAND NEW PUZZLE
Twist puzzles where instead of using 1 to 6 for a 6 x 6 puzzle as you do in regular KenKen, you'll use a different candidate set each time. In one puzzle, you might use {1, 2, 3, 7, 8, 9}; in another, you might use {2, 4, 6, 7, 8, 9}. Different combinations will present exciting new challenges.
No puzzle involves guesswork ... there is always a logical way in!
This collection of 6 x 6 puzzles is perfect for any experienced KenKen player ... from beginner to expert!
Hours of Fun, Challenges and ultimate Satisfaction!!
KenKen is an exciting, mind-expanding puzzle based on "The Art of Teaching without Teaching", an ingenious teaching philosophy developed by KenKen's creator and renowned educator, Tetsuya Miyamoto.