KENKEN NO-OPERATIONS: DEVIOUSLY DIFFICULT PUZZLES FOR THE ULTIMATE SOLVER! For the ultimate KenKen challenge-seeker looking for a totally new twist, test yourself with the FIRST-EVER book composed entirely of our all-new NO-OP puzzles! In this ultra-devious collection, the operations are not provided; you need to solve for these as you go! This book contains 100 tantalizing 7x7, 8x8, and mostly 9x9 No-Op puzzles, curated by our experienced team of “Kenerators” to intrigue you, challenge you, and keep you entertained for hours. But be warned: these puzzles are not for the faint-hearted, and they're certain to challenge even the most expert of experts. Good luck!

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