Times Ultimate Killer Su Doku Book 14: 200 of the Deadliest Su Doku Puzzles

I've bought a few of these "Ultimate Killer Sudoku" volumes. There are 200 puzzles, grouped in increasing difficulty. The first 100 or so are relatively simple, perhaps too simple for an "ultimate" book. The second 100 are "Extra Deadly" and present more of a challenge. I'd like to see a "Super Ultimate Killer" version with some really difficult puzzles. Having said that, this series is the best I've found, it could just be better.

Love Times Ultimate Killer Sudoku but holidaying in hot countries seems to make the pages fall out. Very annoying on the sun bed!

Another excellent book. Well laid out. Clear print. Easy to follow instructions. Great value for money.

Keeps partner occupied.

Keeps my husband entertained for ages!