2000 Ultimate Extreme Sudoku
2,000 Extreme Sudoku. Nothing easier.
2000 Ultimate Extreme Sudoku is the ultimate test for expert solvers. All 2,000 puzzles are rated Extreme, and every one needs advanced techniques, from the first page to the last. There's nothing easier in the book.
If you can already finish hard Sudoku without help, this is where you find out how far your skills go. Expect to work with full candidate lists and to need patterns such as X-Wings, Swordfish and chains. Our guide to solving Sudoku covers these techniques with worked examples if you'd like a refresher.
To fit 2,000 puzzles in, the grids are compact, with 12 per page, and all 2,000 solutions are printed in the back. The book is printed at 8.5 x 11 inches.
With this many extreme puzzles, a single book lasts a very long time. If you'd like to build up first, try the Hard to Extreme edition of 2000 Sudoku or Hard Core Sudoku 500+, then come back for the full challenge.
The book