by Dj Ape (Author)
This is the first book by Djape with classic Sudoku puzzles.
There are 5 difficulty levels with 60 puzzles each. First 240 puzzles can be solved by using standard Sudoku solving methods: naked or hidden singles, pairs, triplets and quads, and row/column and box interactions.
The final level, the so called INSANE, contains puzzles which require you to use either the X-Wing or Swordfish techniques. How they're used is explained in the introduction.
There are no trivial puzzles in this book - even those in the COOL category can be tricky. So, sharpen your pencils and have fun!
Author Biography
DJAPE is the author of over 40 puzzle books, ranging from Sudoku variants such as Killer Sudoku, Samurai Sudoku and Jigsaw Sudoku to Hidoku, Tridoku, CalcuDoku and Picross/Hanjie/Griddlers/Nonograms puzzles. Also, Djape contributes regularly to newspapers and magazines across the globe, including The Washington Post.
Three Kindle active content game applications have been released with puzzles by Djape: Samurai Sudoku, Tridoku and Jigsaw Sudoku.
Djape is preparing other puzzle games for Kindle and Android platforms.
On a more personal note, Djape is currently working on his PhD thesis in Computer Science. Likes sailing, playing bridge and traveling.
Find out more about Djape's puzzles on www.djape.net