The first 1000000 (one million) digits of pi.

This book contains 75 very difficult sudoku “number place” puzzles. In case you get stuck, the book also provides you a... More > hint to each puzzle.

Ideal for vacations and holidays, commuter train and long flights. < Less

The next 5000000 digits of pi: Digits 1000001 through 6000000, continuing from volume II.

Gattai-5 Sudoku (also called Samurai Sudoku) is an exciting and challenging puzzle, evolving from the popular Sudoku (number... More > place) puzzle. The puzzle consists of five Sudoku-grids: One in the centre and the other 4 overlapping each corner grid of the central one. Your numbers must be placed correctly for all the five puzzle squares. < Less

The next 5000000 digits of pi: Digits 1000001 through 6000000, continuing from volume II.

The first 1000000 (one million) digits of pi.

Gattai-5 Sudoku (also called Samurai Sudoku) is an exciting and challenging puzzle, evolving from the popular Sudoku (number... More > place) puzzle. The puzzle consists of five Sudoku-grids: One in the centre and the other 4 overlapping each corner grid of the central one. Your numbers must be placed correctly for all the five puzzle squares. < Less

This book contains 75 very difficult sudoku “number place” puzzles. In case you get stuck, the book also provides you a... More > hint to each puzzle.

Ideal for vacations and holidays, commuter train and long flights. < Less