Rectangular Maze - Book 10

Rectangular Maze - Book 5

Rectangular Maze - Book 2

Rectangular Maze - Book 3

Circular Maze - Book 3

Circular Maze - Book 5

Circular (triangular lattice) Maze - Book 1

200 Sudoku Puzzles (with solutions) - Book 2

200 Sudoku Puzzles (with solutions) - Book 3

Circular (triangular lattice) maze - Book 2

200 Sudoku Puzzles (with solutions) - Book 4

200 Sudoku Puzzles (with solutions) - Book 5

Rectangular Maze - Book 7

Circular (triangular - lattice ) maze - Book 3

Circular (triangular - lattice) maze - Book 4

Rectangular Maze - Book 8

Circular (triangular - lattice) maze - Book 5

200 Sudoku Puzzles (with solutions) - Book 1

100 Rectangular Mazes (with solutions) - Book 7

Rectangular Maze - Book 6