Alexander Rodriguez

Puzzles for Brain - Hitori 200 Puzzles 9x9 vol. 1

Puzzles for Brain Suguru - 200 Hard to Expert 10x10 vol. 6

Puzzles for Brain Suguru - 400 Easy to Expert 9x9 vol. 8

Puzzles for Brain - Hitori 200 Puzzles 14x14 vol. 4 (Hitori, #4)

Puzzles for Brain - Hitori 200 Puzzles 10x10 vol. 2 (Hitori, #2)

Puzzles for Brain Suguru - 400 Easy to Expert 10x10 vol. 7 (Suguru, #7)

Puzzles for Brain - Binary 200 Medium to Hard 11x11 vol. 14 (Binary, #14)

Sudoku Puzzles Mix- 400 Hard;Sudoku X, Killer Sudoku, Jigsaw Sudoku, Kropki Sudoku (Sudoku Puzzles, #2)

Sudoku Puzzles Mix- 400 Easy;Sudoku X, Killer Sudoku, Jigsaw Sudoku, Kropki Sudoku (Sudoku Puzzles, #1)

Puzzles for Brain - Binary 400 Easy to Expert 11x11 vol. 18

Puzzles for Brain - Binary 200 Easy to Medium 11x11 vol. 13

Puzzles for Brain - Binary 200 Hard to Expert 11x11 vol. 15

Puzzles for Brain - Binary 400 Easy to Medium 11x11 vol. 16 (Binary, #16)

Puzzles for Brain - Binary 400 Hard to Expert 11x11 vol. 17 (Binary, #17)

Puzzles for Brain CalcuDoku - 200 Medium 8x8 vol. 19

Puzzles for Brain CalcuDoku - 200 Hard to Expert 8x8 vol. 23 (Calcudoku, #23)

Puzzles for Brain CalcuDoku - 200 Easy 8x8 vol. 18 (Calcudoku, #18)

Puzzles for Brain CalcuDoku - 200 Hard 8x8 vol. 20 (Calcudoku, #20)

Puzzles for Brain CalcuDoku - 200 Expert 8x8 vol. 21

Puzzles for Brain CalcuDoku - 200 Easy to Medium 8x8 vol. 22 (Calcudoku, #22)

Samurai Sudoku - Hard 200 vol. 3

Samurai Sudoku - Medium 200 vol. 2 (Samurai Sudoku, #2)

Samurai Sudoku - Easy 200 vol. 1 (Samurai Sudoku, #1)

Jigsaw Sudoku Puzzles - 200 Easy to Medium vol. 7 (Jigsaw Sudoku, #7)