Alexander Rodriguez

Puzzles for Brain - Killer Sudoku Book 200 Easy to Medium Puzzles 10x10 (volume 1) (Killer Sudoku Book, #1)

Puzzles for Brain - Killer Sudoku Book 200 Easy to Expert Puzzles 10x10 (volume 4) (Killer Sudoku Book, #4)

Puzzles for Brain - Jigsaw Sudoku 200 Easy to Medium Puzzles 9x9 (volume 20) (Jigsaw Sudoku, #20)

Puzzles for Brain - CalcuDoku 200 Easy to Expert Puzzles 7x7 (volume 33) (Calcudoku, #33)

Puzzles for Brain - Jigsaw Sudoku 200 Easy to Expert Puzzles 10x10 (volume 24) (Jigsaw Sudoku, #24)

Puzzles for Brain - Jigsaw Sudoku 200 Easy to Expert Puzzles 9x9 (volume 23) (Jigsaw Sudoku, #23)

Puzzles for Brain - Jigsaw Sudoku 200 Easy to Expert Puzzles 12x12 (volume 25) (Jigsaw Sudoku, #25)

Puzzles for Brain - Jigsaw Sudoku 200 Hard to Expert Puzzles 9x9 (volume 22) (Jigsaw Sudoku, #22)

Puzzles for Brain - CalcuDoku 200 Easy to Expert Puzzles 6x6 (volume 32) (Calcudoku, #32)

Puzzles for Brain - Jigsaw Sudoku 200 Medium to Hard Puzzles 9x9 (volume 21) (Jigsaw Sudoku, #21)

Puzzles for Brain - Jigsaw Samurai Sudoku 200 Easy to Expert Puzzles vol.3 (Jigsaw Samurai Sudoku, #3)

Puzzles for Brain - CalcuDoku 200 Easy to Expert Puzzles 8x8 (volume 34) (Calcudoku, #34)

Puzzles for Brain - CalcuDoku 200 Easy to Expert Puzzles 9x9 vol.31

Puzzles for Brain - Jigsaw Sudoku 200 Easy to Expert Puzzles 9x9 vol.19

Puzzles for Brain - Straights 200 Easy to Expert Puzzles 9x9 vol.27

Puzzles for Brain - Binary 200 Easy to Expert Puzzles 10x10 vol.33 (Binary, #33)

Puzzles for Brain - Futoshiki 200 Easy to Medium Puzzles 9x9 vol.29 (Futoshiki, #29)

Puzzles for Brain - Futoshiki 200 Hard to Expert Puzzles 9x9 vol.30 (Futoshiki, #30)

Puzzles for Brain - Futoshiki 200 Easy to Medium Puzzles 8x8 vol.27 (Futoshiki, #27)

Puzzles for Brain - Futoshiki 200 Hard to Expert Puzzles 7x7 vol.26 (Futoshiki, #26)

Puzzles for Brain - Futoshiki 200 Hard to Expert Puzzles 8x8 vol.28 (Futoshiki, #28)

Puzzles for Brain - Futoshiki 200 Easy to Medium Puzzles 7x7 vol.25 (Futoshiki, #25)

Puzzles for Brain - Outside Sudoku 200 Expert Puzzles vol.14 (Outside Sudoku, #14)

Puzzles for Brain - Outside Sudoku 200 Medium Puzzles vol.12 (Outside Sudoku, #12)