Alexander Rodriguez

Futoshiki Puzzles - 400 Easy to Expert 7x7 vol. 10

Hidoku Puzzles - 200 Hard to Expert 9x9 vol. 3 (Hidoku Puzzles, #3)

Hidoku Puzzles - 200 Easy to Medium 9x9 vol. 2 (Hidoku Puzzles, #2)

Hidoku Puzzles - 400 Easy to Expert 11x11 vol. 6

Futoshiki Puzzles - 200 Hard to Expert 7x7 vol. 9 (Futoshiki Puzzles, #9)

Futoshiki Puzzles - 400 Hard to Expert 6x6 vol. 6 (Futoshiki Puzzles, #6)

Jigsaw Sudoku Puzzles - 200 Easy to Medium vol. 5

Jigsaw Sudoku Puzzles - 200 Hard to Expert vol. 6

Futoshiki Puzzles - 400 Easy to Medium 6x6 vol. 5

Binary Puzzles - 400 Easy to Expert 9x9 vol. 8

CalcuDoku Puzzles - 400 Easy to Expert 6x6 vol. 10 (Calcudoku Puzzles, #10)

CalcuDoku Puzzles - 400 Easy to Medium 6x6 vol. 11

CalcuDoku Puzzles - 200 Easy to Expert 6x6 vol. 13

CalcuDoku Puzzles - 400 Hard to Expert 6x6 vol. 12 (Calcudoku Puzzles, #12)

Killer Sudoku Puzzles - 200 Hard to Expert 6x6 vol. 14

Binary Puzzles - 200 Easy to Expert 9x9 vol. 5

Killer Sudoku Puzzles - 200 Easy to Medium 6x6 vol. 13

Binary Puzzles - 200 Hard to Expert 9x9 vol. 7

Killer Sudoku Puzzles - 200 Easy to Expert 6x6 vol. 12 (Killer Sudoku Puzzles, #12)

Binary Puzzles - 200 Easy to Medium 9x9 vol. 6 (Binary Puzzles, #6)

Kakuro Puzzles 10x10 - 200 vol. 2 (Kakuro Puzzles, #2)

Kakuro Puzzles 9x9 - 200 vol. 1 (Kakuro Puzzles, #1)

Greater Than Sudoku Puzzles - Easy to Expert 400 vol. 5 (Greater Than Sudoku, #5)

Killer Sudoku 9x9 Puzzles - Hard to Expert 200 vol. 11