Authors: P. PROOF

  • Sumdoku Puzzles 300 Sum-Doku (Also Know As Killer Sudoku) Puzzles. 100 Easy, 100 Medium And 100 Hard. Solutions At The Back Of The Book. — P. PROOF

    Sumdoku Puzzles 300 Sum-Doku (Also Know As Killer Sudoku) Puzzles. 100 Easy, 100 Medium And 100 Hard. Solutions At The Back Of The Book. — P. PROOF