Stock photography picture of sudoku puzzle

AJNBKY - Licenced Caption sudoku puzzle Keywords sudoku, su, doku, numbers, numeric, number, puzzle, game, logic, test, logical, grid, board, squares, box, intellect, intelligence, clever, challenge, brain, teaser, solve, solving, solution, solved, completed, complete, pencil, marks, close-up, closeup, close, up, macro, detail, magazine, page, paper