Attempting a Sudoku puzzle.

---

Size: 4256px × 2832px
Photo credit: © Trevor Chriss / Alamy / Afripics
License: Royalty Free
Model Released: Yes

Keywords: addictive, analylze, analyze, calculate, challenge, clever, decipher, decode, deduce, difficult, education, enigma, games, grid, hobby, incomplete, intellect, intellectual, intelligence, intelligent, leisure, lifestyle, logic, math, mathematics, maths, newspaper, number, numbers, numeric, paper, pastime, patience, pen, play, problem, puzzle, resolve, soduko, solution, solve, square, squares, sudoko, sudoku, working