Sudoku puzzle with difficult level and blank spaces for solving
Schlüsselwörter
sudoku,
puzzle,
difficulty,
game,
brain,
logic,
challenge,
number,
grid,
problem,
strategy,
concentration,
entertainment,
exercise,
intellect,
solution,
mental,
fun,
play,
leisure,
activity,
recreational,
analytic,
brain teaser,
competition,
finished,
solving,
mat,
education,
mathematic,
creativity,
engaged,
sharpened,
critical,
thinking,
score,
2,
image,
hard,
table,
board,
object,
tool,
work,
white,
colours
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