Mini Sudoku No. 1

This is the exact grid printed on the shirt you scanned. Fill every row, column, and 2×3 box with the digits 1–6. Tap a square, then tap a number. For added fun, have someone else scan, solve, and see who is faster. No cheating!

0:00The clock starts with your first move.

How to solve it

The goal
Fill all 36 squares so that every row, every column, and every 2×3 box holds the digits 1–6 — once each, no repeats anywhere.
The grid
Six rows and six columns, split by the heavier lines into six boxes of six squares.16 numbers are printed for you and can't be changed; the other 20 squares are yours to fill.
Making a move
Tap an empty square so it highlights, then tap a number below the grid. Tap a different number to change your mind, or Erase to clear the square.
Mistakes
Any digit that repeats in its row, column, or box turns red. That catches repeats, not every wrong guess — a digit in the wrong square can look legal until it blocks the rest. Switch Mistakes to hidden if you'd rather check your own work.
The clock
It starts on your first move and stops the moment the grid is correct. Racing a friend? Each phone keeps its own time.
Stuck
Give up — show solution prints the finished grid and stops the clock, so no time is recorded. Start over returns the starting grid and resets the clock.
A way in
Work the row, column, or box that already holds the most numbers. The digit missing there has fewer and fewer places it can go.

Solve another puzzle · Want this grid on a shirt? Visit the shop.