Sudoku

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Check the words

Tap a word you think is wrong and say why. Whoever wrote it can answer, and the host makes the final call.

How to play

A board of 9 × 9 squares in nine boxes of 3 × 3. Some numbers are given; fill in the rest.
Every row, every column and every box must have each number from 1 to 9 exactly once.
Tap a square, then a number. A right number stays; a wrong one turns red, counts as a mistake and is cleared.
The mistakes allowed depend on the level: Easy 3, Medium 3, Hard 4, Expert 4; reach them and the game is lost. The time depends on the level too: when it runs out, the game is lost.
Notes: small pencil numbers for what might go in a square. Undo and the eraser work on your notes.
One hint in every game: it shows the next number that can be found.
Each level has its own stake and win: Easy, Medium, Hard and Expert. A win pays its chips; a loss costs the stake.
Leaving is free only in the first 30 seconds, before you place 3 numbers; after that, leaving costs the stake and 50 chips.
Wins pay up to 500 chips a day (losses do not count); after that you can go on playing for free.

Daily win limit: the games pay up to 1500 chips of wins a day, all of them together. The win that reaches it is paid in full; after it you can go on playing as usual for fun, and the chips come back the next day.

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Sudoku

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Final standings

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How to play

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