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Puzzle Games

Animal Sudoku

A picture sudoku online, free: animals in place of numbers, and every row, column and box needs each of them once. Easy is a 4x4 sudoku you can read at a glance, medium and hard are a 9x9 of nine animals, and each press of a level brings a new board, with notes and a hint for the moment you are stuck.

Animal Sudoku game

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Every row, column and box needs each animal once. Pick an empty cell, then an animal.

How to play animal sudoku

  1. Tap an empty square. Its row, its column and its box light up around it.
  2. Check which animals already live in those three. The animal they all lack belongs in your square.
  3. Choose it from the animals under the board. If it does not belong there, the square turns red.
  4. Keep going until every row, column and box has each animal exactly once.

Easy, medium and hard

  • Easy4 × 4 with four animals, one of each colour, and 6 already in place: a first sudoku for anyone
  • Medium9 × 9 with nine animals and about 38 in place: the cat, the owl and the rest work like the digits 1 to 9
  • Hard9 × 9 with about 31 in place: fewer animals to start from, and still never a guess

With a keyboard: arrows to move, 1 to 9 for the animals in the order they sit under the board, Backspace to clear a square, N for notes.

How to solve animal sudoku

Who is missing here

Pick a square and name the animals around it: the lion in its row, the frog in its column, the pig in its box. When only one animal is not around, that one moves in.

Where can the cat go

Follow one animal, the cat for example, through a single box. Cross out every square where a cat already sees it along a row or column. One square left means the cat lives there.

Lost? The Hint button picks the next square to fill and tells you which animal goes there, and why.

The animals

Twenty-four animals, drawn for this game: pets and farm animals, a lion and a giraffe, a panda and a koala, and a few from the sea. The board never mixes two that look alike when small, like the cat and the fox, or the panda and the koala, and each animal keeps its own outline as well as its colour.

Questions

What is animal sudoku?

A sudoku where every number is an animal. Each row, column and box has every animal once: four on the 4 × 4 with its 2 × 2 boxes, nine on the 9 × 9 with its 3 × 3 boxes.

Do I need to know sudoku to play?

No. The only rule is that no animal repeats in a row, a column or a box, and the 4 × 4 teaches it in a minute. Medium and hard follow the same rule on a full 9 × 9, exactly like a number sudoku.

What is a 4x4 sudoku?

A sudoku where every number is an animal. Each row, column and box has every animal once: four on the 4 × 4 with its 2 × 2 boxes, nine on the 9 × 9 with its 3 × 3 boxes.

Can a puzzle have two answers?

No. The board is made the moment you choose a level, and the game keeps it only if the animals fit in exactly one way.

What if I get stuck?

Press Hint. It lights the next square and explains which animal goes there. If one of your animals is in the wrong square, it shows you that first.

Can children play it?

Yes. Small children can play the 4 × 4 before they know their numbers, since a lion is a lion; the big buttons under the board are made for a finger.

Are there more picture sudokus?

Yes, eighteen more with the same board and rules. If you like animals, try Bird Sudoku, Bug Sudoku or Ocean Sudoku next; every set keeps its own best times.

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