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Logic Lagoon

Picture sudoku and picture sums that build real logic.

Picture sudoku teaches step-by-step reasoning: if the sun is here, it cannot be there. Picture sums are early algebra: each picture stands for a number, and one clue unlocks the next.

Builds: Logic

Aya, the explorer of Logic Lagoon Lumi

Aya: If it can’t go there, it must go here!

Lumi: Look at one row at a time. My light will help.

All Logic Lagoon puzzles to play on screen or print, in five levels.

Open all Logic Lagoon puzzlesPrintable sets by age

Featured puzzles

Level 1 Starter Ages 4–5

Logic Lagoon First Pictures Sudoku Level 1 · StarterAges 4–55 min Logic Lagoon Sunny Squares Sudoku Level 1 · StarterAges 4–55 min Logic Lagoon Heart Garden Sudoku Level 1 · StarterAges 4–55 min Logic Lagoon Little Lagoon Sudoku Level 1 · StarterAges 4–55 min

Level 2 Easy Ages 4–7

Logic Lagoon Raindrop Rows Sudoku Level 2 · EasyAges 4–75 min Logic Lagoon Leafy Grid Sudoku Level 2 · EasyAges 4–75 min Logic Lagoon Lagoon Lights Sudoku Level 2 · EasyAges 4–75 min Logic Lagoon Splash Square Sudoku Level 2 · EasyAges 4–75 min

Level 3 Medium Ages 6–7

Logic Lagoon Moon and Stars Sudoku Level 3 · MediumAges 6–710 min Logic Lagoon Sky Puzzle Sudoku Level 3 · MediumAges 6–710 min Logic Lagoon Island Grid Sudoku Level 3 · MediumAges 6–710 min Logic Lagoon Coral Cove Sudoku Level 3 · MediumAges 6–710 min

Level 4 Tricky Ages 8–10

Logic Lagoon Tide Pool Sudoku Level 4 · TrickyAges 8–1015 min Logic Lagoon Night Lagoon Sudoku Level 4 · TrickyAges 8–1015 min Logic Lagoon Pearl Puzzle Sudoku Level 4 · TrickyAges 8–1015 min Logic Lagoon Wave Grid Sudoku Level 4 · TrickyAges 8–1015 min

Level 5 Expert Ages 8–10

Logic Lagoon Master Lagoon Sudoku Level 5 · ExpertAges 8–1020 min Logic Lagoon Starry Night Sudoku Level 5 · ExpertAges 8–1020 min Logic Lagoon Deep Blue Sudoku Level 5 · ExpertAges 8–1020 min Logic Lagoon Lagoon Legend Sudoku Level 5 · ExpertAges 8–1020 min

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  • Straight away: Brain Bites, 10 free printable puzzles for ages 4–10 (PDF)
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