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8x8 Hidoku Puzzles

With 64 cells, the 8x8 Hidoku has the longest path of the series. The chain can loop through every region of the grid before reaching its end, so it rewards careful bookkeeping of which cells are still free.

Easy grids print 32 numbers, one cell in two; the Medium ones 27; Hard grids about 23, keeping only what a unique solution requires. Each page holds one large grid.

Part of the Hidoku Puzzles collection, Last updated on Thu, 29 Oct 2026 23:45:07 GMT.

Free Printables

Easy 8x8 Hidoku Puzzle (N1)

Easy 8x8 Hidoku alone on its page: 32 numbers given out of 64. Variant 1.
Easy 8x8 Hidoku alone on its page: 32 numbers given out of 64. Variant 1. | zuzuzi.com

Easy 8x8 Hidoku Puzzle (N2)

Easy 8x8 Hidoku alone on its page: 32 numbers given out of 64. Variant 2.
Easy 8x8 Hidoku alone on its page: 32 numbers given out of 64. Variant 2. | zuzuzi.com

Easy 8x8 Hidoku Puzzle (N3)

Easy 8x8 Hidoku alone on its page: 32 numbers given out of 64. Variant 3.
Easy 8x8 Hidoku alone on its page: 32 numbers given out of 64. Variant 3. | zuzuzi.com

Easy 8x8 Hidoku Puzzle (N4)

Easy 8x8 Hidoku alone on its page: 32 numbers given out of 64. Variant 4.
Easy 8x8 Hidoku alone on its page: 32 numbers given out of 64. Variant 4. | zuzuzi.com

Easy 8x8 Hidoku Puzzle (N5)

Easy 8x8 Hidoku alone on its page: 32 numbers given out of 64. Variant 5.
Easy 8x8 Hidoku alone on its page: 32 numbers given out of 64. Variant 5. | zuzuzi.com

Easy 8x8 Hidoku Puzzle (N6)

Easy 8x8 Hidoku alone on its page: 32 numbers given out of 64. Variant 6.
Easy 8x8 Hidoku alone on its page: 32 numbers given out of 64. Variant 6. | zuzuzi.com

Easy 8x8 Hidoku Puzzle (N7)

Easy 8x8 Hidoku alone on its page: 32 numbers given out of 64. Variant 7.
Easy 8x8 Hidoku alone on its page: 32 numbers given out of 64. Variant 7. | zuzuzi.com

Easy 8x8 Hidoku Puzzle (N8)

Easy 8x8 Hidoku alone on its page: 32 numbers given out of 64. Variant 8.
Easy 8x8 Hidoku alone on its page: 32 numbers given out of 64. Variant 8. | zuzuzi.com

Medium 8x8 Hidoku Puzzle (N1)

Medium 8x8 Hidoku alone on its page: 27 numbers given out of 64. Variant 1.
Medium 8x8 Hidoku alone on its page: 27 numbers given out of 64. Variant 1. | zuzuzi.com

Medium 8x8 Hidoku Puzzle (N2)

Medium 8x8 Hidoku alone on its page: 27 numbers given out of 64. Variant 2.
Medium 8x8 Hidoku alone on its page: 27 numbers given out of 64. Variant 2. | zuzuzi.com

Medium 8x8 Hidoku Puzzle (N3)

Medium 8x8 Hidoku alone on its page: 27 numbers given out of 64. Variant 3.
Medium 8x8 Hidoku alone on its page: 27 numbers given out of 64. Variant 3. | zuzuzi.com

Medium 8x8 Hidoku Puzzle (N4)

Medium 8x8 Hidoku alone on its page: 27 numbers given out of 64. Variant 4.
Medium 8x8 Hidoku alone on its page: 27 numbers given out of 64. Variant 4. | zuzuzi.com

Medium 8x8 Hidoku Puzzle (N5)

Medium 8x8 Hidoku alone on its page: 27 numbers given out of 64. Variant 5.
Medium 8x8 Hidoku alone on its page: 27 numbers given out of 64. Variant 5. | zuzuzi.com

Medium 8x8 Hidoku Puzzle (N6)

Medium 8x8 Hidoku alone on its page: 27 numbers given out of 64. Variant 6.
Medium 8x8 Hidoku alone on its page: 27 numbers given out of 64. Variant 6. | zuzuzi.com

Medium 8x8 Hidoku Puzzle (N7)

Medium 8x8 Hidoku alone on its page: 27 numbers given out of 64. Variant 7.
Medium 8x8 Hidoku alone on its page: 27 numbers given out of 64. Variant 7. | zuzuzi.com

Medium 8x8 Hidoku Puzzle (N8)

Medium 8x8 Hidoku alone on its page: 27 numbers given out of 64. Variant 8.
Medium 8x8 Hidoku alone on its page: 27 numbers given out of 64. Variant 8. | zuzuzi.com

Hard 8x8 Hidoku Puzzle (N1)

Hard 8x8 Hidoku alone on its page: few clues for a 64-step path. Variant 1.
Hard 8x8 Hidoku alone on its page: few clues for a 64-step path. Variant 1. | zuzuzi.com

Hard 8x8 Hidoku Puzzle (N2)

Hard 8x8 Hidoku alone on its page: few clues for a 64-step path. Variant 2.
Hard 8x8 Hidoku alone on its page: few clues for a 64-step path. Variant 2. | zuzuzi.com

Hard 8x8 Hidoku Puzzle (N3)

Hard 8x8 Hidoku alone on its page: few clues for a 64-step path. Variant 3.
Hard 8x8 Hidoku alone on its page: few clues for a 64-step path. Variant 3. | zuzuzi.com

Hard 8x8 Hidoku Puzzle (N4)

Hard 8x8 Hidoku alone on its page: few clues for a 64-step path. Variant 4.
Hard 8x8 Hidoku alone on its page: few clues for a 64-step path. Variant 4. | zuzuzi.com

Hard 8x8 Hidoku Puzzle (N5)

Hard 8x8 Hidoku alone on its page: few clues for a 64-step path. Variant 5.
Hard 8x8 Hidoku alone on its page: few clues for a 64-step path. Variant 5. | zuzuzi.com

Hard 8x8 Hidoku Puzzle (N6)

Hard 8x8 Hidoku alone on its page: few clues for a 64-step path. Variant 6.
Hard 8x8 Hidoku alone on its page: few clues for a 64-step path. Variant 6. | zuzuzi.com

Hard 8x8 Hidoku Puzzle (N7)

Hard 8x8 Hidoku alone on its page: few clues for a 64-step path. Variant 7.
Hard 8x8 Hidoku alone on its page: few clues for a 64-step path. Variant 7. | zuzuzi.com

Hard 8x8 Hidoku Puzzle (N8)

Hard 8x8 Hidoku alone on its page: few clues for a 64-step path. Variant 8.
Hard 8x8 Hidoku alone on its page: few clues for a 64-step path. Variant 8. | zuzuzi.com

Planning a Long Path

On a grid this size, it pays to look at the whole board before writing. Mark the regions that the path must still cross, and make sure that no group of empty cells ends up cut off from the rest.

When a Region Gets Isolated

If a few empty cells can only be reached through one narrow passage, the path has to enter and leave them in a way that fits the numbers. Spotting such pockets early often decides a hard grid.

For Experienced Solvers

The 8x8 grids are the longest and the most demanding of the set. Solvers who enjoy the 7x7 puzzles will find the same rules with more to plan.

Frequently Asked Questions

How long is the path in an 8x8 Hidoku?

It visits all 64 cells, from 1 to 64, each number in a cell that touches the previous one.

What helps on the hardest grids?

Look for cells with few free neighbors: a cell touching only two empty cells must sit inside a stretch of the path that passes through both.