Puzzles

Peg Solitaire: Acorn Jump.

Jump acorns over each other to clear the board until a single acorn remains.

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Enable JavaScript to play. Your game saves stay in this browser.How to playTap or drag an acorn, then tap a highlighted hole. Keyboard: arrow keys move between holes, Enter or Space picks up and jumps, Escape drops, H asks for a hint.

An acorn jumps straight over one neighbouring acorn into the empty hole just beyond it. The jumped acorn leaves the board.

Cross boards jump along rows and columns; on the triangle, jumps follow all three lines.

One acorn left solves the board. Leaving it in the centre, or the ringed goal hole, is a perfect finish.

The game ends early when no jump is possible. Undo takes back jumps; Hint finds a jump that still leads to a solution, searching in your browser, and on a lost board offers to undo back to the last winnable position.

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How to play

Goal. Jump acorns over one another, removing each acorn you jump, until a single acorn is left. Leaving it in the centre (or the ringed goal hole) is a perfect finish.

Jumping

An acorn jumps over one neighbouring acorn into the empty hole directly beyond it. The jumped acorn is removed.
On the cross and octagon boards jumps run along rows and columns, never diagonally. On the triangle they follow all three lines.
Tap or drag an acorn; the holes it can reach light up. The board ends early when no jump is left.

One jump. The acorn on the left jumps over its neighbour into the empty ringed hole, and the neighbour leaves the board.

Boards and help

Challenges are small patterns on the cross board. Triangle 15, English 33 and French 37 start full with one empty hole.
A French board started from the centre can never end with one acorn, so its games begin from other holes.
Undo takes back jumps. Hint searches in your browser for a jump that still leads to one acorn, preferring a perfect finish, and tells you when no solution remains.