LogicPuzzles.io

Connection puzzles

Join things up. Hashiwokakero connects numbered islands with straight bridges until everything forms one network; Numberlink, coming soon, links matching numbers with paths that never cross. The clues say how much connects where, and the deductions come from what has to reach what.

1puzzle type
1,700verified grids
0solved today

All connection puzzles

Hashiwokakero
Hashiwokakero橋をかけろ
Connect islands with bridges matching each number
7×710×1013×13Gentle1,700 puzzles
NumberlinkナンバーリンクComing soon
Join matching numbers with paths that never cross
6×69×912×12Medium

What makes a connection puzzle

A connection puzzle is finished when the grid is one connected whole. In Hashiwokakero every island shows how many bridges touch it, bridges run horizontally or vertically, at most two join the same pair, and none may cross. Numberlink will drop the counts entirely: each pair of numbers is joined by one path and the paths fill the grid without crossing.

The habit that helps most is looking at the islands with the fewest options. An island in a corner with a 4 must have two bridges each way; an 8 in the open has two in every direction; a 1 next to another 1 cannot join it, or the pair would be cut off from everything else. Start with a 7×7 Hashiwokakero, then try the 13×13 once the connectivity rule feels natural.

FAQ

No. Bridges are straight horizontal or vertical lines between islands and they never cross each other or pass over an island.