Sudoku and Pipes are both grid-based logic puzzles you solve by pure deduction, so solvers naturally wonder how alike they really are. The short answer: Pipes is distant to Sudoku. Below we lay out what the two share, where they part ways, and whether the skills you have built on Sudoku will carry over.
- Grid: Square grid of pipe tiles
- Closeness to Sudoku: Distant
- Also called: Net, NetWalk, FreeNet
What is Pipes?
Rotate each tile so all the pipe ends link into one connected network with no loose ends and no closed loops. Here are the rules in full:
- Every cell holds a pipe piece — straight, elbow, T-junction or cross — that you may only rotate in place.
- Rotate the tiles so that all pipes join into a single connected network.
- No opening may point at a wall or a blank neighbour, and the network holds no closed loops.
What a Pipes puzzle looks like
Pipes (also called Net or NetWalk) fills a grid with pipe pieces you can only rotate. You spin the tiles until every opening links up into one connected network — no piece pointing at a wall, no closed loops. Here is a small connected set.
A cross-junction tile feeds four end tiles — one connected network, with every opening met and no loops.
Both are deduce-don't-guess logic puzzles solved by reading each cell's forced state from its neighbours — but Pipes builds a network by rotating tiles rather than placing digits, so none of Sudoku's digit techniques carry across.
What Pipes shares with Sudoku
- Both are single-solution logic puzzles you crack without guessing.
- Both reward spotting forced local moves — a tile whose rotation its neighbours already fix.
How Pipes differs from Sudoku
- You rotate tiles to build a network; you never place a digit.
- The constraint is connectivity with no loops, not 1–9 per row, column or box.
Do Sudoku skills transfer?
Nothing places digits, so no Sudoku technique carries over directly — but reading each cell's forced state from its surroundings is exactly the scanning habit Sudoku trains.
The verdict
Pipes shares Sudoku's deduce-don't-guess spirit but swaps digits for spatial rotation — a network-building puzzle, not a filling one.