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Train Tracks
Lay one continuous railway from the entry stub to the exit stub. Fit straight and curved pieces into the grid so that the row and column track counts match the clues.
Rules
- Build one continuous track from the entry stub to the exit stub.
- Row and column clues show how many cells in that line are track.
- Track pieces are straight or curved. No junctions and no loops.
Controls
- Pick a track piece, an X (no-track), a ? (unknown), or the eraser from the toolbar, then click a cell to apply it.
- Click and drag across cells to apply the selected tool to several cells in one stroke.
- Right-click a cell to clear it.
- On mobile, tap a toolbar button to pick a tool, then tap or drag across cells to apply it. Long-press a cell to clear it.
Tips & Tricks
- A clue of 0 means the whole row or column is empty. Mark every cell as no-track.
- When a clue equals the number of unknown cells left in its line, every one of them is track.