A route
Track leaves the grid only at A and B.
A quick refresher
One complete railway.
Count squares. Match the rails. Keep it all connected.
- Count track squares. Numbers above the grid give the column totals. Numbers on the right give the row totals. A turn and an A or B square each count as one track square.
- Use straight or turning pieces. Each track square connects through two sides. Keep the printed pieces in shaded squares exactly as they are.
- Make one railway. A route joins A to B. A loop makes one closed circuit. All track belongs to that one route or loop.
- Match the edges. Rails meet across square edges. No branches, crossings, diagonal joins or loose ends. Neighbouring track squares do not always have to join.
A loop
No entrance or exit. One closed circuit.
A useful first move
A row or column with a count of zero is empty. When a line has all its track squares, mark the remaining squares empty. When every remaining square is needed, they must all contain track.
Reading the walkthrough
An X means empty. A dot means track belongs in the square, with its direction still to come. A short rail shows a connection that is already known; it is not yet a finished piece. Printed pieces are shaded.
The orange highlight shows where to look. Purple marks are a temporary trial, which must be ruled out before returning to the confirmed track.