Little Railways: Train Tracks

Little Railways is a logic puzzle in the family of sudoku and nonograms. Each board hides one railway line: lay a single track from station A to station B, with as many pieces in each row and column as the numbers on the edge say. Every board has exactly one solution, and you can always reach it by reasoning. No blind guessing. HOW IT PLAYS • One track, from A to B. It never crosses itself and never closes a loop. • The numbers say how many squares of each row and column carry track. • Drag to lay rail. Tap to plant a pine where no track goes, or to save a square for track. • Tap a number to fill in what is already certain on its line. BADGER OR BEAR You work with one of them. The badger is the station master: proud, punctual, rules things out first. The bear drives the engine: lays first, asks later. Either will tell you where to look for one ticket. When a count breaks, the board…