Trail

Draw one path through every cell, hitting the numbers in order.

One line, every cell, the numbers in order. It takes seconds to explain, and the last few cells are where you find out you went wrong.

How to play

1. Start on 1 and drag from cell to neighbouring cell to draw your path.
2. Pass through the numbers in order and end on the last one.
3. The path must go through every cell of the grid. Drag back along it to undo.

Scoring

Speed counts: 1000 points for an instant solve, falling steadily to 400 at the last second. Not solved: 0.

What it works

• Spatial intelligence You look for a route that covers the whole grid.
• Logical reasoning You plan ahead so you do not cut off a corner you still need.