959FTrail

Read the clues, mark the hazards, and find a safe route in a focused offline logic game.

Short sessions
Choose a beginner, intermediate, or advanced board designed for a few minutes of careful deduction. Every route begins with a safe first reveal, and covered areas open together when the clues show they are safe.

Clear reasoning
Numbers show how many hazards touch each revealed cell. Use single-cell deductions, remaining counts, and overlapping clues to work forward without relying on color alone. Cells use distinct symbols and states for unknown, revealed, marked, questioned, and hazard positions.

Play your way
Tap to reveal, long press to mark, or switch on Mark mode for a steady one-handed control. Pause at any time, restart a route, or leave and return later with the board and timer preserved on your device.

Learn as you play
The guide introduces the three core deduction patterns with concise examples. Sixty progressive chapter routes add one new idea at a time, including an irregular playable area and a locked safe boundary. Random routes and a local daily board provide more variety without accounts, ads, or network access.

Review every result
When a hazard is triggered, the route pauses and highlights the relevant result for review. Completed routes show time, mis-marks, and progress toward your local record. Your statistics and best times remain private on this device.