How do you gain points?

• For each correct entry you score 5 times a multiplier. The multiplier starts at 20 and is decremented every 15 seconds.
• For each incorrect entry, points are deducted according to the same formula but are multiplied by an error count. You are severly punished for incorrect entries to discourage guessing.
• If you complete the puzzle within the allotted time, you score a bonus 500 points plus 2 points for every second left.
• Using the pencil does not affect point scoring in any way.

Timer

Your time will be recorded here. If you want to take a break or surrender, simply press the button and the time will be paused.

Hints

There are some tools you can use to solve the game:

• Pencil
  This will help you to take some notes.
• Hint
  Will help you to fill the tile with the right number.
• Eraser
  Use this to correct the number.