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HOW TO PLAY
Put a digit from 1-9 in each empty cell such that:
1. Every digit shows up ONLY ONCE in each row,
2. Every digit shows up ONLY ONCE in each column,
3. Every digit shows up ONLY ONCE in each 3x3 box.
ACCOUNTING
For every digit you place you earn 10 points. However, if you delete or change a digit you will instantly lose 20 points from your earning!
When stuck, you can buy a digit at the cost of 75 points, and a random (empty) cell will be filled with it.
Rewinding the puzzle (restart from beginning) will cost you 200 negative points. All manually placed digits will be cleared except your bought digits.
Enabling the Help costs 100 negative points per puzzle and is valid until the puzzle is solved.
Difficulty level. Before starting (placing the first digit), you may select an easier level. Depending on this level you will get additional digits placed into the puzzle. This will cost 50 points for each digit per level chose. This also affects the max ROI obtainable.
After completely solving a puzzle, your net earning position (positive or negative) will be passed to your Gems balance automatically. Then a fresh puzzle will be presented.
