Rules
Setup
A 9×9 grid starts with 9 Gold digits (1–9) in valid positions. Two players — Blue and Red — take turns.
Gameplay
- Blue goes first. Players alternate.
- Place a number (1–9) in an empty cell. No passing.
- The number must not already exist in the same row, column, or 3×3 block.
Game End
The game ends when the board is full or no legal move exists.
Scoring
27 regions (9 rows + 9 columns + 9 blocks). The player with more numbers in a region wins 1 point. Gold counts for neither. Ties award no point.
Winner
Most points wins. If tied, the player who placed the last number wins.