Sugrelo

A logic puzzle with a twist

Challenge your mind with Sugrelo.

Fill the board using the sum and neighbor rules, and discover increasingly demanding layouts.

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123 456 789

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Rules

1. Fill every cell

Every empty space must eventually hold a number from 1 to 9.

2. Respect neighbors

Adjacent numbers must satisfy the puzzle rule set for Sugrelo.

3. Think logically

Use the structure of the board and the neighboring combinations to eliminate impossible values.