| site address | sudoku.by/hyper |
| site title | Hyper Sudoku - Windoku Extra-Region Puzzles Free Online | Sudoku.by |
| status of last verification | - no comments
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| site size & charset | 11160; utf-8; |
| meta description | Play free Hyper Sudoku online. Four extra 3×3 regions (shown in green) add powerful new constraints beyond classic Sudoku. |
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