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COFFEE BREAK
| 题名： | COFFEE BREAK |
| 正文语种： | eng |
| 摘要： | The rules of the game are simple: each of the nine blocks has to contain all the numbers 1-9 within its squares. Each number can only appear once in a row, column or box. Each vertical nine-square column, or horizontal nine-square line across, within the larger square, must also contain the numbers 1-9, without repetition or omission. |
| 出版年： | 2022 |
| 期刊名称： | Transport engineer |
| 期： | Sep.App. |
| 页码： | 8-8 |
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