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: | Jun.App. |
页码: | 8-8 |