Chain Sudoku: 250 Easy to Medium Chain Sudoku Puzzles 6x6 (Chain Puzzles)
| Country | USA |
| Brand | ZONE INDUSTRY CORP. |
| Manufacturer | Zone Industry Corp. |
| ItemPartNumber | S2-4MBH-100 |
| Model | S2-4MBH-100 |
| Color | S2-4MBH-100 (Blue) |
| UnitCount | 100 |
| EANs | 4710616082784 |
| ReleaseDate | 0000-00-00 |