Rodolfo Kurchan关于a(5)=12的解:
+---+---+---+---+---+
| 1 | | | 4 | 3 |
+---+---+---+---+---+
| 6 | | | | 5 |
+---+---+---+---+---+
| | | | 11| 7 |
+---+---+---+---+---+
| | | | | 9 |
+---+---+---+---+---+
| 8 | 10| 12| | 2 |
+---+---+---+---+---+
Rodolfo Kurchan关于a(2)到a(6)的解决方案。
Giorgio Vecchi提出的a(7)到a(10)的解决方案。