Triangle Rule
| 2 | 1 | |||||||||||
| 3 | 2 | |||||||||||
| 5 | 3 | |||||||||||
| 1 | ||||||||||||
We just eliminated 3 from the yellow field. But we already eliminated 2 from the yellow field in an earlier step.
| 2 | 1 | |||||||||||
| 3 | 2 | |||||||||||
| 5 | 3 | |||||||||||
| 1 | ||||||||||||
We just eliminated 3 from the yellow field. But we already eliminated 2 from the yellow field in an earlier step.