No adjacent cells can sum, multiply, divide or subtract to give you 5 or 10

Toroidal grid: The grid displays a top-bottom right-left wrapping to

give you a toroidal (doughnut) shape

And look at this board state, which steps do solve this puzzle?

- Code: Select all
`+-----------+-----------+-----------+`

| 11 4 3 | 1 8 7 | 6 2 9 |

| 9 2 6 | 3 4 11 | 8 1 7 |

| 8 1 7 | 6 2 9 | . . . |

+-----------+-----------+-----------+

| 1 7 8 | 9 6 2 | . . . |

| 2 6 9 | 11 3 4 | 7 8 1 |

| 4 3 11 | 7 1 8 | 9 6 2 |

+-----------+-----------+-----------+

| 3 11 4 | 8 7 1 | 2 9 6 |

| 6 9 2 | 4 11 3 | 1 7 8 |

| 7 8 1 | 2 9 6 | 3 4 11 |

+-----------+-----------+-----------+

Do you mean with adjacent all 8 surrounding, or 4 with + or 4 with x?

And the math operators, on which cell are they used?

And 1 operator for the target adjacent cells?