| 0 + 7 – 2 = | 5 | 8 | – 4 – 1 = | 3 | ||
| 5 | + 6 – 3 = | 8 | 3 | + 6 = 9 |
Move one symbol at a time around the nine black islands. You can re-use the symbols, but not in the same sum (which effectively means never step backwards). Solved it? Now try 9 to 0.
| 0 + 7 – 2 = | 5 | 8 | – 4 – 1 = | 3 | ||
| 5 | + 6 – 3 = | 8 | 3 | + 6 = 9 |
Move one symbol at a time around the nine black islands. You can re-use the symbols, but not in the same sum (which effectively means never step backwards). Solved it? Now try 9 to 0.