Solution: MATH 200 Lie Groups
Answer: MASS CLAIM
Written by Kenny Young
A good place to start this puzzle is to note that the 9x and 9/ cages on the top row cannot both contain a 9, so one contains a 9 and the other a lie. This means that the other 5 cells on the top row are not lies and also not 9’s. Then the bottom cell of the 25+ cage has to be greater than 9, so it is a lie and the rest of that cell’s row and column are true.
The solved grid is as follows:
| 3 | 5 | 6 | 8 | 7 | 4 | 2 | 1 | 9 |
| 9 | 1 | 8 | 7 | 4 | 3 | 6 | 5 | 2 |
| 1 | 6 | 9 | 4 | 3 | 2 | 5 | 8 | 7 |
| 2 | 3 | 7 | 9 | 8 | 5 | 1 | 4 | 6 |
| 4 | 2 | 3 | 6 | 5 | 8 | 7 | 9 | 1 |
| 8 | 4 | 2 | 3 | 6 | 1 | 9 | 7 | 5 |
| 7 | 8 | 5 | 1 | 9 | 6 | 4 | 2 | 3 |
| 5 | 7 | 4 | 2 | 1 | 9 | 3 | 6 | 8 |
| 6 | 9 | 1 | 5 | 2 | 7 | 8 | 3 | 4 |
To get the answer, list the lies in 1-9 order:
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
Converting to the alphabet, this gives the answer MASS CLAIM.