For what it's worth, I just spent ~10 minutes looking for a solid source on this and couldn't find confirmation.
The closest I found was a bio[1], which includes the following:
> The Institute set as a prize competition subject the propagation of heat in solid bodies for the 1811 mathematics prize. Fourier submitted his 1807 memoir together with additional work on the cooling of infinite solids and terrestrial and radiant heat. Only one other entry was received and the committee set up to decide on the award of the prize, Lagrange, Laplace, Malus, Haüy and Legendre, awarded Fourier the prize.
So it's not entirely wrong, but I think that all-star team was not his defense committee.
I think in general the rule is this:
- Any Ms in the correct position turn green (duh)
- If there are X Ms remaining in the answer, turn the first X (non-green) Ms in the guess yellow
The closest I found was a bio[1], which includes the following:
> The Institute set as a prize competition subject the propagation of heat in solid bodies for the 1811 mathematics prize. Fourier submitted his 1807 memoir together with additional work on the cooling of infinite solids and terrestrial and radiant heat. Only one other entry was received and the committee set up to decide on the award of the prize, Lagrange, Laplace, Malus, Haüy and Legendre, awarded Fourier the prize.
So it's not entirely wrong, but I think that all-star team was not his defense committee.
[1] https://mathshistory.st-andrews.ac.uk/Biographies/Fourier