Alien got the Buddha question right. The other solutions still don’t work. Her solution was a little different than mine, but the key is to start with balancing 4 against 4, then you’ll need to have both putting a buddha that you know to be normal back in, and also some switching of a buddha from one group to another.
Here’s my solution:
W1 (Weigh One)
1,2,3,4 vs 5,6,7,8
If it’s equal then possibilities are 9L (9 is light), 9H, 10L, 10H, 11L, 11H, 12L, 12H go to W2.1
If 1,2,3,4 > 5,6,7,8 then 1H, 2H, 3H, 4H, 5L, 6L, 7L or 8L go to W2.2
If 1,2,3,4 < 5,6,7,8 it’s the same but opposite
W2.1
9,10 vs, 11, X (X is a buddha you know to be normal)
If equal then 12H or 12L (just weigh one against X for 3rd weigh)
If 9,10 > 11,X, then 9H, 10H, or 11L (weigh 9 vs 10 to find out)
W2.2
1,2,6 v 5,3,X
If same then 4H, 7L, 8L (weigh 7 vs 8 to find out)
If 1,2,6 > 5,3,9 then 1H, 2H, 5L (weigh 1 vs 2 to find out)
Congrats to Alien
Brian