I tried my game again- much easier when 3 notes repeat:
Melodecho #0312941
Solved in 1 attempts!
The melody was: 1,3,1,1,2,5
https://www.fractalkitty.com/melodecho/
#mtbos - how many of the possibilities have the same spacing between notes? How many have only 3 repeats? What other curiosities are there?
@fractalkitty
Melodecho #1633851
Solved in 2 attempts!
The melody was: 6,6,9,6,2,3
fractalkitty.com/melodecho
One off
Nice game!