Electrum derivation path

[JJhoffer]

Hi, at first I love your projects and sorry for my bad English. I want to solve an electrum bip39 seed puzzle from 2020 the address starts with a 1...., and have found 34 seed words, I only need 24 from them so I used the POOL example. My question is, which derivation path I have to use? My tests with m/0/0, m44/0/0/0/0 didn't produce any findings.
Thank you

[PawelGorny]

If your seed words comes from Electrum, I am afraid the program will not help, as they use other dictionary.
But if it is "pure" bip39 (just used in Electrum), it could work, default path should work.
Are you able to reproduce your tests using https://iancoleman.io/bip39/ ?

[JJhoffer]

I have tested a solved seed from another puzzle with only 12 words in
https://iancoleman.io/bip39/ with the result of invalid mnemonic
Electrum Seed Tester from FarCanary works it gave me the result in m/0/9 with the correct btc address
https://github.com/FarCanary/ElectrumSeedTester
A try with LostWord POOL and m/0/9 was negativ.
What is my fault or the problem?
Thanks for your support