you can look this pool
https://rth.crazypool.org/#/ works with any Ethereum mining software !!!!
RTH Ethashb3 Mining
Claymore miner works fine 112 mhs low devfee
Phoenixminer 0.65 Devfee
Teamredminer 1.00 Devfee
Teamblackminer 0.5 Devfee
Lolminer 1.00 Devfee
Miniz miner 107 Mhs 1.00 Devfee
T-rex miner 1.00 Devfee
Gminer 0.65 Devfee with Old version
NBminer 0.70
SBminer 0.50
Ethminer 112 MHS 0.0 Zero Devfee
Retminer V2 108 MHS 0.00 Devfee
NfsMiner v1.3 102 Mhs 0.00 No stinking Devfee !!!!!!
There must be a mistake. EthashB3 is a different algorithm, you can't mine it with ethash-only software.