Try a phrase

Works out the addresses a phrase leads to and compares them with the prize address, 1KfZGvwZxsvSmemoCmEV75uqcNzYBHjkHZ.

Everything happens in this tab. The page's security policy blocks network requests, and nothing is stored or put in the address bar. It shows addresses only: it has no way to show a key or to send a transaction.

This page is for puzzle guesses. Do not type the phrase of a real wallet here, or into any other web page.

Phrase Passphrase or seed extension (optional)

Seed type

BIP39 Electrum (2.0 and later)

Derivation paths, one per line

What is checked

Each path in both key forms, compressed and uncompressed, as a legacy address beginning with 1. The prize address is that type.
BIP39 uses the words as typed, with case kept, so a phrase with a bad checksum or a word outside the list still gets addresses. The page tells you when that is the case.
Electrum lower-cases the words and drops accents, as Electrum does.
Old Electrum 1.x seeds are not covered here.
The derivation is the search engine's, checked in tests against its CPU reference: 60 random phrases on every listed path and both key forms, plus its ten known answers.