Explore 5 million Shogi mate situations in SFEN format

October 6, 2025 by shogishack

Recently, I became aware of a text file archive containing 5 million Shogi mate situations listed in SFEN format, and it is in the public domain. This archive was released in December 2020, so I was nearly five years late to discover it. The author is Yaneurao-san, the person behind one of the strongest and […]