Hi, hgm on 2008-12-27 at https://talkchess.com/viewtopic.php?t=25654 wrote:"So we will need 16 new hash keys. As long as they are not agreed upon, a perfectly workable temporary solution..."
Polyglot code has 32 unused Zobrist hash keys for white/black pawns on 1st/8th ranks.
Sorry this email arrives 17 years late. -- Alan
