Stockfish Polyglot: Updated June, 21st 2019

WARNING: very consistent update with significant enhancement in quality of play. I suggest to anyone publishing tests with Stockfish Polyglot to repeat them with this latest version because of the substantial difference in Elo.
 
For Windows only until future updates.
This distribution is the expansion of Stockfish beta having timestamp: 1561042322 - More bonus for free passed pawn..
June, 21 2019: Source code on GitHub updated [You must be registered and logged in to see this link.].
Stockfish Polyglot is none but the very own Stockfish with the only addition of the possibility to use Polyglot (.bin) books. In order to do that I used the library polybook.h from Brainfish and merged with the Stockfish code. This new update features the 'OwnBook' checkbox as requested, so that you can easily switch from the Polyglot book to the local CTG book (Chessbase softwares) or ABK book (Arena GUI). I've wandered through GitHub to recover the 'OwnBook' checkbox code (it needed just two mere rows..), luckily I've managed to find it and extract the part I needed to use.
This distribution is enhanced by the pgo-build option.
Stockfish Polyglot comes with almost any architecture available, hence also for old 32bit operating systems like Windows XP, old machines, 64bit systems, standard machines, modern machines and power computers. It runs on Windows only this time.



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