Anyone here can educate me on Hypergammon in the real world? Is it played only for money or there is matches (to 3, 5 etc.)? is it common?
Thanks, Joseph On Sun, 10 May 2020 at 09:09, Philippe Michel <[email protected]> wrote: > On Sat, May 09, 2020 at 09:55:14AM -0400, Timothy Y. Chow wrote: > > > I recently learned about makehyper. A friend of mine ran it on his > > computer and it seemed to terminate successfully. I would like to be > able > > to examine the equities using my own C programs, rather than using them > > inside GNUBG. But to do this, I need to understand the format of the > > database file generated by makehyper, and I haven't been able to find a > > description of this format anywhere. Is it easy to describe? > > The format of the file is (implicitely) described in the > StartFromDatabase() function of makehyper.c : a 40 bytes header followed > by 28 bytes records each encoding 10 values: 5 outputs and 5 equities, > see the definition of the hyperequity structure at the beginning of the > file. > > Starting from that would probably lead to reinventing the wheel, though. > Starting from bearoffdump.c seems more promising since it can show the > content of hypergammon databases, either by index: > > % bearoffdump -n 2020 /usr/local/share/gnubg/hyper1.bd > > Bearoff database: /usr/local/share/gnubg/hyper1.bd > Position number : 2020 > > Information about database: > > * On disk 2-sided exact 1-chequer Hypergammon database evaluator > - generated by GNU Backgammon > - up to 1 chequers on 25 points (26 positions) per player > > Dump of position#: 2020 > > GNU Backgammon Position ID: AAACAAAABAAAAA > +13-14-15-16-17-18------19-20-21-22-23-24-+ > | | | | OOO > | | | | OOO > | | | | OOO > | | | | OOO > | | | | OO > v| |BAR| | > | | | | XX > | | | | XXX > | | | | XXX > | | | | XXX > | O | X | | XXX > +12-11-10--9--8--7-------6--5--4--3--2--1-+ > > Player Opponent > Position 25 18 > > Owned cube : -0.1276 > Centered cube : -0.2873 > Centered cube (Jacoby rule) : -0.3066 > Opponent owns cube : -0.3514 > > > Or by position ID: > > % bearoffdump -p AAACAAAABAAAAA /usr/local/share/gnubg/hyper1.bd > > Bearoff database: /usr/local/share/gnubg/hyper1.bd > Position ID : AAACAAAABAAAAA > > Information about database: > > * On disk 2-sided exact 1-chequer Hypergammon database evaluator > - generated by GNU Backgammon > - up to 1 chequers on 25 points (26 positions) per player > > Dump of position ID: AAACAAAABAAAAA > > GNU Backgammon Position ID: AAACAAAABAAAAA > +13-14-15-16-17-18------19-20-21-22-23-24-+ > | | | | OOO > | | | | OOO > | | | | OOO > | | | | OOO > | | | | OO > v| |BAR| | > | | | | XX > | | | | XXX > | | | | XXX > | | | | XXX > | O | X | | XXX > +12-11-10--9--8--7-------6--5--4--3--2--1-+ > > Player Opponent > Position 25 18 > > Owned cube : -0.1276 > Centered cube : -0.2873 > Centered cube (Jacoby rule) : -0.3066 > Opponent owns cube : -0.3514 > > > bearoffdump.c is a very short file, using functions defined in bearoff.c > to access the database file. > > Doing something similar and linking your program with bearoff.o and > possibly some other gnubg object files as needed might be the easiest > solution. > >
