▁places ▁in ▁Mam as ani ▁County <0x0A> </s> ▁C uck oo Ch ess ▁is ▁an ▁advanced ▁free ▁and ▁open - source ▁ch ess ▁engine ▁under ▁the ▁GNU ▁General ▁Public ▁License ▁written ▁in ▁Java ▁by ▁Peter ▁Ö ster l und . ▁C uck oo Ch ess ▁provides ▁an ▁own ▁GUI , ▁and ▁option ally ▁supports ▁the ▁Universal ▁Ch ess ▁Interface ▁protocol ▁for ▁the ▁use ▁with ▁external ▁GUI s ▁such ▁as ▁Arena . ▁An ▁Android ▁port ▁is ▁available , ▁where ▁its ▁GUI ▁is ▁also ▁based ▁on ▁Peter ▁Ö ster l und ' s ▁Stock fish ▁port ▁dub bed ▁D roid F ish . ▁ ▁The ▁program ▁uses ▁the ▁Ch ess ▁C ases ▁ch ess ▁font , ▁created ▁by ▁Matth ieu ▁L esch em elle . ▁The ▁name ▁C uck oo Ch ess ▁comes ▁due ▁that ▁the ▁trans position ▁table ▁is ▁based ▁on ▁C uck oo ▁has hing . ▁ ▁Android ▁app ▁based ▁ch ess ▁g aming ▁app ▁D roid fish ▁emp lo ys ▁both ▁C uck oo Ch ess ▁and ▁Stock fish ▁ch ess ▁engines .. ▁Similarly , ▁K ick st arter ▁fund ed ▁A I ▁based ▁virtual ▁reality ▁ch ess ▁game ▁Square ▁Off ▁also ▁uses ▁C uck oo Ch ess ▁engine . ▁ ▁It ▁has ▁an ▁E LO ▁rating ▁of ▁ 2 5 8 3 ▁( as ▁of ▁July ▁ 2 0 1 8 ) ▁and ▁a ▁rank ▁of ▁ 1 3 5 ‑ 1 3 7 ▁in ▁the ▁Computer ▁Ch ess ▁R ating ▁List . ▁ ▁See ▁also ▁ ▁Computer ▁Ch ess ▁