▁' d ' ▁pa wn ▁for wards ▁to ▁support ▁the ▁' c ' ▁pa wn . ▁ 4 8 ... ▁dx e 5 ▁ 4 9 . ▁d 6 ▁K c 8 ▁ 5 0 . ▁d 7 + ▁K d 8 ▁ ▁White ▁forces ▁check mate ▁in ▁three ▁moves . ▁ ▁La ▁Société ▁des ▁Am ateurs ▁La ▁Société ▁des ▁Am ateurs ▁was ▁a ▁group ▁of ▁an ▁unknown ▁number ▁of ▁ch ess ▁master s ▁and ▁players ▁at ▁the ▁C afé ▁de ▁la ▁Rég ence ▁in ▁Paris ▁and ▁authors ▁of ▁the ▁Tra ité ▁des ▁Am ateurs . ▁Only ▁four ▁master s ▁of ▁the ▁group ▁( who ▁were ▁considered ▁the ▁strong est ) ▁are ▁known : ▁Bernard , ▁Car lier , ▁Leg er ▁and ▁Verd oni . ▁A part ▁from ▁Verd oni ▁( who ▁is ▁the ▁only ▁one ▁of ▁the ▁Am ateurs ▁with ▁his ▁own ▁entry ▁in ▁the ▁Oxford ▁Comp an ion ▁to ▁Ch ess ), ▁not ▁very ▁much ▁is ▁known ▁about ▁the ▁lives ▁of ▁these ▁master s . ▁Their ▁first ▁names , ▁places ▁and ▁dates ▁of ▁birth ▁or ▁death ▁are ▁generally ▁unknown ▁( although ▁Verd oni ' s ▁death ▁year ▁is ▁known ). ▁However , ▁they ▁appear ▁period ically ▁in ▁the ▁ch ess ▁literature ▁of ▁the ▁time ▁and ▁consequ ently ▁it ▁is ▁possible ▁to ▁provide ▁some ▁details ▁on ▁their ▁lives ▁and ▁playing ▁styles . ▁Conc ern ing ▁their ▁games , ▁several ▁of ▁Verd oni ' s ▁games ▁are ▁known , ▁while ▁only ▁one ▁game ▁of ▁Bernard ▁and ▁Car lier ▁playing ▁together ▁and ▁winning ▁against