Yeah … I know it sounds deranged, but this is actually a pastime we spent numerous hours playing in the fall. Two player game.Possibly a local thing in East Flatbush in Bklyn. We had a nearby cemetery (Holy Cross) where Chestnuts were plentiful …. Basically you’d string Chestnuts on a lace from your pair of Chuck Connors Allstars (a.k.a. Converse)You’d then take turns whacking the other person’s Chestnut with yours & vice versa until one player’s Chestnut cracked and came off the shoelace. The surviving Chestnut was thereby a “1 Killer”. Each subsequent battle that you won with that Chestnut added a Kill to it’s lore. Nail polish was ferquently applied to the Chestnuts to toughen the outer shell. Sheesh. maybe the kids are right and we were deranged !