Aces plateau

According to legend, a strange ghost walks through the mountains – an old man two meters tall with a gray beard to his knees. With him always... a chessboard. He appears suddenly and also suddenly disappears. He comes to the shepherds and offers them to play chess. If someone plays with him and gives him tea, then after the old man thanks and leaves, even more amazing things begin to happen. The flock becomes as if enchanted, no wolf will touch the animals. The hospitable shepherd begins to get lucky in everything. The herd grows and multiplies. But if you refuse the White Old man in the game - wait for misfortune.