The wind was blowing outside as it does on bad nights in November, coming up with moans from the South, towards which the tavern faced with all its leaded panes, so that none but I was able to hear his voice as Jim Bunion gave up his secret. They had sailed for years, he told me, with Bill Snyth; and on their last voyage home Bill Snyth had died. And he was buried at sea. Just the other side of the line they buried him, and his pals divided his kit, and these three got his crystal that only they knew he had, which Bill got one night in Cuba. They played chess with the crystal. And he was going on to tell me about that night in Cuba when Bill had bought the crystal from the stranger, how some folks might think they had seen thunderstorms, but let them go and listen to that one that thundered in Cuba when Bill was buying his crystal and they'd find that they didn't know what thunder was. But then I interrupted him, unfortunately perhaps, for it broke the thread of his tale and set him rambling a while, and cursing other people and talking of other lands, China, Port Said and Spain: but I brought him back to Cuba again in the end. I asked him how they could play chess with a crystal; and he said that you looked at the board and looked at the crystal, and there was the game in the crystal the same as it was on the board, with all the odd little pieces looking just the same though smaller, horses' heads and whatnots; and as soon as the other man moved the move came out in the crystal, and then your move appeared after it, and all you had to do was to make it on the board. If you didn't make the move that you saw in the crystal things got very bad in it, everything horribly mixed and moving about rapidly, and scowling and making the same move over and over again, and the crystal getting cloudier and cloudier; it was best to take one's eyes away from it then, or one dreamt about it afterwards, and the foul little pieces came and cursed you in your sleep and moved about all night with their crooked moves.