It was only then, as the tray set the glasses on the table, that Gurgeh realised the cards he happened to be holding, which he had lifted up to look for his hidden-piece wafer, were Mr Dreltram's remaining mine-cards. Gurgeh looked at them — they were still face down; he hadn't seen where the mines were — and understood what Mr Dreltram must be thinking.

He put the cards back where he'd found them. "I'm very sorry," he laughed, "I was looking for my hidden piece."

He saw it, even as he spoke the words. The circular wafer was lying, uncovered, almost right in front of him on the table. "Ah," he said, and only then felt the blood rise to his face. "Here it is. Hmm. Couldn't see it for looking at it."

He laughed again, and as he did so felt a strange, clutching sensation coursing through him, seeming to squeeze his guts in something between terror and ecstasy. He had never experienced anything like it. The closest any sensation had ever come, he thought (suddenly, clearly), had been when he was still a boy and he'd experienced his first orgasm, at the hands of a girl a few years older than him. Crude, purely human-basic, like a single instrument picking out a simple theme a note at a time (compared to the drug-gland-boosted symphonies sex would later become), that first time had nevertheless been one of his most memorable experiences; not just because it was then novel, but because it seemed to open up a whole new fascinating world, an entirely different type of sensation and being. It had been the same when he'd played his first competition game, as a child, representing Chiark against another Orbital's junior team, and it would be the same again when his drug-glands matured, a few years after puberty.

Mr Dreltram laughed too, and wiped his face with a handkerchief.

Gurgeh played furiously for the next few moves, and had to be reminded by his opponent when the eighty-move deadline came up. Gurgeh turned over his hidden piece without having checked it first, risking it occupying the same square as one of his revealed pieces. The hidden piece, on a sixteen-hundred-to-one chance, turned up in the same position as the Heart; the piece the whole game was about; the piece one's opponent was trying to take possession of.