"It has been my experience that all humans play illogically, Captain. Am I mistaken?"
Jim grinned, amused at the assumption. "And exactly how many humans have you played against, Spock?"
"Three, if you include my mother. But she was never fond of chess, and I believe she only played it to indulge me." Spock moved his rook to the top layer as he spoke - the second most likely option of the five Jim had figured he might take. There was something to be said about playing against the most logical man he knew.
"And who was this mysterious third illogical human?" Jim asked teasingly, making his own move quickly.
"I do not know. We only ever played online, and never exchanged our real names."
Huh. Jim had thought most Vulcans didn't venture out to forums where humans played. But then, Spock wasn't must a Vulcans. He sighed deeply, fondly thinking back upon his own online acquaintances.
"Ah, I understand. I had a few of those in my teenage years myself. What site did you play on?"
Spock raised an eyebrow. "I would not expect you to have heard of it, Captain; as children on Vulcan there are a number of educational sites which we have access to via our school profiles. My... adversary had, in fact, managed to confound the directory into believing he was a student."
Jim stared at him. And blinked. And stared at him again.
"Spock," he said slowly. "What is the likelihood of two humans hacking the Vulcan school system to gain access to 5D chess in 2247?"
"I have very little data upon which to make such a calculation," replied Spock.
Spock didn't roll his eyes, but Jim was almost certain he wanted to.
"If you insist, Captain. I would put it at 1.254 billion to 1 - but that is a very approximate guess indeed."
Jim chuckled, shaking his head in disbelief. "Of all the Vulcans in the world, it had to be you, didn't it?" he asked, his eyes brightening with affection.
"I got bored of playing only against humans when I was a teenager, Spock. / made a fake Vulcan school account, when I realised why I couldn't find any other Vulcan teenagers online. I figured it would be a fun challenge. But only one ever played against me more than a couple of times - the others never seemed to appreciate my playing style." Jim grinned. "The illogic of it, you know?"
Spock's eyebrows - both of them - had been rising higher and higher as Jim has been speaking, until he had almost no space on his forehead left.
"I see," he said. "That is quite the coincidence."
"Isn't it just," replied Jim, moving his knight to queen's level three. "And it's just as impressive how easily you still lose to me. Check."
"Easily, Captain?" responded Spock, eyes glinting with good humour. At least, Jim thought they were.
"I'll have you in two moves," said Jim confidently.
"But I shall have you in one," said Spock, moving his queen in front of Jim's king. "Checkmate."
Jim looked at the board, replaying Spock's last few moves in his mind, and realising that none of them had been by the book. He looked back at his friend, a broad smile breaking over his face.
"Why, Mr Spock!" he exclaimed. "I do believe that move was quite illogical!"