There's my story, translated by Carl gibson.
The story will be soon posted on the Surnateum site and is friendly dedicated to Gede Nibo.

After Sunset

NOTE: We advise reading this story with a chess set at hand so you can actually play out the last part. Acknowledgements: Galerius and Greedo.

"Do you play chess?" I asked, pointing at the beautiful chess set adorning the coffee table. The wooden board was about a hundred years old, of a type used in certain bistros at that time. The pieces were made of turned wood.
"Not really," replied the Collector, "It's more a souvenir than a collector's item. In fact, the story isn't really about me, but one of my friends, Vincent D."
"You see, back in the seventies, my friend Vincent was a regular at The Greenwich, a quaint café in central Brussels where the clientele would often play chess – in fact they still do.
Vincent was an excellent player, capable of pulling off the most outlandish moves. He would generally go there on Saturdays in the early afternoon to play a few games. Then afterwards, we would meet for a drink and talk about magic and the rare objects that can be found at the city's flea markets.
But on that particular day, the day of our weekly get-together, my friend looked like an anaemic zombie! He was deathly pale and had dark rings around his eyes, as if he hadn't slept in a week.
Worried, I asked him if he was feeling alright. He replied that for the last few days he had been squaring off against a formidable opponent in games that left him exhausted by the time the pub closed. Mr Karl Josef Batthyàny, aka 'The Count', was a venerable gentleman and a descendant of the old Hungarian nobility. He was not only a formidable opponent, but at the end of each game, when the players traditionally shake hands, he seemed to literally drain my friend of all his remaining energy. A few weeks before, one challenger who had taken on The Count died of a heart attack right in the middle of a game. Naturally, that tragic event caused no small measure of anxiety amongst the gently ageing denizens of the café and shrouded The Count in an aura of misfortune.
I probed my friend for more information and details to help me get a handle on his adversary.
Vincent said he had trouble concentrating when playing the old man and that at critical points during the game he would make poor moves, totally contrary to his usual mode of play. He also said that Mr Batthyàny always showed up at The Greenwich after sunset and left later at night.
I suggested that I come along that very evening to watch one of their games, giving me a chance to observe this curious character.
The sun had already made its daily plunge over the horizon when a fragile old man with a refined air about him stepped through the door of the café. He was short and stooped, dressed in an old, worn frock coat, a waistcoat and an ascot tie; he looked like he had stepped straight out of a bygone era. His shoes must have walked more than a million miles, but he had a certain natural elegance about him. He removed his coat and politely greeted everyone present, then headed for our table. Vincent stood up and introduced me to The Count, who shook my hand. His hand was delicate, with translucent skin as thin as cigarette paper. Glancing at his face, I was taken aback to see it was dark blue, like a deep volcanic lake, but offset by blood-red pupils. He ordered a tea with lemon, which he sipped delicately, ignoring the sugar and accompanying biscuit.
After the customary chit-chat, Vincent opened up a chess set – the very one you see here – and set up the pieces. The game began.
Initially, my friend played with his typical brilliance. It looked to me like he would make quick work of the old man. He won the first two games without much difficulty. But then he slowly started to get distracted and make mistakes, and the next game was a draw. He then lost a game and never managed to regain his form. As I observed Mr Batthyàny, I was struck by an image from The Man of the Crowd, by Edgar Allan Poe, a story about a psychic vampire who draws sustenance from the energy of others. The texture of his skin had improved and he was sitting more upright than earlier in the evening. In fact, he now had the look of a nocturnal predator who had settled on my friend as his prey.
I secretly signalled Vincent, who suggested taking a break before playing the final game. The Count agreed and decided to pay a visit to the gents. I told Vincent what I had observed and insisted that he stop playing. He said he was unable to stop; he was visibly subjugated by the Hungarian. I knew then that the spell had to be broken at all costs.
And then I had a rather original idea. If it worked, his opponent would be very surprised indeed…
The last game began. It was obvious that Vincent was slipping drastically. He lost his queen, his rooks, a knight and a bishop – not to mention nearly all of his pawns. The Count had not lost a single piece!
By that point in the game, the layout of the board was just as you see here. There was simply no way my friend could win:
Vincent was playing White: King e3, Bishop e4, Knight d4, Pawn f3
Batthyàny was playing Black: King e8, Queen b7, Bishop d3, Bishop e7, Knight e5, Knight e6, Rook b2, Rook f6
He looked triumphant at Vincent, holding out his hand for the customary handshake.
Then, abruptly, his smiled disappeared. His hand remained frozen above the board.
Looking down at the pattern formed by the chess pieces on the board, he saw a perfect cross. Instantly, he seemed to deflate. He got up, rushed out of the café and disappeared into the inky night – never to be seen again at The Greenwich.

Thank you for this wonderful magical tale, Mr. Chelman.

I had just begun reading the french version - but my English is much better than my French ...

Very nice story Curator !
Although I must comment that it seemed more lengthy than is typical of your work.
This one almost approached Borodin lengths.. hehe

Yes, I agree. I thought it was great. I kind of blew the chess thing off at first as not very practical. I am now very interested in it. I think now it would be a very impressive presentation. I would like to print out this whole discussion, but, of course, my printer is acting up. Darn little printers' devils!

The story is now here: http://www.surnateum.org/English/surnate......nset.htm
You can read it with the images of the chess set.
It's not that long, at least for European audiences... Some of my object/stories are far longer than that. But they're full shows by themselves. There are venues for many kinds of bizarre magic. What interests me here, is that there's an effect but no trick.