Gawd. I wanted to write a story about Alexander Alekhine's cat once because I liked the idea of the cat being somehow the real world champion of #chess instead of the boozy, unpleasant Alekhine. There he is at the 1935 world championship which I wished to make into the setting for the story; I even started to research the match though I found no better account of it than the abbreviated treatment (but a helpful one) from Garry Kasparov's My Predecessors.
That's Max Euwe, the spectacled fellow, sitting at right on the Black side of the board, while the cat (who might be a Siamese, I'm not sure) sitting with front paws on the board and a harness round them. Alekhine stands at left, with his right hand petting the cat, whom some sources give the name of Chess or more likely Caissa. I think Hans Kmoch might be the background figure closest to Alekhine, the fellow with thin hair and round spectacles.