Was it chess, blackjack or some other game that was first played in space?
“Cosmonaut Andriyan Nikolayev (1929-2004), along with cosmonaut Vitaly Sevastianov, played chess against the ground crew during their Soyuz 9 spaceflight on June 9, 1970.”
From a chessmaniac page on chess in space, which has much more info.
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$\begingroup$ Was there potentially anything before in the first 20 or so spaceflights? $\endgroup$ – Owen Berkov Jan 13 '19 at 5:49
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$\begingroup$ "Velcro chessboard". Now, I'm trying to imagine all board game and card game I know with Velcro on it. $\endgroup$ – Manu H Jul 29 '19 at 14:27