From January 2021 many browsers will no longer support Flash technology and some games such as Spark Chess may not work.
Solutions are being studied to allow Flash games being playable again on browser. If your game doesn't work you can try one of the similar games on this page.
Spark ChessAuthor : - 39 504 plays
Practice playing chess and put your strategies to the test in Spark Chess. Beginners, amateurs and experienced players alike can all find a suitable opponent by selecting the right difficulty level for them from the 3 on offer. Beat Boris to unlock a 4th difficulty setting, which is extremely challenging, even for the most hardened players.