Assertion: polo's rule | /r/HasProperty | tested in a 1954 two-on-two game
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text: The first rules were tested in a 1954 two-on-two game and Alan Blake made the following announcement in the November 1954 issue of the British Sub-Aqua Club's then-official magazine Neptune: "Our indoor training programme is getting under way, including wet activities other than in baths, and our new underwater game 'Octopush'.