12MinsTo9 – simple maths and sliding tiles

A completed game of 12MinsTo9 where the maximum achieved was 512

A very simple game that’s been around for about a decade is 2048, a sliding tile game in which the goal is to slide all of the numbered tiles in one of four directions, in order to cause collisions between two tiles bearing the same number, at which point they combine to become the total of the two.

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Mathematics in BBC BASIC on RISC OS

Introduction “Essential Maths” was a book covering the programming of mathematics concepts like Trigonometry. The book was published thirty five years ago for owners of the BBC and Electron computers – remember those? The writer, Czes Kosniowski, wouldn’t be surprised to know that the principles are as relevant today as they were when he wrote it. Did you know for instance that in a ‘prime sequence’ the only even number is two?

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