Nature Chemistry | The Sceptical Chymist
Su Doku goes periodic
Su Doku, the number game that is sweeping the world, has been adapted by the Royal Society of Chemistry into a puzzle where each square must have only one of nine elements listed at the bottom of the page. The play is exactly the same as the digit version, except that one contemplates the likes of lanthanum and cerium while one plays. Check it out at www.rsc.org/puzzle.
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