Riddle time!

An easy one to go with the Christmas celebrations and to kill the digestive time under the festively decorated needle tree: What’s the x standing for?   The answer to last month’s riddle: who killed the scientist?  Gabi and Felice, obviously, if you know your periodic table of elements: 31 => (Ga)llium; 83 => (Bi)smuth; 26 => (Fe)rrum; […]

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Riddle time!

A famous scientist was found murdered in her lab in the chemistry department! Before she died, she was able to smeer a few numbers with her blood on the wall: Scotland yard believes this might be a clue to find her murderer(s)!  Strong suspects are some of her colleagues who were unable to provide an […]

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Riddle time!

In need of a break? Try this for a bit of a change: Ever played the game Tetris? There’s the possibility to completely clear the board after the first five pieces are placed in a block that’s 10 x 2 squares wide/high. Can you figure out how many different arrangements of Tetris pieces there are […]

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