Denkecken...
A 1-page recreational math article for the sci-tech magazine "ZeitWissen".

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Summer game supplements
A 3-page perception puzzle column for the science magazine "Focus", Italy.

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... and for the science magazine "Focus", Greece.

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Optical illusion gallery
15 pages of optical illusions for the popular science magazine online "Scientific American".

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Stuzzicamente
A 3-page puzzle column for the tech magazine "Il Mio Computer".

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Avianca Journal
A 3-page puzzle column for the "Avianca Airlines" magazine.

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Quest Puzzles
A 4-page optical illusion column for the Dutch magazine "Quest Braintainment".

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R.M.T. Certificates
Since 2000, we create and illustrate with puzzles the certificates of participation and appreciation for the Association "Rallye Mathématique Transalpin".

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'Magia' Magazine
A 5-page mathmagic column for the magazine "Magia".

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Math Teaching
A 1-page math puzzle column for the magazine "Math Teaching".

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