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# Previous Puzzles of the Month + Solutions

January-February 2009, Puzzle nr 120
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Puzzle # 120 Difficulty level: , general math knowledge.

 Geometric mouse   Help Thymoty the small mouse to cut the 3-centimeter thick piece of cheese depicted above into 4 CONGRUENT pieces, so that they can pass through the 5x5-centimeter mouse hole (don’t mind the thickness of the wall). Keywords: geometric dissections. Related puzzles: - Squared! - Red Monad. - Il topo geometrico Aiuta Timoteo il topolino a tagliare la forma di formaggio illustrata qui sopra in 4 pezzi IDENTICI, così che possa introdurla nella sua tana. Il buco della tana misura approssimativamente 5 x 5 centimetri; non bisogna prendere in considerazione lo spessore della parete! Parole chiave: ritagli geometrici, equiscomponibili. Suggerisci un'altra soluzione Chiudi - La souris géomètre Aide Thymotée, la souris, à découper le morceau de fromage ci-dessous en 4 pièces égales, de sorte que celles-ci puissent passer à travers le trou de souris qui mesure approximativement 5 x 5 centimètres, sans avoir besoin de tenir compte de l’épaisseur du mur. Mots clés: découpes géométriques. Propose une autre solution Fermer Source of the puzzle: BrainTrainer, issue #12. © G. Sarcone. You cannot reproduce any part of this page without prior written permission.

 There are several solutions to this dissection puzzle, the one shown below is perhaps the simplest and most elegant. And here is a variant by G. S. Amaresh:   The Winner of the Puzzle of the Month is: Amaresh G. S., India Congratulations! © 2005 G. Sarcone, www.archimedes-lab.org You can re-use content from Archimedes’ Lab on the ONLY condition that you provide credit to the authors (© G. Sarcone and/or M.-J. Waeber) and a link back to our site. You CANNOT reproduce the content of this page for commercial purposes. You're encouraged to expand and/or improve this article. Send your comments, feedback or suggestions to Gianni A. Sarcone. Thanks!

 More Math Facts behind the puzzle The math puzzle above is inspired from a very old puzzle called the "four knights problem". The puzzle's challenge is to cut the chessboard shown opposite into 4 congruent parts, each with a knight on it. Source: "The Moscow Puzzles" by Boris A. Kordemsky.

Previous puzzles of the month...
 Sept-Oct 08: perpendicular or not... July-Aug 08: ratio of triangles May-June 08: geometry of the bees Febr-March 08: parrot sequence... Dec 07-Jan 08: probable birthdates? Oct-Nov 2007: infinite beetle path Aug-Sept 07: indecisive triangle June-July 07: Achtung Minen! April-May 07: soccer balls Febr-March 07: prof Gibbus' angle Jan 07: triangles to square Aug-Sept 2006: balance problem June-July 06: squared strip Apr-May 06: intriguing probabilities Febr-March 06: cows & chickens Dec 05-Jan 06: red monad Sept-Oct 2005: magic star July-Aug 05: cheese! May 05: stairs to square Febr 05: same pieces Sept-Oct 2004: odd triangles June 04: pizza's pitfalls Puzzle Archive More Puzzles

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