The Shoelace Problem & Other PuzzlesProblem solving is a pleasure - when you can get rid of those mental blocks. That's just what this collection of puzzles helps you do, even as it offers hours of entertainment. There's advice on working through the tough spots and exercising those creative mental muscles. Start with a classic about The Man with No Eyes. He's gone to the woods to view the skies. He sees a tree with apples on it: he takes none off, yet leaves none on. How can this be? Or try the numerical St. Ives Riddle, from a rhyme first published in 1202. Decipher mystery signs, make symmetry folds, and do the Twenty-Five Point Connect. |
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17th triangular number alien ALL-SQUARE MATCH anagram grid angles ANSWER arrow ARTY-CRAFTY blue cell Clever Hans CLOWN AND COMPANY Company 1's complete triangles connect convex pentagon convex quadrilateral create creative diameter dots EVERYTHING'S EQUAL eyelets floors fold 3rd fold geometric graph HAPPY END PROBLEM HERE'S THE PLAN hexagon hiker isometric drawing IVES RIDDLE lacing LITTLE PROBLEMS LOCAL AREA NETWORK look Mastermind Collection mathematicians mathematics Maximum solutions minutes move MYSTERY SIGNS natural numbers number of chairs number of intersections number of lines object odd number ORTHOGRAPHIC DRAWINGS orthographic projections PAPER VIEW pencil Piet Hein PLANT PLOT player points polygon Projective geometry Pythagorean theorem Recreational mathematics red counters RETURN JOURNEYS Rhind Papyrus Rhombus rungs to number sequence shapes shoe SHOELACE PROBLEM side smallest number Sol LeWitt solve SQUARE DIVISION straight lines TESSELLATION three-dimensional trace TRACK AND TRACE two-digit number VERTEX COLORING vertices