The Games and Puzzles Journal, #7 - Mayhematics

d5"{s*-4)$-rTHE GAMES AND PUZ-,ZLES JOURNALHepttamnndsBv IV.STEAD24 Heptiamonds in6-unit-side hexagonminus hexa-symmetriccentre pieee.(tO August 1966)24 Heptiamonds in6-unit side hexagonminus central star.Assembled from6 'Swordtaill shapeseach of 4 heptiamonds.(t t August 1966)24 Heptiamonds inminus central unit13-unit-side triangletriangle (zg Juty 1966)Geometri.c JtgsowsThere are 18 possible shapes for a Jigsaw piece (assumingthan one bobble or nibble per edge, and parallel straight edges notINTERNAL PIECESt-lj-l Rr&ig 3'5a square body, no m oreallowed) as follows:[,; 5-H^.]rr|i fn-I L-o-lUEDGES VE ?J_, 1-r- a-i u,-r ttCO}I,NERSr--_llrdi_rl:Linked pairs are reversals of each other.r-1 [7-Lo-r L#Some ways of fitting these together are as follows: (a) Omitting the. completelysymmetric pieces, marked )T urrung" the other 16 to form a 4 by 4 square. (b) Omittingtire other Obunty axisymmetric pieie (the "standard" design, marked * ) tne remaininglb will form a 3 by 5 rectangle. (c) Using only the 12 edge and corner pieces' we canform a 2 by 6 rectangle. Solutions will be diagrammed in the next issue'page 116