536 Puzzles and Curious Problems

148 Combinatorial & Topological Problems 398. THE CARD PENTAGON Make a rough pentagon on a large sheet of paper. Then throw ...

THE WHEEL PUZZLE Place the numbers 1 to 19 in the 19 circles, so that wherever there are three in a straight line they shall ad ...

150 Combinatorial & Topological Problems a man who goes to a brook with only two vessels with which to measure a given quant ...

Liquid Pouring Puzzles 151 PROHIBITION AGAIN Let us now try to discover the fewest possible manipulations under the same condi ...

152 Combinatorial & Topological Problems DELIVERING THE MILK A milkman one morning was driving to his dairy with two lO-ga ...

Route & Network Puzzles 153 18 (^18) ..... :!l +2- .... a . Where should I start and what route should I take, without l ...

154 Combinatorial & Topological Problems of the three houses, A, B, and C, without any pipe crossing another. Take your penc ...

Route & Network Puzzles 155 the same diagram and asked to start where you like and try to pass through every short line comp ...

156 Combinatorial & Topological Problems 416. SINKING THE FISHING-BOATS ~ ~ ~ ~^0 ~ ~. ~ ~ e ~ ~ ~ 6 e e lJ ~ lJ 17 6 tJ ~ ~ ...

Route & Network Puzzles 157 possible roads are indicated by the lines, and he always walks either due N, due E, or NE; that ...

158 Combinatorial & Topological Problems in a different department. For the purpose of pedestrian exercise he crossed every ...

Route & Network Puzzles 159 A MONMOUTH TOMBSTONE E I K E R II H o ;] S ~ Ol/tlll E " I E I Ii £ R II H o ;] S £ S :T o H I ...

160 Combinatorial & Topological Problems INSPECTING THE ROADS A man starting from the town A, has to inspect all the roads ...

Route & Network Puzzles 161 This is a very simple proposition, but practically impossible to solve until you have hit on som ...

162 Combinatorial & Topological Problems the reverse way of a route as different. There is a tunnel between Nand 0, and anot ...

Route & Network Puzzles 163 from C to C, from D to D, from E to E, respectively, without one ever cross- ing the track or go ...

164 Combinatorial & Topological Problems THE ENCIRCLED TRIANGLES Here is a little puzzle that will re- quire some patience ...

Point Alignment Puzzles 165 A HOPSCOTCH PUZZLE We saw some boys playing the ancient and ever popular game of hopscotch, and we ...

166 Combinatorial & Topological Problems appear to be somewhat out of the game, as the only purpose it serves is to complete ...

Point Alignment Puzzles 167 is to remove only three of these pegs to different holes, so that the ten shall form five rows with ...