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| | MODEL RAILWAY SHUNTING PUZZLES |
 | | a perplexing question, particularly a mechanical toy or other device involving some constructional problem, to be solved by the exercise of patience or ingenuity. |
 | | Puzzles come in many forms and styles, such as riddles, mazes, jigsaws, blocks, rings, wires, and lots more. |
 | | Some of the oldest "mechanical" puzzles come from China (perhaps the most familiar being the ch'i ch'iao t'u or Tangram - play an on-line version |
| www.wymann.info /ShuntingPuzzles/shunting-puzzles-theory.html (979 words) |
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