Transport puzzle : Transport Puzzle
Transport puzzles are logistical puzzles, hence are puzzles which represent real-life transport problems.Like in shuffling puzzles, no piece is ever lost or added to the board. In contrast to shuffling puzzles, however, in transport puzzles all tokens have to follow certain routes given on the board; they cannot be lifted off the board and placed on faraway positions that have no visible connection to the from-position.
Hence transport puzzles often mean that the player has to move (physical) objects in a very restricted space.
This puzzle class has several subclasses:
- sokoban puzzles
- sliding puzzles
- with Samuel Loyds fifteen puzzle as the most well known example
- train shunting puzzles[?]
- river cross puzzles - see below
A well known example:
A farmer has a boat, a cabbage, a goat and a wolf. He has to cross the river with his boat. His boat is small, so he can take either the cabbage, the goat or the wolf with him - but not two of them at the same time. If he leaves the goat with the cabbage unattended, the goat will eat it. Likewise, he cannot leave the goat with the wolf alone.
How many crossings must the farmer make?
Warning: Wikipedia contains spoilers!
Clearly the farmer first can take the goat only. After subsequently bringing one of the other two, say the cabbage, the clue is to take the goat temporarily back. He then brings the wolf and finally the goat again. Thus there are seven crossings, four forward and three back.
The famous British puzzler Henry Dudeney[?] added several puzzles to this category.
Once again,
Among all visible objects, cannot be,
With a like nature,- by thy vain device
'Twill come to pass they'll laugh aloud, like men,
Or moisten with salty tear-drops cheeks and chins.
THE INFINITY OF THE UNIVERSE
Now learn of what remains! More keenly hear!
How dark it is: But the large hope of praise
On the same hour hath strook into my breast
I wander afield, thriving in sturdy thought,
Trodden by step of none before. I joy.html">joy
To drain them deep; I joy to pluck new flowers,
From regions where the Muses never yet
First, since I teach concerning mighty things,
The tightened coils of dread religion;
Songs so pellucid, touching all throughout
Is not without a reasonable ground:
Young boys the nauseous wormwood, first do.
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