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README.md
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---
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license:
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---
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license: mit
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tags:
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- chess
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- puzzle
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size_categories:
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- 100K<n<1M
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---
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Solutions to all [Hippodrome chess puzzles](https://www.chessvariants.org/solitaire.dir/hippodrome.html).
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Hippodrome is a type of chess puzzle in which the player has to move 4 knights from the bottom row to the top row (or some designated spots) in a 4x4 grid. Solutions is generated using A* search algorithm.
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Note that since there are only 1 empty spot, and no captures allowed, this essentially means that queens function effectively as kings.
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Detailed Statistics:
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- Total number of puzzle configurations: 415800
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- Total number of unsolvable configurations: 2730
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- Shortest solution: 21 moves
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- Longest solution: 38 moves
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- Average moves: 26.6 moves
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- Median moves: 27 moves
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