87 lines
1.6 KiB
Markdown
87 lines
1.6 KiB
Markdown
# Solitaire Chess Puzzle Generator
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Goal: Generate 'hard' puzzles.
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## Install
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- Install Rust from [here](https://www.rust-lang.org/tools/install).
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- Run `cargo install --git https://github.com/cool-mist/sol_chess` to install the tool.
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- Run `sol_chess --help` to see the options.
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## Usage
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- Generate a puzzle
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```bash
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$ sol_chess -g -n 6
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Generating a puzzle with 6 pieces with a maximum of 5 solutions
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Total attempts: 7
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Total pieces placed: 71
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Success pieces placed: 42
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Total time (ms): 69
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♘ . . .
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♙ . ♖ .
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♔ . ♘ ♙
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. . . .
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```
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- Solve a puzzle
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```bash
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$ sol_chess -- --solve N...P.R.K.NP....
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♘ . . .
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♙ . ♖ .
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♔ . ♘ ♙
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. . . .
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Found 3 solutions
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1. Rc3 -> a3
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2. Ra3 -> a4
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3. Ra4 -> a2
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4. Ra2 -> c2
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5. Rc2 -> d2
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```
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- Generate and solve a puzzle
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```bash
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$ sol_chess -g -n 6 --print
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Generating a puzzle with 6 pieces with a maximum of 5 solutions
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Total attempts: 4
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Total pieces placed: 34
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Success pieces placed: 24
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Total time (ms): 38
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. . ♙ .
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♕ . . ♘
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. . . .
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♗ ♖ . ♘
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Found 5 solutions
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1. Rb1 -> a1
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2. Ra1 -> d1
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3. Rd1 -> d3
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4. Qa3 -> d3
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5. Qd3 -> c4
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```
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## Heuristics of current algorithm
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1. About 6-7 pieces on the board.
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2. Select pieces to place based on its weight.
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3. Eg: Queen is too powerful, so it has lower weightage.
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4. Eg: Knights are confusing. More knights.
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