Solitaire Chess Puzzle Generator

Goal: Generate 'hard' puzzles.

Install

• Install Rust from here.
• Run cargo install --git https://github.com/cool-mist/sol_chess to install the tool.
• This installs 2 binaries: sol_chess and sol_cli.

Usage

• Run sol_chess to start a windowed GUI game.
• Run sol_cli to start the CLI tool.

CLI Usage

• Generate a puzzle

$ sol_cli -g -n 6
Generating a puzzle with 6 pieces with a maximum of 5 solutions
                Total attempts:     7
           Total pieces placed:    71
         Success pieces placed:    42
               Total time (ms):    69

               ♘  .  .  .

               ♙  .  ♖  .

               ♔  .  ♘  ♙

               .  .  .  .


          id: 202859896274992

• Solve a puzzle by ID, or by board string

$ sol_cli --solve 202859896274992
$ sol_cli --solve-board N...P.R.K.NP....

               ♘  .  .  .

               ♙  .  ♖  .

               ♔  .  ♘  ♙

               .  .  .  .


          id: 202859896274992

Found 3 solutions
1. RxNc2
2. RxPd2
3. RxKa2
4. RxPa3
5. RxNa4

Heuristics of current algorithm

1. About 6-7 pieces on the board.
2. Select pieces to place based on its weight. 3. Eg: Queen is too powerful, so it has lower weightage. 4. Eg: Knights are confusing. More knights.