Connect-four

This is a WIP (a will likely stay ASIS), the goal was to understand better minimax and optimisation algorithms for another project.

I followed this great article most of the time: http://blog.gamesolver.org/.

Entry points

cargo run # play connect four

• I let the IA play next move
• ←/→ move cursor
• ↓/⏎ drop a piece

cargo run --bin benchmark

Benchmarks the solver.