main.go

package main

import (
	"fmt"
	"math/rand"
	"time"
)

func main() {
	var board Board
	turn, side := 1, White

	seed := time.Now().UnixNano()
	fmt.Printf("Random number seed is %d\n", seed)
	rand.Seed(seed)

	board.Init()

	for {
		var line string

		fmt.Printf("\nPrior to Turn #%d (%s's move):\n\n", turn, side.Color())
		board.Show()
		fmt.Println()
		incheck := board.isCheck(side)
		if incheck {
			fmt.Println("Oh god help me, I'm in CHECK!")
		}

		var chosenmove Move
		var stalemate bool

		if side == White {
			moves := board.CandidateMoves(side)
			moves.Show("Candidate Moves for " + side.Color() + ": ")
			moves = moves.PruneForCheck(&board, side)
			moves.Show("Pruned Candidate Moves for " + side.Color() + ": ")

			if len(moves) == 0 {
				fmt.Println(side.Color() + " has no moves remaining, STALEMATE!")
				break
			}

			chosenmove = moves.ChooseRandom(side)
		} else { // Black's move
			//chosenmove = moves.ChooseNoDepth(side)
			chosenmove, stalemate = board.ChooseBestWithDepth(side, 2, incheck)
			if stalemate {
				fmt.Println(side.Color() + " has no moves remaining, STALEMATE!")
				break
			}
		}

		fmt.Println("Chosen move: " + chosenmove.Name())
		board.Apply(chosenmove)
		fmt.Printf("\nAfter Turn #%d (%s's move):\n\n", turn, side.Color())
		board.ShowMarked(chosenmove.getTo())
		if board.isCheckMate(*(side.Other())) {
			fmt.Println(side.Other().Color() + " is in CHECKMATE!")
			break
		}

		side ^= ColorMask
		turn++

		fmt.Scanln(&line)
	}
}