package main

import "golang.org/x/tour/pic"

func Pic(dx, dy int) [][]uint8 {
    board := [][]uint8{}
    for y := 0; y < dy; y++ {
        board = append(board, []uint8{})
        for x := 0; x < dy; x++ {
            board[y] = append(board[y], uint8(x+y))
        }
    }
    return board
}

func main() {
    pic.Show(Pic)
}