is colored either red or blue. One player (usually the first, or left, player) is only allowed to cut blue line segments, while the other player (usually the second, or right, player) is only allowed to cut red line segments.
*Blue-Red-Green Hackenbush: Each line segment is colored red, blue, or green. The rules are the same as for Blue-Red Hackenbush, with the additional stipulation that green line segments can be cut by either player.

Blue-Red Hackenbush is merely a special case of Blue-Red-Green Hackenbush, but