Original: The new game appearing in 1879, called the champion's game or limited-rail, is considered an intermediary game between straight rail and balkline and was designed with the specific intent of frustrating the rail nurse.
Simplified: A new game appeared in 1879, called the champion's game or limited-rail. The champion's game is considered an in-between gameâ "between straight rail and balklineâ" and was designed to stop the rail nurse.