When a player's main time is used up, there is a time limit to play
several stones.
Example: 10 stones within 15 days:
If the player has submitted the 10th stone within time, then the countdown starts again (with 15 days for the next 10 stones).
If the player does not move in time, the game is lost.
Time limit format for Canadian byo-yomi (for example "C: 14d + 7d / 5"):
"C: M" : M=main-time, Absolute time (without byo-yomi)
"C: M + B / P" : M=main-time, B=Byo-yomi-time, P=Byo-yomi-stones
Time remaining format for Canadian byo-yomi:
"C: m (-)" : m main-time left (absolute time, no extra-time)
"C: m (+ B / P)" : m main-time left + extra-time (B time per P stones)
"C: b / p (B / P)" : in byo-yomi (no '+'), b byo-yomi-time left for p stones to play (extra-time is B time per P stones)
