💡📝Azlan Iqbal wrote on Tue, Apr 7, 2015 08:41 PM EDT:
Dear Kood,
Thanks for the question. It means that if you have 5 minutes on your clock and if the opponent has 7 minutes, then upon switching, you not only get your opponent's pieces but also his time of 7 minutes; and he gets your time of 5 minutes.
To prevent rare cases of abuse such as switching and then waiting until the time is almost exhausted before quickly switching again, SSCC can be played under a "fixed time per move" rule such as 3 minutes per move or 5 minutes per move, in which case the time left need not be exchanged upon switching. It just resets at every move for each player.