IIRC, in competition sometimes they use a clock and a move must be made before the alarm sounds.
Maybe 5:5 means "check"?
ph
What’s a chess clock and how do they work? A:A chess clock is actually two clocks! When you’re thinking, your clock ticks down. After making a move, you hit a button at the top of the clock and your opponent’s clock starts ticking. If you run out of time, you lose the game, unless there is checkmate on the board or your opponent has insufficient mating material. There are two main types, the digital and analog clock. that is taken from the faq page on uscf website
Remember the picture of DJT with note in hand, thought 5:5 meant “I hear you!”
It means a game where you get 5 minutes and 5 seconds to move I believe.
Not a chess player. However, that makes me reconsider the Red Castle and Green Castle thing so I did a search:
Strateg - See also: Chess opening
Castling is an important goal in the opening, because it serves two valuable purposes: it moves the king into a safer position away from the center of the board, and it moves the rook to a more active position in the center of the board (it is even possible to checkmate with castling).
The choice as to which side to castle often hinges on an assessment of the trade-off between king safety and activity of the rook.
Maybe the red castle was a sacrifice - signing crappy bill and green - activity planned good to go???