what does 15/ 10 mean?

15 Minuten für das ganze Spiel plus zehn Sekunden pro Zug.

What is the point of this rule?  

Fifteen minutes time to start with. Every time you make a move, you gain ten extra seconds.

The point is to give you time to checkmate and think in the endgame I believe, in case time is running low. Then it does not become a test of mouse speed and accurate premoves but endgame skill. 

And as long as you can play a move every 10 seconds, you can never lose on time.

IOW, if you can speed up, we won't hold you to the 15 minute time limit?

It's a win-win!

15 minutes to start with for each side. After each move is made, 10 seconds is added on to the clocks

Hallo! Ich kann ein bisschen Deutsch sprechen. 15 Minuten zu Beginn für jede Seite. Nach jedem Zug werden den Uhren 10 Sekunden hinzugefügt

10 Sekunden hinzugefügt  Ja Ja, naturlich!

@T1RP1TZ

That is there so you have time to notate I would think?

I don't like it because it encourages negative and bad play. I don't play any increment above 5 seconds because people can still lose on time with 5 secs increments. There's not much point in playing fast chess with a clock and a 10 second increment.

Thank you!

In my first 15-10 game my opponent was down to 1:34 and then his time seemed to be increased by much more than 10 seconds per move. Was my perception faulty or is there more to this rule?

I wonder if neuroscientists have explored the perception of time using increment chess. Are records kept of the timing of each move and each added time?

IOW, can I go back over that drawn 15-10 time and revisit the time flow? Has this aspect of the topic been explored here or elsewhere? What hath Bobby Fisher wrought?