As an exception, here and today you will not only receive one surf tip, but 31 in total.

Under the link https://www.kamogo.com, an obviously technically adept joker has put together a variety of entertaining tools that are mostly useless, but still promise fun or at least an aha experience when used.

You get the individual tools by adding a number from 1 to 31 after the URL.

An “Australian notepad” can be found at https://www.kamogo.com/28.

When you write in the text field, the letters appear upside down - literally "down under".

The license plate generator is also nice at https://www.kamogo.com/29, here the tool suggests letter combinations that consist of very similar-looking letters and are therefore extremely difficult for passers-by to remember - could help if you plan to do forbidden things with your car.

The "Horizontifier" under number 30 is even reasonably useful: Here you can insert a YouTube link and then watch the video rotated by 90 degrees.

This helps to view incorrectly adjusted videos without having to rotate the player.

The "URL Longener" (number 17), which represents the alternative to a URL shortening tool, is downright absurd.

Enter a URL, for example www.faz.net - and you will then receive an unbelievably long URL, enriched with numerous additional elements, which surprisingly still works.

Have fun!

Now our question:

If you delete two letters from "Kamogo" you get the name of a Japanese river.

Please send this name as a solution proposal to netzraetsel@faz.de.

The closing date for entries is May 18, 2022, 9 p.m.

The solution to last week's riddle was "enharmonic confusion", the winner will be notified in writing.