Challenge Description: I love playing this map but recently I noticed that some of the circles seem off. Can you help me find the locations of the weird circles?
Solving Process: After downloading the provided ZIP file, it appears to contain a beatmap folder that can be used in osu! itself (I don’t play, so please excuse any incorrect terminology used), so I spent a lot of time messing around with the in-game editor in osu! to see if there was something further to glean.
After reaching out for a little help, the process to solve this was much easier than I thought. We can observe from the screenshot below that one of the files provided has a different modification date compared to the others.
We can check the difference of the modified file and another, untouched file
After spending time investigating modifying beatmap files, I partially understood what we were looking at. These lines appeared to be the hit object syntax which follows as: x coordinate, y coordinate, time, type, hitSound, objectParams, hitSample (thanks to this wiki explaining in depth ), which is cool and all, though not super important. The first four values of each line appear as integers, perhaps representing another value? ASCII always seems popular
Flag: osu{BTMC_15_mY_G0aT}