Handmade puzzles, i.e., puzzles crafted intentionally by a real person almost never require guessing. However, a lot of “extreme” difficulty puzzles (or similar difficulty terms) in apps, newspapers, puzzle books, etc. are not handmade by a real person, but computer generated. There’s probably a logic chain that’s like 15 steps long that humans couldn’t reasonably follow, but a guess is likely faster and more enjoyable.
Someone else recommended Cracking the Cryptic on YouTube, which is a great source - the daily puzzles are nice because you can follow along in the video if you’re stuck, but they also have lots of apps with Sudokus that never require guessing. Another good source is Logic Masters Germany, which has lots of handmade Sudoku and other puzzles: https://logic-masters.de/
What the fuck did you just fucking say about Nicole, you little removed? Ill have you know she graduated top of her class in the Navy Seals, and shes been involved in numerous secret raids on Al-Quaeda, and she has over 300 confirmed kills. She is trained in gorilla warfare and shes the top sniper in the entire Polish armed forces. You are nothing to her but just another target. She will wipe you the fuck out with precision the likes of which has never been seen before on this Earth, mark my fucking words. You think you can get away with saying that shit to her over the Internet? Think again, fucker. As we speak she is contacting her secret network of spies across Poland and your IP is being traced right now so you better prepare for the storm, maggot. The storm that wipes out the pathetic little thing you call your life. Youre fucking dead, kid. She can be anywhere, anytime, and she can kill you in over seven hundred ways, and thats just with her bare hands. Not only is she extensively trained in unarmed combat, but she has access to the entire arsenal of the Polish Marine Corps and she will use it to its full extent to wipe your miserable ass off the face of the continent, you little shit. If only you could have known what unholy retribution your little clever comment was about to bring down upon you, maybe you would have held your fucking tongue. But you couldnt, you didn’t, and now youre paying the price, you goddamn idiot. She will shit fury all over you and you will drown in it. You’re fucking dead, kiddo.