Puzzle Walkthrough | Checkmate Walkthrough 1-100 Cool Math Games @adgardGame | Uploaded 2 months ago | Updated 3 days ago
These are common chess problems. The only thing is that the playing field is usually reduced to a small rectangular area. I passed, the first 100 levels are easy levels. I like chess problems, but there are too many here. Maybe I'll go through some more later.
https://www.coolmathgames.com/0-checkmate