Shades of Blunders
lichess.org
lichess.org
I.e. people who are familiar with the rules but don’t play well and don’t understand the notation; I liked this text but it was difficult for me to follow and I didn’t understand many examples (e.g. I can’t spot a checkmate in one, I wish the article pointed it out).
As for the mate in 1, it's in the analysis next to the game board (you'll need to learn notation to read it).
Don't bother with that large table at the bottom.
Look for that in the UI
If you have a physical chessboard it can also help to try to play out a game from it’s notation and stop every few moves to check your board’s state against the state of the actual game.
I spent a couple of afternoons doing this and it stuck. You can refresh with some Chess Vision training[1] from Chess.com.
If you are interested in learning or reading more about chess, it is worth learning Portable Game Notation[2] (PGN). If you’re interested from a more programmatic perspective the Forsyth–Edwards Notation[3] (FEN) is more common in software, and there’s also the Universal Chess Interface[4] (UCI) format that is mostly used for communicating with engines.
[0]: https://lichess.org/study/ezdKJ7Di/9NLD1jo2
[1]: https://www.chess.com/vision
[2]: https://en.m.wikipedia.org/wiki/Portable_Game_Notation
[3]: https://en.m.wikipedia.org/wiki/Forsyth%E2%80%93Edwards_Nota...
[4]: https://en.m.wikipedia.org/wiki/Universal_Chess_Interface