Move Notation and Evaluation

When a move is played, it is shown in a specific move notation. Each move has an evaluation by Chess.com's computer, Stockfish 15.

Evaluation:

When Stockfish gives an evaluation, that evaluation is generally bordered with a color to make the evaluation score easier to understand. If the number features a "+", this means white has an advantage. If, instead, there is a "-", this means black has an advantage. If the evaluation is 0.00, this means the position is either fully equalized or a draw with engine-level play. The greater the number following the symbol (if one is present), the better the advantage for that side. If the evaluation is a really high number, this means the computer has found a way to force a position that leads to checkmate, although it cannot find a forced checkmate. If it does, "M" is shown as the evaluation, followed by the number of moves minimally required to achieve checkmate. 1-0 respresents a win for white, and 0-1 represents a win for black.

Move Notation:

This one is more complicated than evaluation. A series of letters and numbers (many of which onluy appear under certain conditions) marks what move was played specifically.

The first part of the notation is a capitalized letter. This shows the piece that was moved (K for king, Q for queen, R for rook, B for bishop, N for knight, and no letter for pawn). If the move was a capture by a pawn, the file the pawn was on is used as a placeholder for this letter.

The second part of the notation is a lowercase letter. It only appears when two of the same type of piece can move to a defined square, and are not on the same file. This shows the file that the piece was moved from (a through h).

The third part of the notation is a number. It only appears when two pieces of the same type can move to a defined square, but are on the same file. This shows the rank that the piece was moved from (1 through 8).

The fourth part of the notation is "x". This only appears when the move played is a capture.

The fifth part of the notation is a lowercase letter. This shows the file that the defined piece was moved to.

The sixth part of the notation is a number. This shows the rank the defined piece was moved to. Combining the rank and file will pinpoint an exact square on the board.

The seventh part of the notation is the symbol "=" followed by a capitalized letter. This only appears if the move played results in a promotion. The letter that appears is based on the player's promotion choice (Q for queen, R for rook, B for bishop, and N for knight). 

The eighth and final part of the notation is one of two symbols (+ or #). This only appears if the move played places the opposing king in check (moves that place yourself in check are illegal). If the symbol is "+", the king has a method of escaping check. If the symbol is "#", the king has no way of escaping check, also known as checkmate. The game is over, and the side that played the move wins.

You spent months writing that.

I've made longer topics that have taken me two to three hours to type. One example is my topic on the Variants pieces and how they move. It's basically a Wikipedia page by itself.