The creator admits it early on -- it's measuring rarity based on the specific notation everyone uses, which greatly influences the classification of rarity.
Fundamentally all chess moves are a piece moving from one source to another destination including:
- castling as a king move with a distance greater than 1
- pawn moves to the 8th or 1st rank with the additional datum of a new piece
- en passant is the same as a regular pawn capture, it just requires the victim pawn to have moved two squares previously.
Algebraic notation also has an arbitrary and reasonable amount of extraneous detail despite dropping the source location if it's unambiguous.
For example, the captures (x), check(+) and checkmate(#) symbols are all unnecessary given the previous state of the board is always known. With en passant it's also unnecessary to have a special symbol indicating an en passant capture, and indeed there isn't one.
I was initially hoping to get some insight on e.g. which pairs of squares had the fewest moves for a given piece etc.
That being said, I thoroughly enjoyed the video. It was beautifully illustrated and explained everything clearly.
Fundamentally all chess moves are a piece moving from one source to another destination including:
- castling as a king move with a distance greater than 1
- pawn moves to the 8th or 1st rank with the additional datum of a new piece
- en passant is the same as a regular pawn capture, it just requires the victim pawn to have moved two squares previously.
Algebraic notation also has an arbitrary and reasonable amount of extraneous detail despite dropping the source location if it's unambiguous.
For example, the captures (x), check(+) and checkmate(#) symbols are all unnecessary given the previous state of the board is always known. With en passant it's also unnecessary to have a special symbol indicating an en passant capture, and indeed there isn't one.
I was initially hoping to get some insight on e.g. which pairs of squares had the fewest moves for a given piece etc.
That being said, I thoroughly enjoyed the video. It was beautifully illustrated and explained everything clearly.