What does the †† notation mean? - Chess Stack Exchange

I am reading a book on chess openings called 51 Chess Openings for Beginners by Bruce Albertson and the author uses notation like so: †† Kxf7 What does the †† mean? I know a single † m

Tool used to create chess analysis interactive diagrams in many chess stack exchange answers - Chess Meta Stack Exchange

Is chessdotcom's engine broken? Why does it want me to win a pawn instead of the Queen? : r/chessbeginners

python - Exporting Chess moves and images into HTML or CSV format - Stack Overflow

time control - What do these game durations mean? - Chess Stack Exchange

chess - Swapping rooks in a 4x4 board - Puzzling Stack Exchange

The History of Chess in Fifty Moves by Bill Price (2015, Hardcover) for sale online

analysis - Do Grandmasters think using algebraic notation? - Chess Stack Exchange

2023 Best move in algebraic chess notation chess visit

software - Visualizing the number of pieces attacking each square - Chess Stack Exchange

The Chess Advantage in Black and White: by Kaufman, Larry

1950's Soviet Latvian Reproduced Chess Pieces Only in - Israel

problems - Why is the queen considered lost? - Chess Stack Exchange