Paul Morphy Chess Rating by Age. I wonder why his rating dropped

Has Paul Morphy ever lost a chess match? - Quora

Every Chess 'Player Of The Decade' (From Morphy To Magnus)

Morphy number - Wikipedia

Paul Morphy: how good was he really?

Norway Chess on X: GM Alisher Suleymenov played a Paul Morphy level game yesterday against World #1 Magnus Carlsen in Round 2 of the #QatarMasters2023, who suffered his worst loss in rating

Monthly Lists: 1855 - 1865

Liah: Chess Tactics — Her Move Next

How did Morphy and Alekhine get so good at chess? – Daily Chess Musings

Chess: Would Paul Morphy in his short prime be competitive with the Grandmasters of today? - Quora

Paul Morphy and the Evolution of Chess Theory (Dover Chess)