Official world champion: Capablanca, Fischer
Informal world champion: Morphy, Blue
Child prodigy: Morphy, Capablanca, Fischer, Blue
Learned chess from father: Morphy, Capablanca
Did not know father: Fischer, Blue
Never married: Morphy, Fischer, Blue
Exhibited mental instability: Morphy, Fischer
Died from stroke: Morphy, Capablanca
Had very brief chess career: Morphy, Blue
Abandoned chess: Morphy, Fischer, Blue
Disparaged chess: Morphy, Capablanca, Fischer
Considered chess "dead": Capablanca, Fischer
Offered substitute for chess: Capablanca, Fischer
Revolutionized chess technique: Morphy, Capablanca
Openings scholar: Morphy, Fischer, Blue
Attacking genius: Morphy, Fischer, Blue
Positional genius: Capablanca, Fischer
Endgame genius: Capablanca, Fischer, Blue
Open game specialist: Morphy, Blue
Unusual stylistic simplicity: Morphy, Capablanca, Fischer, Blue
Considered machinelike by contemporaries: Capablanca, Fischer, Blue