Alexander Alekhine – undefeated World Chess Champion

Alexander Alekhine was multiple winner of various international tournaments, fourth World Chess Champion, the only world champion who died undefeated

Alexander Alekhine - Wikipedia

Capablanca - Chesstutor Learn how to play chess online

World Champions Timeline

Alexander Alekhine - Wikipedia

Why is Magnus Carlsen hinting at not playing world championships anymore while at the peak of his powers? - Quora

The 10 Best Chess Players Of All Time

Chess Records - CHESS POWER

The 12 Greatest Chess Players of All Time - Chessable Blog

Alexander Alekhine, Russian Chess Legend

1992 Alexander Alekhine undefeated chess champion

World Chess Champion Alexander Alekhine : r/redscarepod