The winner of the game is the player who makes the next to last mistake.
Tartakower

WORLD CHAMPIONS OF CHESS

Name Surname Year of World Championship
Wilhelm Steinitz

1886-1894

Emanuel Lasker

1894-1921

Jose Raul Capablanca

1921-1927

Alexander Alekhine

1927-1935

1937-1946

Max Euwe 1935-1937 
Mikhail Botvinnik 1948-1957 

1958-1960

1961-1963

Vassily Smislov 1957-1958
Mikhail Tal 1960-1961 
Tigran Petrosian 1963-1969 
Boris Spassky 1969-1972 
Robert Fischer

1972-1975

Anatoly Karpov 1975-1985 

1993-1999 (FIDE)

Garry Kasparov 1985-1993 

1993-2000 (ACP)

Alexander Khalifman

1999-2000 (FIDE)

Vladimir Kramnik 2000-2006 (Brain Game, Klasik)  
Viswanathan Anand 2000-2002 (FIDE) 
Ruslan Panamariov 2002-2004 (FIDE) 
Rustam Kasımdzhanov 2004-2005 (FIDE)
Veselin Topalov 2005-2006 (FIDE)
Vladimir Kramnik 2006-2007
Viswanathan Anand 2007-2013
Magnus Carlsen 2013-...