Date Record Championship
1993-08-07900 digitsWorld Memory Championship 1993
1994-08-061080 digitsWorld Memory Championship 1994
1995-08-051140 digitsWorld Memory Championship 1995
1996-08-031392 digitsWorld Memory Championship 1996
1997-08-221512 digitsWorld Memory Championship 1997
1999-08-261328 digitsWorld Memory Championship 1999
2000-08-211780 digitsWorld Memory Championship 2000
2001-08-251580 digitsWorld Memory Championship 2001
2002-08-241784 digitsWorld Memory Championship 2002
2003-10-031358 digitsWorld Memory Championship 2003
2017-12-061152 digitsWorld Memory Championships 2017 (WMSC) (n)
2018-12-201010 digitsWorld Memory Championships 2018 (WMSC) (n)