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World Amateur Poker

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MSO Mental Calculations Tournaments

World Championship
20th August 201410:00
£ 10 / £ 5
Click to enter
19th August 201420:00
£ 10 / £ 5
Click to enter
Home >  Games >  Number Games >  Mental Calculations

Mental Calculations

Categories:  Puzzle Games Traditional Games

Whether you need to know what day of the week 15 - 08 - 2745 is or the 7th root of 11 the mental calcultaions experts can find the answer with no workings and no paper. This is potentially the most demanding single session in the timetable. It is likely to take at least 100% to win the Mental Calculations World Championships.


Mental calculation rules are those of standard maths test except that you are only allowed to write down the answer. No calculation devices (including phones, or watchs with calculator functions) are permitted in the playing area. It is an event that is run under standard examination conditions that there is no talking and you must be escorted to the toilet. If you leave the room (without an official esscort) you will not be allowed back in. The paper does have a small element of English but this should not disadvantage foreign competitors.

You can find out about opportunities to play Mental Calculations live at the timetable. Please report any external links that have broken or have changed to contain inappropriate material. More information about how tournament play works can be found in clocks and in MSO rules.

MSO Mental Calculations Champions

2012 Gert Mittring Germany World Champion
2010 Gert Mittring Germany World Champion
2009 Gert Mittring Germany World Champion
2008 George Lane England World Champion
2008 Gert Mittring Germany World Champion
2007 Gert Mittring Germany World Champion
2006 Gert Mittring Germany World Champion
2005 Gert Mittring Germany World Champion
2004 Gert Mittring Germany World Champion
2003 George Lane England World Champion
2002 George Lane England World Champion
2001 John Rickard England World Champion
2000 Robert Fountain Wales World Champion
1999 George Lane England World Champion
1998 Robert Fountain Wales World Champion
1997 K. Galle USA Olympiad Champion

Full results and other winners can be found in Results.

MSO Mental Calculations Ranked Players:


  George Lane, Gert Mittring, Robert Fountain


  Andrew Robertshaw


  Jan Haugland, Andrew Robertshaw

External Links