Jan van Koningsveld

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Jan van Koningsveld (born 1969 in Emden) is a mental calculator. He was second at the Mental Calculation World Cups of 2004 and 2006.

Other Mental calculators

Willem Bouman (Netherlands)
Andrew Robertshaw (Great Britain)
Silke Betten (Germany)
Valentin Barraud (France)
Tina Bauer (Germany)
Robin Wersig (Germany)
Krishna Athith (India)
Vanishree Padmakali (India)
Divesh Ramanlal Shah (India)
Mohammed Seghir Said (Algeria)
Mohammed Seghir Sofiane (Algeria)
Matthias Kesselschläger (Germany)
Hakim Mohellebi (Algeria)
Elias Zakaria Mohellebi (Algeria)
Francisco Javier Mañana Rodriguez (Spain)
Veena Subramanian (India)
Vinay Bharadwaj (India)
Alexander Drygalla (Germany)
Issam Khneisser (Libanon)
Ali Bayat Movahhed (Iran)
Teimuraz Ghambashidze (Georgia)
Melik Duyar (Turkey)
Rüdiger Gamm (Germany)
Alberto Coto (Spain)
Salvador Bisshop Flores (Spain)
Jorge Arturo Mendoza Huertas (Peru)
Chintapalli David Raju (India)
Kenneth Wilshire (Great Britain)
Stefan Lehmann (Germany)
Robert Fountain (Great Britain)
John Louis (India)
Bernett Orlando (India)
Justin Hartley (Australia)
Wouter de Lange (Netherlands)
Freddis Reyes Hernández  (Cuba)
Ben Pridmore (Great Britain)
George Lane (Great Britain)