NEMO Amsterdam Open 2011

Apr 2 - 3, 2011
Amsterdam, Netherlands

NEMO, Amsterdam Science Centre

Oosterdok 2, 1011 VX Amsterdam
NEMO Amsterdam Open 2011 website
WCA Delegate
Ron van Bruchem

Ron van Bruchem, Ton Dennenbroek, Wim Berkelmans


Competition is organised to support the International Mathematical Olympiad 2011 in Amsterdam (July 16-24, 2011).

Registration period

Online registration opened and closed .

Registration requirements
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Event Name Best Average Citizen of Solves
3x3x3 Cube Mats Valk 8.69 10.65 Netherlands 8.6911.839.4610.7511.75
2x2x2 Cube Mats Valk 2.44 3.46 Netherlands 4.282.447.382.683.41
4x4x4 Cube Breandan Vallance 38.47 NR 43.69 NR United Kingdom 48.3138.4747.4339.1144.53
5x5x5 Cube Erik Akkersdijk 1:13.65 1:19.75 Netherlands 1:13.651:19.781:27.631:19.411:20.06
3x3x3 Blindfolded Maximilian Neitzel 1:33.22 DNF Germany 1:33.22DNFDNF
3x3x3 Fewest Moves Sébastien Auroux 30 Germany 30
Jacco Krijnen 30 Netherlands 30
3x3x3 One-Handed Mats Valk 17.52 18.36 Netherlands 20.6617.6819.0517.5218.34
3x3x3 With Feet Erik Akkersdijk 1:09.72 1:22.83 Netherlands 1:22.551:09.721:36.21
Megaminx Erik Akkersdijk 1:05.33 1:15.03 Netherlands 1:14.431:16.331:14.461:05.331:16.19
Pyraminx Niklas Spies 3.91 5.90 Germany 7.436.445.593.915.68
Square-1 Guus de Wit 17.61 22.88 Netherlands 23.9721.4423.2217.6124.84
Magic Quentin Lefebvre 1.08 1.16 France 1.083.441.181.111.18
Master Magic Quentin Lefebvre 2.40 2.73 France 2.40DNF2.752.652.80

Time limit

If you reach the time limit during your solve, the judge will stop you and your result will be DNF (see Regulation A1a4).


The format describes how to determine the ranking of competitors based on their results. The list of allowed formats per event is described in Regulation 9b. See Regulation 9f for a description of each format.