NEMO Amsterdam Open 2011

Apr 2 - 3, 2011
Amsterdam, Netherlands

NEMO, Amsterdam Science Centre

Oosterdok 2, 1011 VX Amsterdam
NEMO Amsterdam Open 2011 website

Ron van Bruchem, Ton Dennenbroek, Wim Berkelmans

Ron van Bruchem, Ton Dennenbroek, and Wim Berkelmans
WCA Delegate
Ron van Bruchem

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

Main event
Registration period

Online registration opened and closed .

Registration requirements
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Click here to display the highlights of the competition.

Mats Valk won with an average of 10.65 seconds in the 3x3x3 Cube event. Erik Akkersdijk finished second (11.48) and Breandan Vallance finished third (11.56).

European records: Mats Valk‎ 3x3x3 Cube 9.20 (average).

Event Name Best Average Representing 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
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
3x3x3 With Feet Erik Akkersdijk 1:09.72 1:22.83 Netherlands 1:22.551:09.721:36.21
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
Event Round Format Time limit Cutoff Proceed
3x3x3 Cube First round Ao5
Second round Ao5
Final Ao5
2x2x2 Cube Final Ao5
4x4x4 Cube First round Bo2 / Ao5 2 attempts to get < 1:30.00
Final Ao5
5x5x5 Cube First round Bo2 / Ao5 2 attempts to get < 2:00.00
Final Ao5
3x3x3 Blindfolded Final Bo2 / Bo3 2 attempts to get < 4:00.00
3x3x3 Fewest Moves Final Bo1 1 hour
3x3x3 One-Handed First round Ao5
Final Ao5
Megaminx Final Bo1 / Ao5 1 attempt to get < 2:00.00
Pyraminx Final Ao5
Square-1 Final Bo2 / Ao5 2 attempts to get < 45.00
3x3x3 With Feet Final Bo1 / Mo3 1 attempt to get < 3:00.00
Magic Final Ao5
Master Magic Final Ao5

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 result to beat to proceed to the second phase of a cutoff round (see Regulation 9g).


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.

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