8th Mental Calculation World Cup 2018


#1

This is a post regarding the Mental Calculation World Cup 2018 . This competition’s general information is quoted below from a recent post in Yahoo’s Mental Calculation Group by the competition’s organizer: Dr. Ralf Laue. The official announcement was published yesterday 12th January 2018 in the Yahoo Mental Calculation Group (1200+ members there, since 2002)

Also a few more links about this competition:

Its wiki : https://en.wikipedia.org/wiki/Mental_Calculation_World_Cup
For anyone with a FB page, a fanpage of the competition can be found here: https://www.facebook.com/mentalcalculationworldcup
An intro article on the purpose of this competition, in UK’s Guardian here:https://www.theguardian.com/science/alexs-adventures-in-numberland/2012/oct/10/mental-calculation-world-cup
And some videos with highlights from previous competitions:
https://www.youtube.com/watch?v=LzgaRkBjWMQ (MCWC 2014)
https://www.youtube.com/watch?v=3pJXfQCe6yM ('14 closing ceremony)
https://www.youtube.com/watch?v=3yhyw_bsDjg (MCWC 2012)
https://www.youtube.com/watch?v=rPTKZ4PLkMc ('12 champion doing Anzan)
https://www.youtube.com/watch?v=Mq_6b6Yo0d4 (MCWC 2010 champion)
https://www.youtube.com/watch?v=jz9--bTcGGo (MCWC 2008)
https://www.youtube.com/watch?v=o25DtVKj63U (MCWC 2006)
https://www.youtube.com/watch?v=vfCy43eDYyI (MCWC 2004)

Nodas


#2

New post in Yahoo’s Mental Calculation Group from the event’s organizer about the 40 finalists of the Mental Calculation World Cup 2018 taking place in Wolfsburg, Germany (28-30 September 2018) :


#3

I read here about the updated list of MCWC 2018 participants, which was formed recently:
https://worldmentalcalculation.com/2018/07/02/world-cup-2018-list-of-participants

Apparently, there were a few cancellations of the Genius Kid team from Mumbai. But there are plenty of experienced runner-ups summoned in order to make the new final list of around 40 participants. (from 21 countries so far)

The new list is here:


#4

Results from the MCWC 2018 in Wolfsburg:
(the 2 numbers next to each competitor are the 1st and 2nd round scores, respectively)

CALENDARS

1 Marc Jornet Sanz (Spain) : 71 and 71
2 Nodas Boukovalas (Greece) : 61 and 59
3 Tina Bauer (Germany) : 61 and 53

ADDITIONS

1 Jeonghee Lee (South Korea) : 30 and 30
2 Tomohiro Iseda (Japan) : 25 and 27
3 Osako Takuma (Japan) : 9 and 23

MULTIPLICATIONS

1 Tomohiro Iseda (Japan) : 20 and 18
2 Marc Jornet Sanz (Spain) : 6 and 18
3 Freddis Reyes Hernadez (Cuba) : 17 and 6

SQUARE ROOTS:

1 Tomohiro Iseda (Japan) : 42 and 37
2 Hiroto Ihara (Japan) : 40 and 31
3 Mohammad El Mir (Lebanon ) : 22 and 22

MOST VERSATILE CALCULATOR: (5 surprise tasks combined)

1 Wenzel Gruss (Germany) : 461.17
2 Tomohiro Iseda (Japan) : 333.91
3 Samuel Engel (USA) : 330.01

MEMORIAD TROPHY (the 4 main tasks combined: Calendars, Multiplications, Square Roots and Additions) :
Winner : Tomohiro Iseda (Japan)

COMBINATION RANKING: (10 tasks, for the overall winner of Mental Calculation World Cup 2018 ). The maximum is 1000 points, as usual:

1 Tomohiro Iseda (Japan) 757.18
2 Hiroto Ihara (Japan) 663.54
3 Wenzel Gruss (Germany) 593.80
4 Jeonghee Lee (South Korea) 525.79
5 Marc Jornet Sanz (Spain) 455.50
6 Samuel Engel (USA) 446.83
7 Mohammad El Mir (Lebanon) 416.15
8 Osako Takuma (Japan) 366.00
9 Alberto Rodríguez Alonso (Spain) 334.78
10 Martin Drees (Germany) 327.25
11 Robert Fountain (Great Britain) 311.38
12 Georgi Georgiev (Bulgaria ) 310.09
13 Freddis Reyes Hernadez (Cuba) 300.17
14 Nodas Boukovalas (Greece) 285.56
15 Daniel Timms (Great Britain) 285.30
16 Andrew Robertshaw (Great Britain) 270.47
17 Andreas Berger (Germany) 261.27
18 Tina Bauer (Germany) 248.25
19 Erich Prem (Austria) 218.52
20 Nandini Garg (India) 217.58
21 Pascal Kaul (Switzerland) 208.40
22 Hetansh (India) 177.93
23 Kenneth Wilshire (Great Britain) 166.01
24 Alexander Drygalla (Germany) 164.75
25 Jean-Jacques Bruyant (France) 147.25
26 Bjoern Gumboldt (Germany) 131.41
27 Dirk Ewers (Germany) 119.32
28 Aaryan Gupta (India) 113.40
29 Arsen Rakhymbekov (Kyrgyzstan) 58.71
30 Hakim Belouad (Algeria) 46.48
31 Sreenidhi Neermanvi (India) 40.87
32 Christopher Beeg (Germany) 31.56
33 Henni Walid (Algeria) 30.99

Note: All names are spelled in their latinised equivalent form.

New successful World Record attempts in Wolfsburg :

  • Marc Jornet Sanz (Spain) - New WR in 8x8 multiplications, 10 tasks, all correct in 169.85"
  • Jeonghee Lee (South Korea) - New WR in 10/5 divisions, 10 tasks all correct in 53.20"

Here is a group photo (outside the Phaeno venue) showing the (6 out of the total 11) Top-3 winners in some categories, holding our trophies for 2018:

https://i.imgur.com/32z8Laf.jpg (From left to right: Marc (Spain), Osako (Japan), Tomohiro (Japan), Hiroto (Japan), Freddis (Cuba), Nodas (Greece) )

All Top-3 winners in every category are shown in the photo above, except Sam Engel, Wenzel Gruss, Tina Bauer, Mohammad El Mir and Jeonghee Lee, who will appear in other photographs soon.

Congratulations to Tomohiro Iseda, the winner of Mental Calculation World Cup 2018.

I was also glad to improve in calendars, from my 3rd place in 2016 in Bielefeld, to my 2nd place now in 2018 in Wolfsburg.

It was a great competition. Thanks to all the organizers.

Nodas


#5

Nice results Nodas, to do +60 with Pen and paper its really difficult.


#6

Thanks Amron.

But actually that slowing down happens to every written competition I’ve been since since 2010, my written score hovers around 60% or max 70% of my best score in PC.

E.g. 2010 I got 16 out of my 25 (my best in PC back then)
2012: 36 out of 55 (my best back then)
2014: 52 out of 82
2016: 54 out of 96
2018: 61 out of 103 (my current best )

So to do 70 on paper (to chase the Gold) I think in 2020 I will try to do more than 110 on software, but sometimes this puts a strain on the tendons of the fingers so there has to be some kinda schedule. But now there is not much motivation for me, because the World record now is 140 and that’s too hard. So, I only tried for the European record this year and did in some trials in Wolfsburg I did 92 D1M on Freddy’s PC but I could not break Jan’s 96 D1M (European record). Sometimes small details can make the difference between getting the record or not.

But even in Memoriad where we use the software I only do around 80% of my best (82 out 103), because in competition there is some extra pressure to perform well, and it’s really hard to get your maximum performance on the final competition. Anyway.

The tasks of this competition can be found here:

http://www.recordholders.org/downloads/worldcup/tasks-2018/tasks2018.pdf