Here a study that claim that n-back task improve working memory in 30% and memory Span task improve 15%. What if we do a combination of the two tasks? http://releases.jhu.edu/2017/10/17/johns-hopkins-finds-training-exercise-that-boosts-brain-power/
The technique consists in using the major system http://www.memory-sports.com/blog/memory-techniques/the-major-system/ and the eidetic memory
1) convert the first 8 digits in 4 words. First you would have to be able to read 100 digits (50 words) in 40 seconds.
2) Then you use the eidetic memory to see the last 8 digits or less according your personal configuration. You need to expand the peripheral vision.
How to increase your eidetic memory: http://www.insanity-mind.com/increase-eidetic-memory/
How increase peripheral vision? http://www.insanity-mind.com/increase-peripheral-vision/
3)The 2 digit selected in binary are visualized example: (82: phone). If you have time you can do an association with the previous 2 digits. (example phone hit a fish)
Here my Web App to train peripheral vision: http://competicionmental.appspot.com/ (a Web App based on the official App used in this Memory Competition http://speed-memory.com/ and this alternative competition https://fastmemorychampionships.com/)
Example with 12 digits
convert to words eidetic
23 44 55 23 45
00 11 00 00 00
44(rower) is selected to a common n-back task
You practice speed reading, Major System, Eidetic Memory, working memory, mental image visualization, n-back and spatial memory.
Source code: https://github.com/vernetit/rapidmemorynback
Note: You can put your own numbers position in [custom config] on top options in the main screen.
With two days of training i do 2-back task with 67% with 14 digit-span.
With one week i can do 3-back 47% 14 digit-span and 2-back 67% 16-digit span .
What do you think? Thanks!