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Recent posts

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Newsletter Update: Slow(er) Productivity
In the last 4 years, I have written +300 newsletters and published 19 chess books. It has been a very intense and productive period, but it is also…
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Martin B. Justesen
3
Part II of Mapping Checkmate Patterns with a 27-Dimensional Fingerprint
Last week I posted a try to find and organize checkmate patterns using a clustering algorithm combined with a focused look on the 3x3 squares around the…
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Martin B. Justesen
8
Mapping Checkmate Patterns with a 27-Dimensional Fingerprint
Some days ago, I read in a blog post on Lichess that the kill box checkmate pattern had been added as a puzzle keyword.
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Martin B. Justesen
24
The Tactics Ladder is Now Free
I’ve decided to make TacticsLadder.com completely free to use.
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Martin B. Justesen
1
Building a Data-Driven Chess Opening Repertoire + FREE TEST REPERTOIRE AGAINST 1. e4
Today, we'll explore a new approach that combines database statistics and engine evaluation to build an opening repertoire.
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Martin B. Justesen
10
#2 Weekly Calculation Time
This week has been a bit challenging for me.
 • 
Martin B. Justesen
5
#1 Weekly Calculation Time
While I continuously work on fixing bugs and improving tacticsladder.com, I have also considered how to develop this newsletter.
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Martin B. Justesen
12
Who Wears the Trousers in the Chess World?
Magnus Carlsen’s recent actions at the World Rapid and Blitz Chess Championships were not just controversial but a significant rebellion against FIDE.
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Martin B. Justesen
12
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