On the copyright page of The Chess Memory Palace, you will find a decimal number (e.g. 1.9). This is the version number. As the book is available as print-on-demand and ebook, I am able to make small updates without doing a large print run.

This page lists the versions and the changes that have been made. All these changes are quite minor. If you are one of the early adopters with an early version, the minor errors should not affect your enjoyment of the book at all. And technically you have a limited edition copy!


  • Original version, released 29 December 2022


  • Released 1 January 2023
  • Corrected spelling of “Anthony”, in Notes


  • Released 7 January 2023
  • Corrected “composite images” to “picture word pairs”, in Miscellanea – Picture Words in Other Languages section
  • Corrected publication date of Anand’s Mind Master to 2019, in Notes


  • Released 13 January 2023
  • Changed “boardgames to board games”, in Miscellanea – Other Board Games section.
  • Corrected grammar “An intriguing…” in Notes


  • Released 21 January 2023
  • Improved appearance of Thomas Nelson section on copyright page
  • Corrected grammar “we need to fill” in Essential Memory Techniques – What makes things memorable? section
  • Changed “Plane entrance door” to “Plane entrance” in Figure 2.2
  • Changed “Entrance” to “Plane entrance” in Figure 2.3
  • Removed double space after full stop on Note 21 to Chapter 3
  • Changed “song lines” to “songlines” on Note 1 to Chapter 4


  • Released 25/26 February 2023
  • Corrected grammar “if the aim were” on Note 2 to Chapter 6
  • Changed “choose picture words” to “select picture words” in Memory Palace Architecture – mapping the locations section
  • Changed “choose a picture word” to “select a picture word” in Memory Palace Architecture – selecting picture words section
  • Changed “choose just one” to “pick just one” in Memory Palace Architecture – selecting picture words section
  • Removed sentence “You will quickly become used to the English words in your memory palaces” in Picture Notation – Your turn section (footnote)
  • Added “By the same author” section to copyright page
  • Corrected grammar “this is even worse” in Memorising endgames – Horizontal reflections section
  • Prevented line breaks between “Chapter” and chapter number in whole book
  • Prevented line breaks between “Page” and page number in Notes
  • Added page numbers to cross references in Notes
  • Corrected order of notes to Chapter 1 (moved physically higher up two places)
  • Corrected order of notes to Chapter 6 (moved on e6 down two places)
  • Clarified discussion of understanding endgames and added reference to purpose of forgetting
  • Added reference to number shape system in note on major system
  • Corrected reference text to “forgot one of the two” in Notes


  • Released 5 April 2023 (and earlier in ebook)
  • Removed “sugar” from g4 in Appendix
  • Removed word from g3 in Appendix


  • Released 2 May 2023
  • Removed incorrect descriptive notation from list in Chapter 1
  • Changed captions on Figures to “Structure of a picture word pair” and “Structure of a robust composite image”


  • Released 13 June 2023
  • Changed epigraph to McCall Smith quote in Chapter 3


  • Released 5 August 2023
  • Corrected “b” to “s” in explanation of samurai in Chapter 1
  • Added line on personal use to ebook copyright page


  • Released 10 September 2023
  • Corrected ICCF notation in Chapter 1 and added word “numeric”