Let's continue once again with Viktor Korchnoi's Tournament, Match, and Exhibition Record (TMER; 1946-2015). In my previous post, Korchnoi's Career 1946-1977, Long Events, I identified a number of discrepancies in Levy & O'Connell's book (L&O) covering the first 30 years -- the Soviet period -- of Korchnoi's career.
Since a discrepancy can arise from a number of situations -- an error in the book, an error in my manipulation of the data, or an error in the TMER index -- each discrepancy needs to be examined further.
Of the 10 discrepancies I flagged, one occurred because Korchnoi's result in an event was recorded incorrectly in the book's summary of his career. All of the others were due to an error in the index of the book : a wrong year, a wrong venue, or a game missing completely. I learned so much from the exercise that I prepared a similar overview of the next tranche of tournaments : where Korchnoi had between 11 and 15 opponents. Once again discrepancies in the number of games are flagged in square brackets ('').
A new curiosity is that five events are missing completely from the book's summary, which was also the original source of my TMER. These need to be investigated separately. While working on all of this, I noticed that L&O includes the month played for many events and days played for many individual games. I'll compare these with the TMER as soon as I get a chance.