Digitised historical manuscripts, etc.

[Ajedrecista]

Hello:

There are some news (in Spanish) about a documentary about the Scachs d'amor poem (550 years) and the introduction of modern rules such as the current powerful queen. The video of the documentary (in Spanish) is here:

Documental "Valencia, cuna del ajedrez moderno"

I must see the whole documentary. Just for the record, former World Champion GM Viswanathan Anand appears in the video speaking in Spanish. I knew that he has lived for many years in Spain —like GM Veselin Topalov—, though I had not listened him in Spanish until now.

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A curious thing that I learnt from the news is that one method of the estimate of date of the poem (1475) was a study of alignments of Mars, Venus and Mercury because the poem starts saying so. It was already written in one source that I shared before:

[...]

Source: https://www.facv.org/2022/2022-acta-nac ... oderno.pdf

[...]

And completely did not pay attention to it at pages 7 and 8 of the PDF. This thing of alignments is also depicted in what is known as The Sky of Salamanca at the University of Salamanca (Spain) (more details here) around the same date [claimed August 1475 in The Sky of Salamanca and claimed 1475/06/30 (or less probably 1477/06/04) for the poem], but there is a refutation to the 1475 hypothesis of The Sky of Salamanca. The cities of Salamanca and Valencia are around 300 miles far each other (around 4.34º of the perimeter of the Earth). There is an online calculator for astronomical ephemerides in Spain (reached from this web), able to calculate in 1475.

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There are more articles about the poem, for example three at ChessBase during the COVID-19 lockdown, which are translations to the original article in Spanish (with other claimed date: 1475/04/03):

https://en.chessbase.com/post/scachs-damor-poem-part-1
https://en.chessbase.com/post/scachs-damor-poem-part-2
https://en.chessbase.com/post/scachs-damor-poem-part-3

Other question is if all these dates are in the Gregorian calendar.

Summarizing: I thought that the 1475 date was pretty confident and not estimates with ingenious methods.

Regards from Spain.

Ajedrecista.

[jp]

Here's a site with an English translation of the poem, alongside the corresponding moves:

https://scachsdamor.org/