request for help with learning chess notation and syntax

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Somebodysson


In a recent post someone wrote this:

1. e4e52. f4exf43. Bc4Nc64. d4(4. Nf3g5)4... Nf65. Nc3Bb46. Ne2f37. gxf3d58. exd5Nxd59. O-ONxc310. bxc3Bd6

Does the 'phrase' in parenthesis mean 'if white had played Nf3 in response to Nc6, Black would pplay g5 and this is winning'.

I'm really just asking how to read the notation.

Here's another, slightly more complicated, with different colors. 

19. Qb5+Kc8(19... c620. Qxb7+Kd8(20... Ke621. Qe7#)21. Qc7#)

What do the different colors signify? Should I read this "The nineteenth moves were Qb5+ Kc8. If black had responded to the Qb5+ with ...c6, then white could have played Qxb7 and Black would have to play Kd8 resulting in checkmate on the next move with 21. Qc7#"? How do I read the red part? Is it 'another move by Black would have resulted in checkmate anyway, via this different set of moves'

Is there a link to a site that explains the grammar and syntax of chess writing, variations, etc.? I need to learn it, and simple google searches of 'chess syntax' 'chess notation' etc. just teach the algebraic or descriptive notation, which I have no trouble with; I have trouble with the variations, the alternate lines. thanks


EscherehcsE
Somebodysson wrote:


In a recent post someone wrote this:

1. e4e52. f4exf43. Bc4Nc64. d4(4. Nf3g5)4... Nf65. Nc3Bb46. Ne2f37. gxf3d58. exd5Nxd59. O-ONxc310. bxc3Bd6

Does the 'phrase' in parenthesis mean 'if white had played Nf3 in response to Nc6, Black would pplay g5 and this is winning'.

Yes, except that the alternate line inside the parentheses does not imply that either side is winning. To indicate good moves, bad moves, or whether one side is winning, you would have to add standard annotation symbols (for example, !, ?, ??, etc.) or simply add text to indicate which side is winning (for example, Best is, Winning is, Losing is, when White is losing, when Black is losing, etc.).

https://en.wikipedia.org/wiki/Punctuation_%28chess%29

Somebodysson

thanks EscherehcsE. So, why do they put the alternate lines in the parentheses, if they aren't saying something about their evaluation of that line?

Also, what about the second example? What does the red line mean? Oh, I see that the colors didn't copy. 

Any other links about how they list alternate variations? I can't be the only beginner who has trouble with this?

EscherehcsE

"So, why do they put the alternate lines in the parentheses, if they aren't saying something about their evaluation of that line?"

The alternate lines are just more variations for the reader to consider. The person annotating the alternate lines can add evaluation symbols or values if he wants to.

"Also, what about the second example?"

Your interpretation of the second example was exactly correct!

Somebodysson
EscherehcsE wrote:

"So, why do they put the alternate lines in the parentheses, if they aren't saying something about their evaluation of that line?"

The alternate lines are just more variations for the reader to consider. The person annotating the alternate lines can add evaluation symbols or values if he wants to.

"Also, what about the second example?"

Your interpretation of the second example was exactly correct!

oh, thanks so much. I really wasn't sure at all!