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
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