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30 votes
Accepted

Two knights can move to e7, but the move is only specified as Ne7

The c6 knight is pinned by the bishop on b5. Note that if the c6 knight were to move it would leave Black's king in check, which renders any such move illegal. Therefore it is ok in this case to ...
Scounged's user avatar
  • 7,998
23 votes
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Ambiguity in notation resolved by +

Would it be sufficient here to write Ne4+ (meaning Nce4) only (i.e. without the "c" but with "+"), as Nfe4 would not be check? It depends on exactly what you mean by "sufficient". By "normal" ...
Brian Towers's user avatar
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22 votes
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Why are players required to record the moves in World Championship Classical games?

To my understanding there are a few reasons to require the players to record the moves. However, I believe that most of them could also be solved with a sufficient technological investment. Tradition:...
Hans-Peter Schrei's user avatar
21 votes

Why do I need to notate the file when capturing with a pawn?

You seem to want the notation to be as efficient as possible, disregarding ease of use. Let's take this to extremes: If White only has a single move or capture that ends on c4, then instead of Bc4 or ...
TonyK's user avatar
  • 905
20 votes

Why is offering draw not recorded but giving a check recorded?

Both recording checks and draw offers are personal preference, and neither is required in your notation. I actually do record both checks as "+" or "++", and draw offers as "(d)". I know I am not the ...
PhishMaster's user avatar
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20 votes
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Why is offering draw not recorded but giving a check recorded?

According to the FIDE Laws of Chess: Appendix C. Algebraic notation C.12 The offer of a draw shall be marked as (=) As with a number of the laws regarding recording of the moves this is not ...
Brian Towers's user avatar
  • 98k
20 votes
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What is the algebraic notation for the bishop?

The expression I used is bc3 Lowercase letters ALWAYS refer to pawns/files. Uppercase ALWAYS refers to pieces. You need to use Bxc3 for "Bishop at d2"xc3.
Brian Towers's user avatar
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18 votes
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Is "Rdxd2" algebraic chess notation valid?

If you have two rooks, standing on different files (one of them on the d-file), that could capture on d2, then Rdxd2 is the correct notation. If you have two rooks on the d-file, and both can take on ...
Dag Oskar Madsen's user avatar
18 votes

Ambiguity in notation resolved by +

The FIDE Laws of Chess 2018 are unambiguous: you should write Nce4, and the + sign is optional and not disambiguating. Ne4+ is not sufficient. Appendix C (algebraic notation), article C.10 basically ...
Remellion's user avatar
  • 5,040
18 votes
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Why do I need to notate the file when capturing with a pawn?

There is no real reason, it's not technically necessary. Equally, you don't generally have to write the 'x'. Knowing where the piece is going is enough to know that it's a capture. People must have ...
RemcoGerlich's user avatar
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16 votes

Why are the symbols 0-0 and 0-0-0 used for castling in algebraic notation?

The castling notation was invented by Johann Allgaier and used for the first time in his 1811 2nd edition of his Neue theoretisch-praktische Anweisung zum Schachspiel. He didn't explain why he came ...
Queeg's user avatar
  • 684
16 votes
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How many times can the same pawn move be made in a game?

Eight is the maximum due to the geometry of the board. Only five of one side and three of the other can converge on the same single square. Addendum: o@Red_Floyd2 on reddit found a faster way in 18.0 ...
Rewan Demontay's user avatar
15 votes
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How is notation done for similar pieces capturing the same piece?

Your two knights are on d2 and f2. Ndxe4, Nfxe4, Your two knights are on f2 and f6. N2xe4, N6xe4 Your three knights are on d2, f2 and f6 (you promoted a pawn) Ndxe4, Nf2xe4, N6xe4
SmallChess's user avatar
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14 votes

How can one easily learn chess board coordinates?

Some websites offer "coordinate drills". I'm not sure how effective they are for learning, but you can certainly give them a try. I found it to be surprisingly entertaining to try to beat my personal ...
itub's user avatar
  • 10.6k
14 votes

How to correct reversed game notation?

Adding on to Brian Towers' answer, there is a quick way you can script this (assuming you are on Linux or another POSIX system with the tr command): cat gamelog.txt | tr 'abcdefgh12345678' '...
vikarjramun's user avatar
14 votes

What does this algebraic notation expression mean?

The "x" means "captures". So, exd5 means the e pawn captures the piece on d5, which may be either a pawn or a more valuable piece. If the piece doing the capturing is not a pawn ...
Brian Towers's user avatar
  • 98k
12 votes
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Unusual chess notation

That's descriptive notation. Click that to go to the wiki page. It is an obsolete notation, having been replaced by algebraic or figurine algebraic notation. B x KP means, Bishop (B) takes (x) Kings (...
Tony Ennis's user avatar
12 votes
Accepted

What happened in this game between Hong Li and Sandor Farago in the FSIM November 2018?

Best guess: the mistake occured before, on move 15 Entry errors are frequent when games are entered into a software, especially if they are not entered by one of the players. Here the operator must ...
Evargalo's user avatar
  • 16.1k
11 votes
Accepted

How to correct reversed game notation?

If you set the board up correctly, i.e. "white on the right and queen on her own colour", then you need to flip the letters like this: a ↔ h b ↔ g c ↔ f d ↔ e and the numbers like ...
Brian Towers's user avatar
  • 98k
11 votes

Is there any other notation system other than algebraic notation?

Other than the algebraic nomenclature: Two off the top of my head are Correspondence chess used 1:1 to 8:8 to label the squares. Descriptive notation predated algebraic: 1. P-K4 P-K4 2. KN-B3 QN-B3 ...
cousin_pete's user avatar
  • 1,302
10 votes
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Help! I cannot understand this game’s notations!

Can anyone please explain to me what these symbols mean? These are the abbreviations for the pieces in Dutch. I believe they are almost the same as the German ones (with the exception of the knight = ...
Brian Towers's user avatar
  • 98k
10 votes
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What type of notation is "B3", as used by Lasker?

This is descriptive notation, a composition where the letter B stands for bishop and the number 3 for the third rank from either players view. Thus, as mentioned in your box, B3 may refer to the ...
Peter Fischer's user avatar
9 votes
Accepted

What are some good resource to learn chess notation?

You could start just with the wikipedia page here for example: https://en.wikipedia.org/wiki/Algebraic_notation_(chess) Also there were (at least - could be more) two lessons on the notation on chess....
Christian's user avatar
  • 430
8 votes

What does the †† notation mean?

Well, after your update I come to the conclusion that these signs are used by the author to mark the omission of the notation of the respective move by White. This is not a common usage of them, and ...
Annatar's user avatar
  • 5,938
8 votes

Why are the symbols 0-0 and 0-0-0 used for castling in algebraic notation?

A notation like Kg1 would give the impression that only the king is moved. At the very least, it is not obvious that castling moves the rook as well.
Glorfindel's user avatar
  • 24.9k
8 votes
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When are both the rank and file required for disambiguation of a move in PGN/SAN?

Yes, it's possible for a piece to need both the rank and file to distinguish it, although it's rare. For example: [FEN "8/1k6/8/8/5Q2/8/3Q1QK1/8 w - - 0 1"] 1.Qf2e3
D M's user avatar
  • 19.6k
8 votes

Why do I need to notate the file when capturing with a pawn?

Imagine a situation where there is also a white pawn on c4, for example 1. e4 d5 2. c4 e6 3.xd5. You would have no way of knowing which pawn took on d5, was it the one on e4 or the one on c4.
dzi's user avatar
  • 243
8 votes

Why do I need to notate the file when capturing with a pawn?

I'd suggest a different reason: to make it sound natural. How would you pronounce Nxe5? I would say "knight takes e5". In that case, the putative pawn move "takes d5" would not ...
Especially Lime's user avatar
7 votes

Tools for automated notation: webcam movie to PGN

It's 2019-12 now and 5 years after the original question. Does any such thing exist (webcam/video to pgn converter)? A prototype maybe? see https://github.com/WolfgangFahl/play-chess-with-a-webcam/...
Wolfgang Fahl's user avatar

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