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 ...
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  • 7,322
26 votes
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What does "bxa1=Q" mean?

I would read it as "Pawn takes something on a1 and promotes to a Queen". Strictly according to the Laws of Chess the = sign should not be there (see article C.11). C.11 In the case of the ...
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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" ...
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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 ...
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  • 31.9k
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 ...
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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.
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  • 74.4k
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 ...
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  • 4,830
17 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 ...
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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
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  • 21.4k
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' '...
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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 ...
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  • 74.4k
13 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 ...
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  • 664
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 (...
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  • 19.8k
12 votes
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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 ...
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  • 12.8k
11 votes
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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 ...
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  • 74.4k
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 ...
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  • 1,227
10 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 ...
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  • 10.2k
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 = ...
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10 votes
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How many times can the same pawn move be made in a game?

Due to the geometry of pawns moves, 8 seems to be the maximum for singular pawn moves. Here is an example game for "e5." [FEN ""] 1. e4 Nc6 2. e5 Nb8 3. e6 dxe6 4. d3 e5 5. Nc3 e4 ...
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9 votes
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Is it legal to record moves that have not yet been played?

Well, it isn't legal for two reasons, One, lets say that the opponent gave you an handshake. That would mean that the recorded moves are null, and it may cause some troubles with the arbiters. Two, ...
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  • 3,315
9 votes
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Why do Super GMs still have to write down their moves at tournaments?

I can think of several reasons: The players will want to know how many moves have been played in the game (as you often get extra time after moves 40 and 60), how many moves have been played before ...
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  • 3,425
9 votes
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What is the best 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....
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  • 240
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.
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  • 23.8k
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 ...
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  • 5,774
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
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  • 15.1k
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/...
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7 votes

What service can be used to save and replay/analyze a chess match?

For an online tool, lichess is good. You can enter your game and have it analysed by a computer engine. The analysed game will have annotations in plain language ("mistake/blunder/inaccuracy") and ...
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  • 20.3k
7 votes

Help! I cannot understand this game’s notations!

Looks like it's just algebraic notation using Dutch as the language, most likely given the author's nationality and that the rest of the article looks like Dutch - not the whole of the world speaks ...
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  • 4,031
7 votes

Question on chess commentary in written form

The comments in braces means that the move before had the effect noted in that set of { }s . It is just annotating the game to explain the moves. It may have been spoken during the match if it ...
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7 votes
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Question on chess commentary in written form

Here is what all of that means: "ICGA's footnote to caption: "There is a picture above all this, and they are just noting the game that had been played in the picture. The ICGA is the International ...
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  • 31.9k

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