As we continue to document our games with AN and FEN, remember that every FEN has 7 slash marks. We use uppercase letters for White pieces and lowercase letters for Black pieces and pawns.
The letter 'P' is not used in AN, and all squares are designated with lowercase letters. Some of us forget to write the x down for a capture and the + sign for check. Always remember to disambiguate. If two knights or two rooks can capture a piece you need to identify which one, e.g., R8xd4 or Nfxd4. Two potential capturing pieces can always be disambiguated by their file letters or their rank numbers (because both pieces cannot be on the same square).
Write clearly so that you and everyone else can distinguish a from d, b from 6, etc.
FENs use uppercase letter for White pieces and lowercase letters for Black pieces. Write clearly so that you and everyone else can distinguish p from P, r from n, n from N, k from K, etc.
If I cannot decipher a game, I have to roll it back to the last clear valid position so that we can continue the game at the following meeting.
Thousands of exercises: mate in one; mate in two; mate in three
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