The table below lists the chess assessment symbols supported by RPB Chessboard.

  • Column NAG corresponds to the numeric code defined in the PGN format specification.
  • Column Alias contain the alias(es) that can be used in place of the NAG in the PGN text.
  • Column Representation shows how RPB Chessboard translates the NAG or its alias into a human-readable symbol.
NAGAliasRepresentationMeaning
$1!!Good move
$2??Poor move or mistake
$3!!!!Very good move
$4????Very poor move or blunder
$5!?!?Interesting move
$6?!?!Questionable move
$7 or $8 Only move
$10 or $11==Equal position
$13~ or infUnclear position
$14+/= or +=White has a slight advantage
$15=/+ or =+Black has a slight advantage
$16+/-±White has a moderate advantage
$17-/+Black has a moderate advantage
$18+-+−White has a decisive advantage
$19-+−+Black has a decisive advantage
$22Zugzwang
$32Development advantage
$36Initiative
$40Attack
$132Counterplay
$138Zeitnot
$140With the idea…
$141Aimed against…
$142Better is…
$143Worse is…
$145RREditorial comment
$146NNovelty

References