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
$9☒Worst move
$10 or $11==Equal position
$13~ or inf∞Unclear 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
$20+−−White has a crushing advantage
$21−−+Black has a crushing advantage
$22⨀Zugzwang
$32⟳Development advantage
$36↑Initiative
$40→Attack
$44⯹Compensation
$132⇆Counterplay
$138⨁Zeitnot
$140∆With the idea…
$141∇Aimed against…
$142⌓Better is…
$143≤Worse is…
$145RREditorial comment
$146NNovelty

References