The user can interact with the pgn4web chessboard using the keyboard
or clicking chessboard squares
; hovering the mouse on each square displays an help summary.
A search tool
allows searching within the PGN games.
Errors alert messages are logged, such as failures to load PGN games, incorrect PGN games or incorrect FEN strings. When an error is encountered, the top left chessboard square will flash to signal the exception. The error alert log can be reviewed clicking on the same top left chessboard square.
The user can interact with the pgn4web chessboard clicking chessboard squares:
pgn4web supports chess annotations symbols as defined by the Chess Informant publishing company
Technical note: Chess Informant symbols display requires a modern browser supporting web fonts
, otherwise the game notation might result garbled.
on code from the ficsgames database
, in turn likely based on code from the LT PGN viewer
PNG images from Eric De Mund
, licensed under creative commons attribution-share alike 3.0 unported license
SVG images from Colin M.L. Burnett
, licensed under GFDL
, via Wikimedia Commons.
The figurine fonts are derived from the Liberation Sans
font released under GNU General Public License, with the addition of chess pieces from freeware fonts: the alpha2 font (Peter Strickland), the good companion font (David L. Brown), the merida font (Armando H. Marroquin), the pirate font (Klaus Wolf) and the chess usual font (Armando H. Marroquin). The original chess fonts and more details are available at the en passant site
The chess informant symbols font is used with permission from the Chess Informant publishing company
. The chess ole figurin font is from the ChessOLE project
Remaining pgn4web code is copyright (C) 2009-2013 Paolo Casaschi
and licensed under the terms of the GNU General Public License version 2
as published by the Free Software Foundation
; either version 2 of the License
, or (at your option) any later version.