ChessFlash

Updated to use the latest version.
Using the ChessFlash PGN Viewer is very straight-forward. To load the game into the viewer click the "Click to Play" button.

When the game is loaded you can use the forward arrow below the board to scroll through the main line one move at a time. Initially, the forward arrow has the "focus" (yellow box). When it has the focus pressing the space bar will also move forward one move. The back arrow backs up one move at a time. Clicking the back arrow changes the focus to the back arrow button. When the back arrow button has the focus, pressing the space bar backs up one move at a time.

To see a position from a variation other than the mainline click the text of the variation in the MoveText area (to the right of the board). Now the arrows under the board scroll through that variation only. To return to the main line click a move in the main line in the MoveText area.

To flip the board perspective click the flip button (up and down arrows) under the board. The rightmost widget under the board is the side-to-move indicator and changes color with each move scrolled through.