visualizações
Chessvis V3.1 - Puzzle Visualization
Chessvis V3.1 beta video - puzzle options, off-line puzzles and graphics changes
Chessvis sample video on daily puzzle count
Chessvis - highlight squares on puzzle success/mistake
Chessvis 2.0 - Opening Practice
Chessvis 2.0 - Repertoire Library
Chessvis 2.0 - Who's Guarding Whom
Chessvis 2.0 - Opening Explorer