I don't know if Omni has any chess players on the staff, but you can take it from me that:
http://www.shredderchess.com/daily-chess-puzzle.html
misrenders. The first puzzle shown - Easy - is OK, but switching to Medium or Hard, and any puzzle thereafter, leads to complete nonsense on the chess board ...
Oddly, playing online:
http://www.shredderchess.com/play-chess-online.html
which would seem to be more difficult, renders perfectly - no spurious pieces shown.
No problem with Safari 4 beta; this is the only (!) instance I have come across of significant rendering differences between the browsers ...
http://www.shredderchess.com/daily-chess-puzzle.html
misrenders. The first puzzle shown - Easy - is OK, but switching to Medium or Hard, and any puzzle thereafter, leads to complete nonsense on the chess board ...
Oddly, playing online:
http://www.shredderchess.com/play-chess-online.html
which would seem to be more difficult, renders perfectly - no spurious pieces shown.
No problem with Safari 4 beta; this is the only (!) instance I have come across of significant rendering differences between the browsers ...