- Opening a finished game shows its final position, result, score, date
and duration, with Watch from start
- First / previous / play-pause / next / last, speed 1x, 2x, 4x, a
timeline, the move list and arrow keys and space
- Stepping forward animates the move like a live game; jumps show the
position directly
- ?move=n links to a move and follows the shown move
- Players see the board from their own side
- PitAnimator takes its step interval as a parameter
