RightClick : Camera rotation

LeftClick : Select piece

Space : Center view on chessboard

Ctrl + LeftClick : Unlock selected item

Ctrl + RightClick : Camera translation

Ctrl + S : Save game

Ctrl + R : Load last saved game

Alt + S : Download savegame file

Alt + R : Load savegame file

Ctrl + Z : Undo last action

Ctrl + G : New game

Ctrl + P : Unlock all objects

Z Q S D : Rotate table (if objects unlocked)

NumKey : Preset camera views

Esc : Hide on-screen display