Six small puzzles, each from a different field. Played by everyone, refreshed at midnight.
Identify the bone, then five bonus rounds.
Hint · A bone from the human skeleton.
Landlocked in Central Asia.
Late Cretaceous, North America.
White to move and win.
Visible in the northern winter sky.
Atomic number under 20.
Seven days, one body system. Get every puzzle right to unlock the bonus.