The gap is your tool.
Move the empty position with purpose and preserve any row already restored.

Eight numbered tesserae surround a single open space. Shift adjacent pieces until the ceremonial coin returns to perfect order.
Step onto the mosaicOnly a tile touching the open space can move. Restore the sequence from one through eight within the move allowance.
Move the empty position with purpose and preserve any row already restored.
Cobalt, terracotta and celadon turn the board into a ceramic floor.
No wagering, purchase, account, financial value or reward is involved.