Possible Clues:

• Go __ (make a reattempt)
• "Let's try this again"
• Where you may go after reaching an impasse ... or a hint for solving this puzzle's 12 starred clues
• Returning to original problem like an unsuccessful solver?
• Ready to start all over again - having landed on a snake?
• Where a stumped puzzle solver goes?
• Starting again, having another go at solving one ac?
• Where to go after a setback
• As you were when you'd gone right round the board
• 13? 1 19? Defender to make it all right with a person