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1-0-2-3-4-5-6         d≠0
1-0-2-3-4-5-7-8-9no unvisited neighbour
1-0-2-3-4-5-7-9-8no unvisited neighbour
1-0-2-3-4-7-5-6d≠0
1-0-2-3-4-7-8-9no unvisited neighbour
1-0-2-3-4-7-9-8no unvisited neighbour
1-0-2-3-4-8-7-5-6d≠0
1-0-2-3-4-8-7-9no unvisited neighbour
1-0-2-3-4-8-9-7-5-6

Repeat on your own with src=0 and dest=6