Why we will lose to the Chinese

Solution listed: Move 3 to 4.

Solution listed:
Move 3 to 4. l->r
Move 5 to 3. r->l
Move 6 to 5. r->l
Move 4 to 6. l->r
Move 2 to 4. l->r
Move 1 to 2. l->r
Move 3 to 1. r->l
Move 5 to 3. r->l
Move 7 to 5. r->l
Move 6 to 7. l->r
Move 4 to 6. l->r
Move 2 to 4. l->r
Move 3 to 2. r->l
Move 5 to 3. r->l
Move 4 to 5. l->r

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