Mate in 13

1. hxg8=Q+!! Ka7! 2. Qg1+! Ka6 3. Qa1+!! Kb7! 4. Qb1+ Ka6! 5. Qa2+! Kb5 6. Qxa8!! Kb4 7. Qa2 Kc3! 8. Qe2! Kb3 9. Qd2 Ka3 10. Kc6 Kb3! 11. Kb5 Ka3 12. Kc4! Stalemate trap 12... Ka4 13. Qa2# Stalemate trap Mate 1-0

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