White to play, White mates in 16 [O.T.Blathy]
This chess puzzle came from a book I just recently picked up from amazon called Book of Extraordinary Chess Problems: 120 Unusual Puzzles by Stephen Addison. A suggested read for anyone interested in chess problems.
Its a little easy but still a pretty good.
1. Kxe1 Qa1 2. h3 Qa2 3. h4 Qa1 4. h5 Qa2 5. h6 Qa1 6. h7 Qa2 7. h8 promoted to knight. Qa1 8. Kf7 Qa2 9. Kd8 Qa1 10. Kb7 Qa2 11. Kxc5 Qa1 12. Kd7 Qa2 13. Ke5 Qa1 14. Kxc4 Qa2 15. Ka5 Qa1 16. Kxb3 #