Here's another original chess problem of mine for you all to solve today!
In the following position, White wants to stalemate Black even though they can win, for unknown, unclear, unexplained, and illogical reasons.
In how many moves can White forcibly stalemate Black? You may only use your 100%, organic, al naturale brain power!
Answer
The title means
that we are going to use the windmill technique (Zephyr is the name of a wind).
Here is a solution: apronus link.
PGN:
[FEN "5Nqk/pbppp1r1/4NQR1/6pK/6pn/2b3p1/1B4p1/r5n1 w - -"] 1. Rh6+ Qh7 2. Rxh7+ Kg8 3. Rxg7+ Kh8 4. Rxe7+ Kg8 5. Rg7+ Kh8 6. Rxd7+ Kg8 7. Rg7+ Kh8 8. Rxc7+ Kg8 9. Rg7+ Kh8 10. Rxb7+ Kg8 11. Rg7+ Kh8 12. Rxa7+ Kg8 13. Rg7+ Kh8 14. Ng6+ Nxg6 15. Rxg6+ Kh7 16. Rg7+ Kh8 17. Rxg5+ Kh7 18. Rg7+ Kh8 19. Rxg4+ Kh7 20. Rg7+ Kh8 21. Rxg3+ Kh7 22. Rg7+ Kh8 23. Rxg2+ Kh7 24. Rg7+ Kh8 25. Rxg1+ Kh7 26. Qg7+ Bxg7 27. Rxg7+ Kh8 28. Bxa1
Note that
the bishop could capture any time during the second phase, but this would result in an even faster stalemate. See this for instance. If we assume that the opponent tries to make it as long as they can, then the above is the solution, in 27 moves and a half.
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