Pinwheel (shogi)


In shogi, the Pinwheel is an uncommon opening with the rook on the bottom rank 9 enabling it to switch between a Ranging Rook and Static Rook attack.
The pinwheel name comes from the way the king is able to rotate around the gold positioned on the 58 square as if it were a wheel.

Against Static Rook Anaguma

Example of development from Habu.
1. P-76 P-84
2. S-68 P-34
3. P-66 S-62
4. R-58 K-42
5. K-48 K-32
6. K-38 B-33
7. P-56 P-54
8. S-48
8... K-22
9. S-66 S-53
10. P-46 L-12
11. P-36 K-11
12. S-47 S-32
13. G-48 P-85
14. B-77 G-52
15. N-37 P-44
16. P-55
16... Px55
17. Rx55 P*54
18. R-59 G-43
19. P-16 P-14
20. P-26 G-31
21. G-78 P-74
22. B-68 P-94
23. P-96 R-72
24. G-77 P-75
25. Px75 Rx75
26. P*76 R-72

Game example

A similar position occurs in a 1991 game between Yasuharu Ōyama and Michio Ariyoshi.

Itō's Pinwheel variations