Pat a Mat
2017
White wins
1. Kd7 e6 2. fxe6 2. f6+? Kg6 3. Ra1 Rb8 4. Ke7 (4. Rg1+ Kf5 =) 4... Rb7+ = 2... fxe6
3. Kxe6+ White is firing the first battery. 3... Kg6
4. Ra6! White is building the second battery. 4... Rb8 5. Ke7+ Kg7
6. Ra7! The third battery is on the board. 6. e6? Rb7+ 7. Kd6 Kf6 = chameleon echo, WCCT-10 (position B) 6... Kg6 7. e6 Kg7
cyclic zugzwang - WTM
8. Kd6+ White is firing the third battery. 8... Kf6 9. Kd7! 9. e7? Kf7 10. Kd7 Re8 11. Kd6 Rb8 positional draw 9... Kg7! 10. Ke7! 10. e7? Kf7 11. Ra1 Rb7+ 12. Kd8 Rb8+ 13. Kd7 Rb7+ perpetual check
cyclic zugzwang - BTM
10... Rb1 11. Ra8! White destroys the battery. Firing the battery again would be a mistake: 11. Ke8+? Kf6 12. e7 Rb8+ 13. Kd7 Kf7 = chameleon echo 11... Rb7+ 12. Kd6 Kf6 WCCT-10 (position A) 12... Rb6+ 13. Kd7 Rb7+ (13... Kf6 14. Rf8+ Ke5 15. e7 Rb7+ 16. Kd8 Kd6 17. Rf6+ +-) 14. Kc6 Re7 15. Kd6 Kf6 16. Rf8+ +- 13. Rf8+ Kg7 14. e7 +-
Note: The manoeuvre from moves 8 to 10 was discovered by O. Frink (1926)
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