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MatPlus.Net Forum Fairies Some ser-z problems with maximum/sentinelles

### Some ser-z problems with maximum/sentinelles

Some odd problems I discovered (all C+ Popeye):

(= 1+0 )

Fastest way to reach a5?
a) Maximum white, sentinelles pionadverse 0/2
b) Maximum white, sentinelles pionadverse 0/5
c) Maximum white, sentinelles pionadverse 0/6

"There and back again"
(= 1+1 )

ser-zh816, Maximum white, sentinelles pionadverse 0/4

"There and back again part 2"
(= 1+1 )

Fastest way to f5?
a) orthodox
b) Maximum white, sentinelles pionadverse 0/3

I)
a) 3 moves: 1. Kc5[bPd4] 2. Kb6[bPc5] 3. Ka5
b) 9 moves: 1. Ke5[bPd4] 2. Kf6[bPe5] 3. Kg7[bPf6] 4. Kf8[bPg7] 5. Ke7 6. Kd8[bPe7] 7. Kc7 8. Kb6 9. Ka5
c) 23 moves: 1. Ke5[bPd4] 2. Kd6[bPe5] 3. Kc7[bPd6] 4. Kb8[bPc7] 5. Ka7 6. Kb8[bPa7] 7 Kc7 8. Kd8[bPc7] 9. Ke7 10. Kf8[bPe7] 11. Kg7 12. Kh6 13. Kg5 14. Kh4 15. Kg3 16. Kf2 17. Ke1 18. Kd2 19. Kc1 20. Kb2 21. Ka3 22. Kb4 23. Ka5
Very large difference in length because of one extra black pawn

II) 1. Ka5[bPa4] 2. K*a4[bPa5] 3. Ka3[bPa4] 4. Ka2[bPa3] 5. K*a3[bPa2] 6. K*a4[bPa3] 7. K*a5[bPa4] 8. Ka6[bPa5] 9. K*a5[bPa6] 10. Kb4 11. Kc3 12. Kd4 13. Ke5 14. Kf6 15. Kg7 16. Kh8
I like the pendulum moves on the a-lines, just to get the black pawns on the board

III)
a) 3 moves: 1. Kd7 2. Ke6 3. Kf5
b) 21 moves: 1. Kd7 2. Ke8[bPd7] 3. Kf7 4. Kg8[bPf7] 5. Kh7 6. Kg8[bPh7] 7. Kf7 8. Ke8[bPf7] 9. Kd7 10. Kc8[bPd7] 11. Kb7 12. Ka6 13. Kb5 14. Ka4 15. Kb3 16. Kc2 17. Kd1 18. Ke2 19. Kf3 20. Kg4 21. Kf5
After 10 moves the king is back where he started, but with 3 extra black pawns on the board.