Forum Archive :
Puzzles
Henrik's proposed puzzle is to go from the opening position (first diagram)
to the mirror image position (second diagram). Below the diagrams is my
solution. Can anyone accomplish this in fewer than ten moves?
Start:
24 23 22 21 20 19 18 17 16 15 14 13
++++++++++++++
 X O   O X 
 X O   O X 
 O   O X 
 O   X 
 O   X 
   
 X   O 
 X   O 
 X   X O 
 O X   X O 
 O X   X O 
++++++++++++++
1 2 3 4 5 6 7 8 9 10 11 12
Finish:
24 23 22 21 20 19 18 17 16 15 14 13
++++++++++++++
 O X   X O 
 O X   X O 
 X   X O 
 X   O 
 X   O 
   
 O   X 
 O   X 
 O   O X 
 X O   O X 
 X O   O X 
++++++++++++++
1 2 3 4 5 6 7 8 9 10 11 12
< (X bears off this direction)
                                  
Solution:
X O
================================ ===============================
1. 21: 6/5, 6/4 66: 24/18(2), 13/7(2)
2. 55: 8/3(2), 6/1(2) 44: 13/9(2), 8/4 6/2
3. 11: 24/23*, 13/12(2), 3/2 33: bar/22*(2), 8/5 6/3
4. 33: bar/22*, 24/21*, 23/20*/17* 66: bar/19*(4)
5. 11: bar/24, 13/12(3) 55: 6/1*(2), 9/4*, 8/2
6. 44: bar/21*(2), 22/18*, 21/17 22: bar/23*(2), 23/21*, 19/17*
7. 22: bar/23*(3), 21/19* 55: bar/20*(2), 22/17, 9/4
8. 41: bar/21*, 18/17 66: bar/19, 23/17, 18/12(2)
9. 42: 23/17, 23/19 44: 20/12(2)
10. 22: 23/21, 21/19(3) 33: 22/19, 21/12
(For moves 8 and 9, X can reach the target position with 44 and 21, but
he has to stall in order for White to catch up.)
Nack




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