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July 4, 2009, Challenge, grid solution

by Yegor Bryukhov — last modified 2009-07-09 15:33

Goal: a, can be solved in 25 moves

B
 a
 b
 a
 B
 B
 A






Rules:
B
 a
 b
 c
 C
 a
 B
 B
 A




aA
B
 a
 b
 c
 D
 d
 C
 a
 B
 B
 A


Aa
B
 d
 C
 a
 B
 B
 A






bB
B
 d
 C
 a
 B
 B
 b
 b
 D
 A



Bb
B
 d
 C
 a
 B
 b
 D
 A





cC
B
 d
 C
 a
 D
 A







Cc
B
 b
 b
 D
 d
 C
 a
 D
 A




dD
B
 b
 b
 C
 a
 D
 A






Dd
b
 C
 a
 D
 A








aaD
b
 C
 A
 a
 a
 D
 A






bbD
b
 C
 A
 A









ccD
b
 C
 A
 A
 a
 a
 D






dd
b
 C
 A
 a
 D








abcD
b
 C
 D











b
 C
 D
 d
 d









b
 C
 c
 c
 D
 D
 d
 d






b
 C
 c
 c
 D
 d








b
 C
 c
 c










b
 c












b
 c
 D
 d










A
 a
 b
 c
 D
 d








A
 d












A
 a
 a
 D
 d









A
 a
 a











a


























































 

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