Well I think my code is working. but did I miss something, why do i only have 4 test cases?

Code:

Shuttle Puzzle solution (n=1) :
W B
WB
BW
B W

Shuttle Puzzle solution (n=2) :
WW BB
WWB B
W BWB
WBWB
BW WB
BWBW
BWB W
B BWW
BB WW

Shuttle Puzzle solution (n=3) :
WWW BBB
WWWB BB
WW BWBB
W WBWBB
WBW WBB
WBWBW B
WBWBWB
WBWB BW
WB BWBW
BWBWBW
B WBWBW
BBW WBW
BBWBW W
BBWB WW
BB BWWW
BBB WWW

Shuttle Puzzle solution (n=4) :
WWWW BBBB
WWWWB BBB
WWW BWBBB
WW WBWBBB
WWBW WBBB
WWBWBW BB
WWBWBWB B
WWBWB BWB
WWB BWBWB
W BWBWBWB
WBWBWBWB
BW WBWBWB
BWBW WBWB
BWBWBW WB
BWBWBWBW
BWBWBWB W
BWBWB BWW
BWB BWBWW
B BWBWBWW
BB WBWBWW
BBBW WBWW
BBBWBW WW
BBBWB WWW
BBB BWWWW
BBBB WWWW

Shuttle Puzzle passed all 4 tests (100% correct)

KiXtart
KiXtart Version = 4.51
KiXforms Version =
KiXGolf Script = kixgolf_shuttle.kix

Computer
OS = Windows 2000 Professional
CPU = Intel Pentium Model 13
Speed = 1698 MHz
Memory = 502 MB

KiXGolf Scoring Engine
Scoring Engine = 3.0.3

KiXtart Golf Score
Tournament = KiXtart Golf: Shuttle Puzzle
Processing Start = 2006/09/09 23:22:02.958
Processing End = 2006/09/09 23:22:03.008
Duration = 0000/00/00 00:00:00.050
KiXGolf Score = 564