Regular Expression Puzzle Solver Output
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$ ghc recross.hs && ./recross | |
[2 of 2] Compiling Main ( recross.hs, recross.o ) | |
Linking recross ... | |
Iteration 0 | |
. . . . . . . | |
. . . . . . . . | |
. . . . . . . . . | |
. . . . . . . . . . | |
. . . . . . . . . . . | |
. . . . . . . . . . . . | |
. . . . . . . . . . . . . | |
. . . . . . . . . . . . | |
. . . . . . . . . . . | |
. . . . . . . . . . | |
. . . . . . . . . | |
. . . . . . . . | |
. . . . . . . | |
Iteration 1 | |
* * * * E * * | |
M * * * * * * * | |
* M * * . * . * H | |
H * M * * * * * * H | |
H * * M . * * * X D C | |
* * * * M * * * H D * C | |
* * * * * M . . C R . R G | |
* M * M * * * R * R * * | |
* O . * . * . . X R N | |
* M * M * * * E * R | |
P O . * . * X * V | |
* * * * * M * * | |
* * F * M C * | |
Iteration 2 | |
* E C * E * * | |
M L R C R L * C | |
* M X O X R X M H | |
H E M H E * H E * H | |
H H X M I R H H X D C | |
* * R * M * * H H D D C | |
* * X M C M . E C R X R G | |
A M * M M C M R C R C R | |
H O X M . C . * X R N | |
E M N M N C * E C R | |
P O . O . C X R V | |
H I * * C M * O | |
N D F M M C H | |
Iteration 3 | |
S E C U E M C | |
M L R C R L M C | |
M M X O X R X M H | |
H E M H E M H E M H | |
H H X M I R H H X D C | |
H P R R M I O H H D D C | |
S * X M C M I E C R X R G | |
A M * M M C M R C R C R | |
H O X M M C C O X R N | |
E M N M N C R E C R | |
P O . O X C X R V | |
H I * M C M R O | |
N D F M M C H | |
Iteration 4 | |
S E C U E M C | |
M L R C R L M C | |
M M X O X R X M H | |
H E M H E M H E M H | |
H H X M I R H H X D C | |
H P R R M I O H H D D C | |
S T X M C M I E C R X R G | |
A M A M M C M R C R C R | |
H O X M M C C O X R N | |
E M N M N C R E C R | |
P O X O X C X R V | |
H I O M C M R O | |
N D F M M C H | |
Done! |
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There is a secret message in the answer:
Taking the conspicuous ring matching
/(.X)*/
and passing it throughsed 's_\(.\)X_\1_g'
gets you "ARMORED RECON" (space inserted for clarity).