## 1.5: Battleships In Space!

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"You know," a nervous, stammering fellow told Dorothy, "you're not the only film character to ever attend MIT. I myself hail from MIT and I was able to stave off an alien invasion with my trusty Powerbook!"
```
For centuries, aliens have been floating over our countryside, spying
intently on the letters beneath them, occasionally replacing one of
our letters with one of their insidious "crop-circle" hieroglyphics.
(Well, except for "Z"; they don't seem to be too interested in "Z".)

We now believe that they are readying their forces for an all-out
strike on several continents, devastating our way of writing and
confusing schoolchildren of all nations.  Only by finding every hidden
ship and cracking their secret code will you be able to preserve our
precious alphabet!

A single 4x1x1 alien battleship, two 3x1x1 alien cruisers, three 2x1x1
alien destroyers, and four 1x1x1 alien surveillance pods are all
hiding out in each section of space below.  Each segment of a ship
occupies a single cell.  Ships do not touch each other, even
diagonally.  The numbers along the back panels reveal the total number
of ship segments in each row.

| 0  1  0  0  4                 | 1  0  1  1  1
1 |                             3 |
1   |                           1   |
1     | 3  1  1  0  0           0     | 0  1  0  2  0
1     1 |                       0     0 |
1     0   |                     0     0   |
1     | 0  1  0  1  0           0     | 1  2  0  1  0
1     1 |                       1     0 |
2     1   |                     2     1   |
0     | 0  1  0  1  0           2     | 0  1  0  1  0
0     0 |                       0     0 |
0     0   |                     1     0   |
0     | 2  1  2  0  1           0     | 3  1  1  0  2
2     3 |_______________        1     2 |_______________
0     2  ,'                     1     3  ,'
0  ,'  A  B  C  D  E            1  ,'  A  B  C  D  E
1  ,'  F  G  H  I  J            0  ,'  F  G  H  I  J
0  ,'  K  L  M  N  O            1  ,'  K  L  M  N  O
,'  P  Q  R  S  T               ,'  P  Q  R  S  T
'  U  V  W  X  Y                '  U  V  W  X  Y

| 1  2  1  1  0                 | 3  1  0  1  1
1 |                             1 |
0   |                           0   |
1     | 1  0  0  1  0           1     | 1  0  0  1  0
0     1 |                       0     1 |
3     1   |                     4     1   |
0     | 2  2  0  1  0           0     | 4  0  0  1  0
0     1 |                       0     1 |
0     0   |                     0     0   |
1     | 1  1  0  2  0           1     | 1  0  1  1  1
1     2 |                       2     4 |
2     1   |                     1     0   |
1     | 0  2  1  0  1           0     | 0  2  0  1  0
0     0 |_______________        0     0 |_______________
0     0  ,'                     0     0  ,'
1  ,'  A  B  C  D  E            1  ,'  A  B  C  D  E
1  ,'  F  G  H  I  J            2  ,'  F  G  H  I  J
2  ,'  K  L  M  N  O            0  ,'  K  L  M  N  O
,'  P  Q  R  S  T               ,'  P  Q  R  S  T
'  U  V  W  X  Y                '  U  V  W  X  Y

| 0  1  0  1  2                 | 0  2  0  4  0
1 |                             0 |
0   |                           1   |
1     | 0  1  0  1  2           2     | 0  1  0  0  0
0     1 |                       1     0 |
2     1   |                     2     0   |
1     | 1  0  1  1  2           1     | 2  1  0  1  0
0     1 |                       0     2 |
1     0   |                     0     1   |
1     | 2  1  1  0  1           0     | 2  0  0  1  0
0     2 |                       0     0 |
3     0   |                     1     0   |
1     | 0  0  2  0  0           1     | 3  0  1  1  1
0     0 |_______________        1     1 |_______________
2     0  ,'                     1     3  ,'
0  ,'  A  B  C  D  E            1  ,'  A  B  C  D  E
1  ,'  F  G  H  I  J            0  ,'  F  G  H  I  J
1  ,'  K  L  M  N  O            1  ,'  K  L  M  N  O
,'  P  Q  R  S  T               ,'  P  Q  R  S  T
'  U  V  W  X  Y                '  U  V  W  X  Y

```