+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|     "     "     |     "     "     |     "     "     |
|     "     "  7  |     "     "     |  2  "     "     |
|     "     "     |     "     "     |     "     "     |
+-----+=====+-----+-----+-----+-----+-----+=====+-----+
|     |     "     |     "     "     |     "     |     |
|     |  5  "     |     "     "     |     "  5  |     |
|     |     "     |     "     "     |     "     |     |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|     |     "     |     "     "     |     "     |     |
|  2  |     "     |  6  "     "  8  |     "     |  7  |
|     |     "     |     "     "     |     "     |     |
+-----+=====+-----+-----+-----+-----+-----+=====+-----+
|     "     "     |     "     "     |     "     "     |
|     "     "  5  |  1  "     "  4  |  6  "     "     |
|     "     "     |     "     "     |     "     "     |
+-----+=====+=====+-----+-----+-----+=====+=====+-----+
|     |     |     "     "     "     "     |     |     |
|     |  1  |  9  "     "     "     "     |  8  |  9  |
|     |     |     "     "     "     "     |     |     |
+=====+=====+=====+=====+=====+=====+=====+=====+=====+
|     |     |     |     |     |     |     |     |     |
| -   | -   | -   | -   | -   | -   | -   | -   | -   |
|     |     |     |     |     |     |     |     |     |
+     +     +     +     +     +     +     +     +     +
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| -   | -   | -   | -   | -   | -   | -   | -   | -   |
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+-----+-----+-----+-----+-----+-----+-----+-----+-----+
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| -   | -   | -   | -   | -   | -   | -   | -   | -   |
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+-----+-----+-----+-----+-----+-----+-----+-----+-----+
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| -   | -   | -   | -   | -   | -   | -   | -   | -   |
|     |     |     |     |     |     |     |     |     |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+