+-----+-----+-----+-----+-----+-----+-----+-----+-----+
|     |     |     |     "     |     |     |     "     |
|  1  |     |     |     "     |     |     |     "  9  |
|     |     |     |     "     |     |     |     "     |
+-----+-----+-----+-----+-----+-----+-----+-----+=====+
|     |     |     |     "     |     |     |     |     |
|     |     |     |     "     |  1  |     |     |  6  |
|     |     |     |     "     |     |     |     |     |
+=====+=====+=====+=====+=====+=====+=====+=====+=====+
|     |     |     |     "     |     |     |     "     |
|     |     |  6  |     "     |     |     |     "  3  |
|     |     |     |     "     |     |     |     "     |
+-----+-----+-----+-----+-----+-----+-----+-----+=====+
|     |     |     |     "     |     |     |     |     |
|     |     |     |     "     |     |     |  8  |  7  |
|     |     |     |     "     |     |     |     |     |
+=====+=====+=====+=====+=====+=====+=====+=====+=====+
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|     |     |     |     "  4  |     |     |     |  1  |
|     |     |     |     "     |     |     |     |     |
+-----+-----+-----+-----+-----+-----+-----+-----+=====+
|     |     |     |     "     |     |     |     "     |
|     |  5  |     |     "     |     |     |     "  8  |
|     |     |     |     "     |     |     |     "     |
+=====+=====+=====+=====+=====+=====+=====+=====+=====+
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|     |     |     |     "     |     |  4  |     |  5  |
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+-----+-----+-----+-----+-----+-----+-----+-----+=====+
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|     |     |     |  2  "     |     |     |     "  7  |
|     |     |     |     "     |     |     |     "     |
+=====+=====+=====+=====+=====+=====+=====+=====+=====+
|     |     |     |     |     |     |     |     |     |
| -   | -   | -   | -   | -   | -   | -   | -   | -   |
|     |     |     |     |     |     |     |     |     |
+-----+-----+-----+-----+-----+-----+-----+-----+-----+