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