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