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