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