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