break-the-pieces custom figure assert

['+------------+\n|            |\n| +-------+  |\n| |       |  |\n| |       |  |\n| |       |  |\n| +-------+  |\n|            |\n|            |\n|            |\n|            |\n|            |\n+------------+', '+--+      +--+\n|  |      |  |\n|  |      |  |\n|  +------+  |\n|            |\n|    +-------+\n|    |\n|    |\n|    +-------+\n|            |\n|            |\n|            |\n+------------+', '+-------+\n|       |\n|       |\n|       |\n+-------+', '+-------+\n|       |\n|       |\n+-------+', '+----+\n|    |\n|    |\n|    |\n+----+', '+---+\n|   |\n|   |\n|   |\n+---+', '+--+\n|  |\n|  +------------------+\n|                     |\n+---------------------+', '+-----+\n|     |\n+-----+', '+------------+\n|            |\n+------------+', '    +----+\n    |    |\n    |    |\n+---+    |\n|        |\n+--------+', '+-------------------------+\n|                         |\n| +----+                  |\n| |    |     +------------+\n| |    |     |\n+-+    +-----+']