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"Qty"(Quantity) refers to the number of clusters of black (filled) squares in a single row or column, separated by at least one empty square (X). Each cluster must consist of one or more consecutive filled squares.

"Max"(Max Size) refers to the size of the largest block in the row or column that is, the number of consecutive filled squares in the longest continuous cluster.

For example, there are 2 filled blocks above. Their sizes are 1 and 2 respectively, so the maximum size is 2.
  • Since the first row has 1 block and a maximum size of 4, fill in all 4 squares.
  • The first column has 1 block with a maximum size of 1, and since it's already filled, the remaining squares should be marked with X.
  • The first row has 1 block with a maximum size of 5, so all the filled squares must be connected as one continuous block.
  • The first column has 3 blocks with a maximum size of 1, so there must be X marks between each filled square.
  • The fourth column has 1 block with a maximum size of 3, so you can fill three connected squares.
  • Now, let's enjoy the puzzle!