8th Move description

​It is very interesting game with unique gameplay that I thought up . I spend about two weeks in writing code, and now I can show It to you.

Rules are very simple:
Block gets destroyed when amount of blocks in row or in column is the same as the number on block.
Block 8 turns into 7 when semi-detached block was destroyed.
Block 7 turns into random block from 1 to 6 when semi-detached block was destroyed.
Block 9 makes semi-detached block 8 turns to 7, 7 to random, and destroys semi-detached blocks.