Bloxorz game and its Keys

one of the fantastic and mind-blowing puzzle game I have played and its keys are here for you to try any level. Very interesting and only one solution to each level.

http://www.hoodamath.com/games/bloxorz.php

1. 189493
2. 448106
3. 210362
4. 098598
5. 000241
6. 284933
7. 119785
8. 543019
9. 728724
10. 937319
11. 293486
12. 088198
13. 250453
14. 426329
15. 660141
16. 769721
17. 691859
18. 280351
19. 138620
20. 879021
21. 614955