Here are all the puzzles solutions in Kusari Kingdom Playtest. Thanks alphabet for solving the last levels.
Level 1-1

Level 1-2

Level 1-3

Level 1-4

Level 1-5

Level 1-6

Level 1-7

Level 1-8

Level 1-9

Level 2-1

Level 2-2

Level 2-3

Level 2-4

Level 2-5

Thanks alphabet for the solution!
Level 2-6
Level 2-7

Thanks alphabet for the solution!
Level 2-8

Thanks alphabet for the solution!
Thanks to Klumb3r for his great guide, all credit to his effort. you can also read the original guide from Steam Community. enjoy the game.