PUZZLE 1-2-3

3 PUZZLES IN ONE

Thanks for Frank Worrell (2010) model.
Solution there :
https://www.thingiverse.com/thing:2946766

9 pieces easy print but very hard to solve !
G, H, I are congruent.
Size 7×5 units each piece
Goal 7×7×7
Holes 36

On the picture i solved the cube in one color.
I'll post the hints soon.

For more challenge :

VERSION 1 CDF colored = 1 Solutions to get the goal
VERSION 2 ABD colored = 2 Solutions to get the goal
VERSION 3 DEI colored = 3 Solutions t