Problem: Q4-N5
Solution:
 Bag1: Q4
  -- 01 01 -- -- -- 
  -- 01 01 03 03 -- 
  00 00 -- 03 03 -- 
  00 00 02 02 04 04 
  -- -- 02 02 04 04 
 Bag2: N5
  -- 00 06 -- -- -- 
  -- 00 06 06 07 -- 
  00 00 -- 06 07 -- 
  00 05 05 06 07 07 
  -- -- 05 05 05 07 
#squares: 20
#pieces:
 Bag1: 5
 Bag2: 4
CPU Time: 5.201s
Optimum: yes
Board Size: 30x30
Threads: 16
Choices: 535386
Conflicts: 170372
Restarts: 280
Variables: 25298
Constraints: 84613