Problem: W5-N5-L4
Solution:
 Bag1: W5
  -- 02 02 -- 
  02 02 01 -- 
  02 01 01 -- 
  01 01 -- -- 
  00 03 03 -- 
  00 00 03 03 
  -- 00 00 03 
 Bag2: N5
  -- 01 05 -- 
  01 01 05 -- 
  01 05 05 -- 
  01 05 -- -- 
  04 04 04 -- 
  00 00 04 04 
  -- 00 00 00 
 Bag3: L4
  -- 08 08 -- 
  06 06 08 -- 
  04 06 08 -- 
  04 06 -- -- 
  04 04 00 -- 
  00 00 00 07 
  -- 07 07 07 
#squares: 20
#pieces:
 Bag1: 4
 Bag2: 4
 Bag3: 5
CPU Time: 1534.598s
Optimum: yes
Board Size: 30x30
Threads: 16
Choices: 50599103
Conflicts: 26350931
Restarts: 14153
Variables: 56542
Constraints: 189229