Problem: {I4:L4:N4:Q4:T4}-{I3:L3}
Solution:
 Bag1: I4,L4,N4,Q4,T4
  03 03 02 05 05 05 
  03 03 02 02 05 04 
  01 01 01 02 04 04 
  01 00 00 00 00 04 
 Bag2: I3,L3
  07 08 09 0b 0c 0c 
  07 08 09 0b 0b 0c 
  07 08 09 0a 0a 0a 
  01 01 01 06 06 06 
#squares: 24
#pieces:
 Bag1: 6
  I4: 1
  L4: 1
  N4: 1
  Q4: 1
  T4: 2
 Bag2: 8
  I3: 6
  L3: 2
CPU Time: 7.405s
Optimum: yes
Board Size: 6x4
Threads: 8