Pentomino Box Packing : Solid Z

24 solutions.

1. UU.... | UX.... | UU....
   ZX.... | ZX.... | WX....
   IIIIIN | ZXLLLL | WWLVVV
   YYYYFN | ZYFFFT | ZWWFPV
   ....NN | ....PT | ....PV
   ....NT | ....PT | ....PT

2. UU.... | UX.... | UU....
   ZX.... | ZX.... | WX....
   IIIIIL | ZXPPTN | WWPPPF
   YYYYVL | ZYTTTN | ZWWFFF
   ....VL | ....TN | ....FN
   ....VL | ....VL | ....VN

3. UU.... | UX.... | UU....
   ZX.... | ZX.... | FX....
   IIIIIN | ZXYYYY | FFFYLL
   WWTTTN | ZWWTPP | ZFWTLV
   ....NN | ....PP | ....LV
   ....NV | ....PV | ....LV

4. UU.... | UX.... | UU....
   ZX.... | ZX.... | FX....
   IIIIIL | ZXNNYL | FFFNNN
   WWVVVL | ZWWYYP | ZFWTTT
   ....VL | ....YP | ....TP
   ....VL | ....YP | ....TP

5. UU.... | UX.... | UU....
   ZX.... | ZX.... | FX....
   IIIIIN | ZXLLLL | FFFVVV
   YYYYWN | ZYLWWT | ZFWWPV
   ....NN | ....PT | ....PV
   ....NT | ....PT | ....PT

6. UU.... | UF.... | UU....
   VF.... | VF.... | VF....
   IIIIIT | NNNTTT | VFNNXT
   WLLLLZ | WWYYYY | VWWXXX
   ....LZ | ....YZ | ....XZ
   ....PP | ....PP | ....PZ

7. UP.... | UP.... | UP....
   UP.... | WP.... | UX....
   IIIIIN | WWYYYY | XXXFYL
   VVVZZN | VWWTTT | VXFFFL
   ....ZN | ....TN | ....FL
   ....ZZ | ....TN | ....LL

8. UU.... | XU.... | UU....
   XZ.... | XZ.... | XY....
   IIIIIN | XZLLLL | YYYYFL
   VVVWWN | VZWWPT | VZWFFF
   ....NN | ....PT | ....PF
   ....NT | ....PT | ....PT

9. UU.... | XU.... | UU....
   XT.... | XT.... | XT....
   IIIIIF | XTYFFF | YYYYFZ
   VLLLLZ | VTNNNZ | VVVWWZ
   ....LZ | ....NN | ....WW
   ....PP | ....PP | ....PW

10. UU.... | XU.... | UU....
    XT.... | XT.... | XT....
    IIIIIW | XTNNWW | NNNWWF
    VLLLLZ | VTYYYY | VVVFFF
    ....LZ | ....YZ | ....FZ
    ....PP | ....PP | ....PZ

11. UU.... | XU.... | UU....
    XT.... | XT.... | XT....
    IIIIIW | XTNNWW | NNNWWV
    YYYYZF | LTYFFF | LLLLFV
    ....ZV | ....ZV | ....ZV
    ....PP | ....PP | ....ZP

12. UU.... | XU.... | UU....
    XT.... | XT.... | XT....
    IIIIIV | XTNNFV | NNNWWV
    YYYYZV | LTYFFF | LLLLWW
    ....ZV | ....ZF | ....ZW
    ....PP | ....PP | ....ZP

13. UU.... | XU.... | UU....
    XT.... | XT.... | XT....
    IIIIIV | XTYWWV | YYYYFV
    LLLLZV | LTNNWW | NNNFFF
    ....ZV | ....ZW | ....ZF
    ....PP | ....PP | ....ZP

14. UU.... | XU.... | UU....
    XT.... | XT.... | XT....
    IIIIIF | XTYFFF | YYYYFV
    LLLLZW | LTNNWW | NNNWWV
    ....ZV | ....ZV | ....ZV
    ....PP | ....PP | ....ZP

15. UU.... | XU.... | UU....
    XT.... | XT.... | XT....
    IIIIIW | XTNNWW | NNNWWV
    LLLLZF | LTYFFF | YYYYFV
    ....ZV | ....ZV | ....ZV
    ....PP | ....PP | ....ZP

16. UU.... | XU.... | UU....
    XT.... | XT.... | XT....
    IIIIIV | XTNNFV | NNNWWV
    LLLLZV | LTYFFF | YYYYWW
    ....ZV | ....ZF | ....ZW
    ....PP | ....PP | ....ZP

17. UU.... | FU.... | UU....
    FZ.... | FZ.... | NN....
    IIIIIY | FZLLLL | FNNNXL
    VVVWWY | VZWWTP | VZWXXX
    ....YY | ....TP | ....XP
    ....TY | ....TP | ....TP

18. PZ.... | PP.... | PP....
    VZ.... | VZ.... | VZ....
    IIIIIT | NNNTTT | VZNNXT
    WLLLLF | WWYYYY | VWWXXX
    ....LF | ....YF | ....XF
    ....UU | ....UF | ....UU

19. PU.... | PU.... | PU....
    PU.... | PX.... | LU....
    IIIIIF | XXXFFF | LLLLFN
    VVVZZW | VXYTTT | VYYYYN
    ....ZW | ....TW | ....NN
    ....ZZ | ....TW | ....NW

20. WN.... | WT.... | ZZ....
    NN.... | WT.... | WZ....
    NIIIII | TTTPPP | WZZPPV
    NFLLLL | FFFYXL | FYYYYV
    ....XV | ....XV | ....XV
    ....UU | ....XU | ....UU

21. YW.... | VW.... | LL....
    YY.... | VW.... | LW....
    YIIIII | VVVPPP | LWZPPT
    YXNNNT | XXXFFT | LXZZZT
    ....NN | ....FF | ....ZT
    ....UU | ....FU | ....UU

22. YT.... | PT.... | PT....
    YY.... | PT.... | PX....
    YIIIII | PTLLLL | XXXNNN
    YWWZZF | WWVVVL | WXNNUU
    ....ZF | ....VF | ....UF
    ....ZZ | ....VF | ....UU

23. PN.... | PP.... | PP....
    NN.... | UT.... | UX....
    NIIIII | UTTTLY | XXXVVV
    NFFWWY | UTFFLY | UXFZZV
    ....WW | ....LY | ....ZV
    ....LW | ....LY | ....ZZ

24. PP.... | PP.... | PY....
    VX.... | VY.... | VY....
    XXXNNN | IIIIIT | VYLLLL
    ZXNNWW | ZZZWWT | VYZWFL
    ....FT | ....FT | ....FT
    ....UU | ....FU | ....UU