This is MorphOS port of UChess originally ported to Amiga by Jochen Wiedmann.
I've included source code in this port (it is GPL'd) and original gfx as well.

Gfx is compressed by ancient lh.library (authors are Holger Krekel and
Olaf Barthel from 1990 btw :) but after 15 years it seems to work still.

It seems sprite routines dont work in >= 15bit screen modes. I'm not sure is
this CGX or UChess problem but until it is fixed please stick to 8bit screens.

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                 4672    4711  99.2% -lh5- 161a Sep 17 19:46 UChess.info
[generic]               217368  217368 100.0% -lh0- 49e3 Dec 15  1992 UChess/Chess256.lzw
[generic]                 1804    2864  63.0% -lh5- 07b6 Jan 15  1991 UChess/libs/lh.library
[generic]                14219   14302  99.4% -lh5- 6389 Dec 15  1992 UChess/Pieces256.lzw
[generic]                 6902   15779  43.7% -lh5- b4ca Aug  5  1994 UChess/README
[generic]                 1161    2915  39.8% -lh5- fb72 Feb 13  1994 UChess/README.UCHESST
[generic]                 1041    2026  51.4% -lh5- 314a Sep 17 20:06 UChess/source/ataks.c
[generic]                  968    2345  41.3% -lh5- c1d1 Sep 17 20:06 UChess/source/ataks.h
[generic]                  969    2346  41.3% -lh5- ebf6 Sep 17 20:06 UChess/source/ataks3.h
[generic]                  972    2350  41.4% -lh5- ca05 Sep 17 20:06 UChess/source/ataksnew.h
[generic]                  274     828  33.1% -lh5- 3c16 Sep 17 20:06 UChess/source/autoinit.c
[generic]                 3654    9959  36.7% -lh5- 509a Sep 17 20:06 UChess/source/book.c
[generic]                 1950   11763  16.6% -lh5- a247 Sep 17 20:06 UChess/source/Chess256Palette.c
[generic]                  431     953  45.2% -lh5- 12ba Sep 17 20:06 UChess/source/debug10.h
[generic]                  365     788  46.3% -lh5- 7751 Sep 17 20:06 UChess/source/debug12.h
[generic]                  336     700  48.0% -lh5- 92d3 Sep 17 20:06 UChess/source/debug13.h
[generic]                  250     443  56.4% -lh5- 5336 Sep 17 20:06 UChess/source/debug16.h
[generic]                  342     809  42.3% -lh5- 3ce4 Sep 17 20:06 UChess/source/debug256.h
[generic]                  245     423  57.9% -lh5- 101b Sep 17 20:06 UChess/source/debug4.h
[generic]                  109     154  70.8% -lh5- f61d Sep 17 20:06 UChess/source/debug40.h
[generic]                  359     611  58.8% -lh5- df85 Sep 17 20:06 UChess/source/debug41.h
[generic]                  348     689  50.5% -lh5- 23b5 Sep 17 20:06 UChess/source/debug512.h
[generic]                  152     195  77.9% -lh5- f0fa Sep 17 20:06 UChess/source/debug64.h
[generic]                  211     339  62.2% -lh5- 9ec7 Sep 17 20:06 UChess/source/debug8.h
[generic]                13515   52802  25.6% -lh5- 43d3 Sep 17 20:06 UChess/source/dspcom.c
[generic]                14823   54774  27.1% -lh5- ebda Sep 17 20:06 UChess/source/eval.c
[generic]                 2968   11029  26.9% -lh5- bd2a Sep 17 20:06 UChess/source/genmoves.c
[generic]                 8168   25989  31.4% -lh5- 4011 Sep 17 20:06 UChess/source/gnuchess.h
[generic]                   93     195  47.7% -lh5- f982 Sep 17 20:11 UChess/source/include/clib/lh_protos.h
[generic]                  162     364  44.5% -lh5- ffe6 Sep 17 20:11 UChess/source/include/fd/lh_lib.fd
[generic]                  943    2471  38.2% -lh5- 3556 Sep 17 20:11 UChess/source/include/libraries/lhlib.h
[generic]                  286     808  35.4% -lh5- 6764 Sep 17 20:11 UChess/source/include/ppcinline/lh.h
[generic]                 6377   20195  31.6% -lh5- 29ee Sep 17 20:06 UChess/source/init.c
[generic]                34582  159596  21.7% -lh5- 69d1 Sep 17 20:06 UChess/source/main.c
[generic]                  270    1836  14.7% -lh5- e8b2 Sep 17 20:06 UChess/source/make.exe
[generic]                  659    1311  50.3% -lh5- 5346 Sep 17 20:06 UChess/source/Makefile
[generic]                  260    1764  14.7% -lh5- 2ce8 Sep 17 20:06 UChess/source/makel.exe
[generic]                  294    2555  11.5% -lh5- 42ea Sep 17 20:06 UChess/source/maket.exe
[generic]                  590    2218  26.6% -lh5- b44b Sep 17 20:06 UChess/source/movemem.asm
[generic]                 7670   24342  31.5% -lh5- 76f5 Sep 17 20:06 UChess/source/nondsp.c
[generic]                  170     240  70.8% -lh5- 8c43 Sep 17 20:16 UChess/source/ReadMe.MorphOS
[generic]                  172     255  67.5% -lh5- 4cd5 Sep 17 20:06 UChess/source/scoptions
[generic]                16784   54363  30.9% -lh5- 694d Sep 17 20:06 UChess/source/search.c
[generic]                 6252   18421  33.9% -lh5- 7837 Sep 17 20:06 UChess/source/TTABLE.C
[generic]                 1485    4277  34.7% -lh5- 6c94 Sep 17 20:06 UChess/source/TTABLE.H
[generic]                 3320   11508  28.8% -lh5- 8f1f Sep 17 20:06 UChess/source/util.c
[generic]                  116     135  85.9% -lh5- 3099 Sep 17 20:06 UChess/source/version.h
[generic]                 1905   15506  12.3% -lh5- 8709 Sep 17 20:06 UChess/source/Windows.h
[generic]               133841  335332  39.9% -lh5- 90f0 Sep 17 16:39 UChess/UChess
[generic]                13355   46257  28.9% -lh5- a330 Mar 27  1994 UChess/UChess.book
[generic]                 3445    7355  46.8% -lh5- 3706 Jan 17  1994 UChess/UChess.doc
[generic]                 3377    3377 100.0% -lh0- e6b9 Sep 17 19:44 UChess/UChess.info
[generic]                 2549    6794  37.5% -lh5- a970 May  4  1994 UChess/UChess.lang
[generic]                 3941   11823  33.3% -lh5- 53dc May 28  1994 UChess/uchessblack.book
[generic]                  424     714  59.4% -lh5- b00b Sep 17 20:21 UChess/UChessMOS.readme
[generic]                 3075    9615  32.0% -lh5- 4906 Mar 27  1994 UChess/uchesswhite.book
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total        56 files  544973 1183881  46.0%            Sep 18 02:23