Chest319, is the best program for searching for mate in Chess. It comes with full source code.

Doc
Release
EPD
Debug
Templates
Examples
MEMOS
mklcltyp.dep
Reorg
achest.c
dchest.c
i.x.ktk
Examples\i.x.ktk
version.c
asw.h
thorak.h
initdefs.h
mkinitdefs.c
MKINITDE.C
i.x.shm
Examples\i.x.shm
answer.h
mklcltyp.dsw
chest319.dsw
mkinited.c
str.h
COPYRIGHT
COPYRIGH
solopt.h
mlsubr.h
spana.h
cnt.c
dump.h
sysdep.c
statsupp.h
input.h
move_gen.h
analyse.h
HMM2.EPD
EPD\HMm2.epd
fac.h
MEMO.NOR
....S\MEMO.norm
MEMO.norm
mgsubr.h
stats.h
mate2.h
HMM4.EPD
EPD\HMm4.epd
lcltyp.h
move.h
README_QUICK
README_Q
lang.h
sysdep.h
cnt.h
README
PUBfiles
str.c
xatt.h
timing.h
SIZES.C
asw.c
bsd.h
bastyp.h
solution.h
mksupp.c
output.h
lang.c
stats.c
epdio.h
EPD\HMm3.epd
HMM3.EPD
TODO
interface.h
INTERFAC.H
acm.h
MEMO.cold
MEMO.COL
....S\MEMO.cold
MAKEFILE.SIM
Templates\Makefile.simple
Makefile.simple
allchest.c
trace.h
basdef.h
cost.h
MEMO.FAC
....S\MEMO.fac
MEMO.NOM
....S\MEMO.nomove
MEMO.nomove
....S\MEMO.maxdep
MEMO.MAX
MEMO.maxdep
mklcltyp.dsp
dump.c
refu.h
acmsize.h
mklcltyp.mak

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