! EXAM01.
!    1-A-1 CH2    RHF geometry optimization using GAMESS.
!
!    Although internal coordinates are used (COORD=ZMAT),
!    the optimization is done in Cartesian space (NZVAR=0).
!    This run uses a criterion (OPTTOL) on the gradient
!    which is tighter than is normally used.
!
!    This job tests the sp integral module, the RHF module,
!    and the geometry optimization module.
!
!    Using the default search METHOD=STANDARD,
!    FINAL E= -37.2322678015, 8 iters, RMS grad= .0264308
!    FINAL E= -37.2308175306, 7 iters, RMS grad= .0320881
!    FINAL E= -37.2375723427, 7 iters, RMS grad= .0056557
!    FINAL E= -37.2379944433, 6 iters, RMS grad= .0017901
!    FINAL E= -37.2380387836, 8 iters, RMS grad= .0003391
!    FINAL E= -37.2380397697, 6 iters, RMS grad= .0000030
!
 $CONTRL SCFTYP=RHF MAXIT=1 RUNTYP=ENERGY COORD=ZMT NZVAR=0 $END
 $SYSTEM TIMLIM=2 MEMORY=100000 $END
 $STATPT OPTTOL=1.0E-5  $END
 $BASIS  GBASIS=STO NGAUSS=2 $END
 $GUESS  GUESS=HUCKEL $END
 $DATA
Methylene...1-A-1 state...RHF/STO-2G
Cnv  2

C
H  1 rCH
H  1 rCH  2 aHCH

rCH=1.09
aHCH=110.0
 $END