  We present unique NUV observations of a well-observed X-class flare from NOAA
12087 obtained at Ond\v{r}ejov Observatory. The flare shows a strong
white-light continuum but no detectable emission in the higher Balmer and Lyman
lines. RHESSI and Fermi observations indicate an extremely hard X-ray spectrum
and gamma-ray emission. We use the RADYN radiative hydrodynamic code to perform
two type of simulations. One where an energy of 3 x 10^11 erg/cm^2/s is
deposited by an electron beam with a spectral index of ~3 and a second where
the same energy is applied directly to the photosphere. The combination of
observations and simulations allow us to conclude that the white-light emission
and the suppression or complete lack of hydrogen emission lines is best
explained by a model where the dominant energy deposition layer is located in
the lower layers of the solar atmosphere rather than the chromosphere.
