  We analyze multicolor light curves of six totally eclipsing, short-period W
UMa binaries and derive, for the first time, their orbital and stellar
parameters. The mass ratios are established robustly through an automated
q-search procedure that performs a heuristic survey of the parameter space.
Five stars belong to the W and one to the A subtype. The mass ratios range from
0.23 to 0.51 and the fillouts from 10 to 15%. We estimate the ages and discuss
the evolutionary status of these objects in comparison with a sample of other
short-period W UMa binaries from the literature.
