  We report discovery of a new iridate family K$_x$Ir$_y$O$_2$ with depleted
triangular lattice planes made up of edge sharing IrO$_6$ octahedra separated
by K planes. Such a material interpolates between the triangular and honeycomb
lattices and is a new playground for Kitaev physics. The materials are Mott
insulators with $y = 1 - x/4$. Physical property measurements for the $x
\approx 0.85$ material are reported. Using magnetic susceptibility $\chi$
versus temperature $T$ measurements we find $S_{eff} = 1/2$ moments interacting
strongly with a Weiss temperature $\theta \approx - 180$~K and no magnetic
order or spin freezing down to $T =<EMAIL_ADDRESS>Heat capacity shows a broad
maximum around $30$~K which is insensitive to magnetic fields and a $T$-linear
low temperature behaviour with $\gamma \sim 10$~mJ/mol~K$^2$. These results are
consistent with a gapless QSL state in K$_{0.85}$Ir$_{0.79}$O$_2$.
