#164 Parity Heyawake

Shade some cells so that no two shaded cells are orthogonally adjacent and the remaining unshaded cells form one orthogonally connected area. A line of consecutive unshaded cells may not cross more than one bold border. Regions marked with E must have an even number of shaded cells in it. Regions marked with O must have an odd number of shaded cells in it

Solve on Penpa+ https://tinyurl.com/yck3jmxm