Ukrainian forces launched a significant mechanized counteroffensive operation in western Zaporizhia Oblast on July 26 and appear to have broken through certain pre-prepared Russian defensive positions south of Orikhiv.
The battlefield geometry around Robotyne, as well as the force composition of the Russian elements defending there, offer important color to speculation surrounding the Ukrainian attack and gains.
https://www.understandingwar.org/backgrounder/russian-offensive-campaign-assessment-july-26-2023