In late 1862 and ealry 1863 What did Grant fail to capture?

In late 1862 and early 1863, General Ulysses S. Grant failed to capture the Confederate stronghold of Vicksburg, Mississippi. Despite several attempts to take the city, including a series of battles and maneuvers, Grant's efforts were thwarted by the city's fortified defenses and the challenging terrain. It wasn't until mid-1863 that he successfully besieged Vicksburg, a victory that significantly turned the tide of the Civil War in favor of the Union.