2 Kings 18:10

and at the end of three years he took it. In the sixth year of Hezekiah , which was the ninth year of Hoshea king of Israel , Samaria was taken .

At the end of three years the Assyrians took it. So Samaria was captured in Hezekiah`s sixth year, which was the ninth year of Hoshea king of Israel.

And at the end of three years they took it: even in the sixth year of Hezekiah, that is the ninth year of Hoshea king of Israel, Samaria was taken.