Siege of Zamość was part of The Deluge, a series of campaigns in the Polish–Lithuanian Commonwealth, that took place in early 1656.

According to a legend, when Swedish representatives came to the town and proposed the capitulation of the fortress, Jan 'Sobiepan' Zamoyski answered: "I am the Lord for myself and I will not give Zamość to the Swedes".

[1] The Swedes began with an artillery barrage, but due to lack of heavy guns, it was not successful.

Within a few days, Charles X Gustav realized that capturing Zamość, whose fortifications had been strengthened since 1648, was impossible, and on March 1, the Swedes withdrew.

[2] Next year, the Transylvanian army under George II Rákóczi appeared near Zamość, but it did not even try to capture the mighty fortress.