Siege of Érsekújvár (1663)
1663 siege
The Siege of Érsekújvár, also known as the Siege of Uyvar or the Siege of Neuhäusel, occurred in 1663 when Grand Vizier Fazil Ahmed Pasha, who led the Ottomans, invaded Habsburg Hungary and captured the Hungarian fortress at Érsekújvár (Hungarian: Érsekújvár, German: Neuhäus[e]l, Latin: Novum Castrum, Turkish: Uyvar, modern Nové Zámky in southern Slovakia).
Background
In the first half of the 17th century, a stalemate was reached between the Ottoman Empire and Austrian monarchy. After many peaceful years, however, border clashes began. John Kemény, the Habsburg candidate to the throne of Transylvania, was trying to defeat the Ottoman vassal Michael I Apafi. Although Apafi won the throne with Ottoman support, the Austrians captured the forts of Kolozsvár (now Cluj-Napoca, Romania) and Székelyhíd (now Săcueni, Romania). They also built the fort of Zrínyiújvár (Croatian Novi Zrin) facing the Ottoman fort of Kanije (now Nagykanizsa in Hungary). Meanwhile, the Ottoman Army was marching to Dalmatia in the scope of Cretan War (1645-1669) against Venice. Ottoman Sultan Mehmet IV gave the priority to the Austrian front, and the army changed its course.
Peace talks
The commander of the Ottoman army was Grand Vizier Fazıl Ahmet Pasha (a member of Köprülü family). While he was marching to the Austrian front, the Austrians appealed for peace.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Sep 19, 2026. The linked authority identifier is Q1470965. Authority coordinates are 47.983, 18.167. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1663, 1645 and 1669.
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