The Ottomans achieved success in 1600, when, following a battle, the defenders of Kanizsa were forced to give up the castle primarily due to a shortage of men and supplies.

But while the Habsburgs made fruitless attempts to retake Kanizsa, the Duke Mercoeur, having led the Turks to believe that he was getting ready to attack Buda, suddenly materialized under Székesfehérvár and drove the defenders into capitulation after ten days.

[1] There was much fear following Székesfehérvár's fall, particularly in Vienna and Prague, where people thought Hassan Pasha would now turn against the Pope and launch an invasion of Austria from there.

But the Grand Vizier moved part of his army to raid the palace, ordered 4,000 men to the occupied castle, and camped the remainder between Székesfehérvár and Buda.

[2] Archduke Matthias convened a council of war in the Győr camp on September 4, ostensibly in response to the field marshal, Christof von Russwurm.

[3] Field Marshal Russwurm first made the decision to attack the bridge that connected Pest and Buda.

[2][3][1] After a fruitless 20-day siege, Hassan Pasha withdrew to the area around Tolna, where he assembled the 6,000 reinforcements he had ordered from Bosnia, realizing he could not capture Pest with such a small force.

[2] Additionally, during the siege, the defenders launched successful sorties that have only been repulsed by suffering significant losses on the Habsburg side.