The Turkish Sultan appointed Yuri Khmelnitsky Hetman of the Right-bank Ukraine, who had been the Sultan's prisoner at that time. In July 1677, the Sultan ordered his army  under the command of Ibrahim Pasha to advance towards Chyhyryn. July 30 1677 at the fortress appeared advanced detachments, and on August 3 - the main forces of the Turks. Samoilovich and Grigory Romodanovsky's forces joined on August 10, and only on August 24 they crossed the Sula River on the way to Chigirin. On August 26-27, a skirmish between their and Ottoman troops removed Ottoman observation posts and allowed the rest of the Muscovite and Ukrainian forces to cross the river under the cover of artillery fire. Turkish attempts to drop back into the river the first crossing detachment under the command of Major-General Shepelev were repulsed. Muscovite and Ukrainian cavalry attacked and overwhelmed Turkish-Tatar army camp, on the August 28, inflicting heavy casualties. The following day, Ibrahim Pasha lifted the siege of Chyhyryn and hastily retreated to the Inhul River and beyond. Samoilovich and Grigory Romodanovsky relieved Chyhyryn on September 5. The Ottoman Army had lost 20,000 men and Ibrahim was imprisoned upon his return to Constantinople and Crimean Khan Selim I Giray lost his throne.

Question: How many days was it from when advanced detachments appeared at the fortress and when Romodanovsky's forces joined?
Answer: 11

Question: How many days was it from when advanced detachments appeared at the fortress and when the main forces of the Turks appeared?
Answer: 4

Question: How many days was it from when Romodanovsky's forces joined and the Sula River was crossed?
Answer: 14

Question: How many days was it from when when the main forces of the Turks appeared at the fortress and when the Sula River was crossed?
Answer: 21

Question: How many days was it from when advanced detachements appeared at the fortress and when the Sula River was crossed?
Answer: 25

Question: Approximately how many months did it take the Sultan's army to get to Chyhyryn?
Answer: 2

Question: Which happened first, Ottomoan observation posts being removed or Paha retreating to the Inhul River?
Answer: removed Ottoman observation post

Question: How many days passed between the appearance of advanced detachments and the arrival of the main forces of the Turks?
Answer: 4

Question: How many days after the main Turk forces arrived at the fortress did Samoilovich and Grigory Romodanovsky's forces join them?
Answer: 7

Question: Where did Samoilovich and Grigory Romodanovsky's forces go first, the fortress or the Sula River?
Answer: the fortress

Question: How many days after the skirmish between Samoilovich and Grigory Romodanovsky's forces and Ottoman troops was the Turkish-Tatar army camp attacked?
Answer: 1

Question: How many days after the attack on the Turkish-Tatar army camp did Ibrahim Pasha lift the siege of Chyhyryn?
Answer: 1

Question: Where did Ibrahim Pasha go first, the Inhul River or Constantinople?
Answer: Inhul River

Question: What date did Ibrahim Pasha lift the siege of Chyhyryn and retreat to the Inhul River?

Question: How many weeks did it take for Samoilvich and Grigory Romodanovsky's forces to cross the Sula River after joining?
Answer: 2