The Polish-Swedish War, also known as Karl XII's invasion of Poland or the Polish front of the Great Northern War, was a conflict in eastern Europe overshadowed by the ongoing Great Northern War fought between the Swedish Empire against the Russian Empire, Denmark-Norway, Saxony and the Polish-Lithuanian Commonwealth.
 The Polish front was a major part of the greater conflict, and it included some decisive battles in favor of the Swedes that contributed to the length of the war (21 years).
This indecisive battle took place on 4 October 1710, during the Great Northern War, in Køge Bay, just south of Copenhagen.
 Denmark had 26 ships of the line and 5 frigates with 1808 guns, and Sweden had 21 ships of the line and several frigates with 1512 guns.
 The Danish ship "Dannebroge" exploded and of and the 550-man crew only 9 survived.
 The Swedish ships "Tre Kronor" and "Prinsessan Ulrika Eleonora" ran aground.
 Because of the weather the battle could not continue.
 However, the Swedish fleet managed to sink and capture a Danish convoy of transport ships that were supposed to embark a Russian invasion force in Danzig.
 The action in Køge Bugt checked those Russian invasion plans of Sweden.
The Action of 22 July 1713 was a naval battle between Sweden and the Tsardom of Russia which took place on 22 July 1713 near the shallows of Kalbådagrund.
 It was an indecisive engagement, part of the Great Northern War.
From 1611 to 1721, Sweden was a European great power, becoming a dominant faction in the quest for control of the Baltic Sea and a formidable military power.
 During this period, known as "Stormaktstiden" (Swedish: ""The Great Power Era"" ), the Swedish Empire held a territory more than twice the size of its modern borders and one of the most successful military forces at the time, proving itself on numerous occasions on battlefields such as Wallhof, Narva and Düna.
 The military of the Swedish empire is commonly (and wrongfully) recognized only as the Caroleans, which were in fact not in service until the late 17th century under Karl XI and his successor.
 The Swedish Empire and its modern military force was founded by Gustavus Adolphus, who inherited the throne in 1611 at age 17.
 He immediately reformed the common European military based on mercenaries to a professional national army.
 However, before completing his vision of conquering the Holy Roman Empire, the warrior king was killed in action in 1632.
 His daughter and successor did little to improve Sweden's military position and abdicated early, providing the Swedish Empire with a more warlike ruler.
 Karl X Gustav was only king for 5 years, but conquered large amounts of territory that still belong to Sweden today (including Blekinge, Bohuslän, Skåne and Halland).
 His son Karl XI would further strengthen the army by introducing the Caroleans, which were also used by Karl XII in the Great Northern War.
The Great Northern War (1700–21) was a conflict in which a coalition led by the Tsardom of Russia successfully contested the supremacy of the Swedish Empire in Central, Northern, and Eastern Europe.
 The initial leaders of the anti-Swedish alliance were Peter I of Russia, Frederick IV of Denmark–Norway and Augustus II the Strong of Saxony-Poland.
 Frederick IV and Augustus II were defeated by Sweden, under Charles XII, and forced out of the alliance in 1700 and 1706 respectively, but rejoined it in 1709 after the defeat of Charles XII at the Battle of Poltava.
 George I of Great Britain and of Brunswick-Lüneburg (Hanover) joined the coalition in 1714 for Hanover and in 1717 for Britain, and Frederick William I of Brandenburg-Prussia joined it in 1715.
The Russo-Polish War of 1654–1667, also called Thirteen Years' War, First Northern War, or the War for Ukraine, was a major conflict between Tsardom of Russia and the Polish-Lithuanian Commonwealth.
 Between 1655 and 1660, the Second Northern War was also fought in the Polish-Lithuanian Commonwealth, thus this period became known in Poland as "The Deluge".
 The Commonwealth initially suffered defeats, but regained its ground and won most of the battles.
 However its plundered economy was not able to fund the long conflict.
 Facing internal crisis and civil war, Poland was forced to sign a truce.
 The war ended with significant Russian territorial gains and marked the beginning of the rise of Russia as a great power in Eastern Europe.
The Battle of Krasnokutsk–Gorodnoye took place on February 20–22, 1709 (Gregorian calendar), in the Swedish campaign of Russia during the Great Northern War 1700-1721.
 The Swedish troops were directly led by Charles XII King of Sweden who persecuted a force of Russians commanded by Karl Evald von Rönne from the minor battle of Krasnokutsk to the town Gorodnoye where a new battle took place.
 The Swedes were victorious but cancelled their offensive when the night fell.
The Siege of Stralsund was a battle during the Great Northern War.
 The Swedish Empire defended her Swedish Pomeranian port of Stralsund against a coalition of Denmark-Norway, the Electorate of Saxony and the Tsardom of Russia, which was joined by the Kingdom of Prussia during the siege.
The Battle of Varja took place on November 7, 1700 close to at the villages of Varja and Aa, in the Swedish Empire during the Estonian campaign of the first year in the Great Northern War.
 A Swedish force consisting of 800 men under the command of generals Georg Reinhold Patkul and Hans Henrik von Tiesenhausen were sent out from Rakvere to secure the road at which the main army under Charles XII of Sweden were going in order to relief the city of Narva which had been besieged by the Russians for a while.
 At the villages of Varja and Aa they surprised a Russian force of 2,000 men from Boris Sheremetev's detachment gathering supplies for their army at Narva.
 The Russians were caught completely off guard and subsequently took cover within the houses to avoid the Swedish onslaught, these were however, soon put on fire by the Swedes, an action resulting in 1,500 Russians killed, wounded or captured to about 200 Swedes with only 500 Russians who managed to escape.
 Later during the day, as the Swedes were looting the Russian supplies, a larger force of 3,000 men under Sheremetev himself, arrived and in turn surprised the Swedes who were driven off with a loss of 80 men among them, the Swedish commander Georg Reinhold Patkul who was captured during the retreat.
 The Russians here received important information about the approach of the Swedish main army under Charles, who arrived at the two villages about two weeks later.
 Sheremetev would later face the Swedish vanguard at Pühhajoggi, however after initial skirmishes he was soon driven off leading to the battle of Narva where the Russian main army saw itself decisively defeated by the Swedish army.
The Battle of Molyatichi (Swedish: Malatitze), also known as the Battle of Dobroye, took place on August 31, 1708 at Molyatichi (present-day Belarus near the Russian border) during the Great Northern War.
 The Russian army of Peter the Great under the command of Mikhail Golitsyn successfully attacked the avatgarde of the Swedish Army of Charles XII under Carl Gustaf Roos.
 The fighting occurred in the swamp between the rivers Belaya Natopa and Chernaya Natopa.
 The Swedish forces were surprised by the Russian attack in the morning fog and withdrew to the main Swedish army.
 The swampy landscape prevented the Russian cavalry to cut off the Swedish way of retreat.
 Since the attack of the main body of the Swedish army was not part of the Russian intentions at that moment, the Russians pulled back.
 The Swede chronists noted the grown fighting skills of the Russians.
 Together with the following Battle of Lesnaya, the battle of Malatitze caused Charles XII to abort his advance to Central Russia.

Question: The Battle of Køge Bay, this indecisive battle took place on 4 October 1710, during the Great Northern War, a conflict in which a coalition led by the Tsardom of Russia successfully contested the supremacy of the Swedish Empire in Central, Northern, and Eastern Europe, and occurred during which span of year?
Answer: 1700–21