The green area is the land the Ottomans held in that year. You have five guesses; after each one we tell you whether the answer is earlier or later and how close you are. If the map did not change for several years, every year in that range counts as correct.
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A new map every day · resets at midnight Turkish time
How to play
Look at the green area and type a year or pick it with the slider.
After each guess you see whether the answer is earlier or later; a blue row means within 25 years.
Every wrong guess unlocks a hint: first the land area, then the century, then the sultan.
When you finish, share your result as squares; a new map comes tomorrow.
The maps are drawn from the atlas's regional data; see the Method page for sources.