Geography quiz
Countries of Europe logic puzzle
16 cells, one answer each, all different. One cell is given; every cell you solve shows a new clue about the others.
- Format
- Logic grid
- Items
- 15 cells
- Limit
- 10:00
- Level
- Medium
- Checked
- 2026.10.03
The rules as listed below.
- Grid
- 4 by 4, 15 to solve
- Time limit
- 10:00
- Wrong answer
- A strike; 3 end the round
- Pick a cell and type its country. Every cell you solve shows a new clue about other cells.
- Cells are named like chess squares: the letter is the column, the number is the row.
- Not sure yet? Add a name to a cell as a note. Notes are never checked and never cost a strike.
- Keyboard: Alt and an arrow key moves between cells, Enter answers, Shift and Enter adds a note.
- Pause whenever you like (Esc). The board hides while the clock is stopped.
Work out the country in every cell from the clues. The grid appears when you start.
About this quiz
Europe's crowded borders make it the best continent for a logic grid. Each clue ties a cell to others by borders, population or area, and only one arrangement fits them all.
- Any of the 47 countries Ribbia files under Europe could be in a cell, and no answer appears twice.
- The 47 countries are those the shared list files under Europe, including Russia, Turkey and Cyprus.
- A clue only says one country has more people or more area than another when it is at least a quarter larger.
- Neighbour counts cover every land border, including those with countries outside Europe.
Sources
- [1]United Nations. Member States.
- [2]United Nations. Non-member States.
- [3]United Nations Statistics Division. Standard country or area codes for statistical use (M49).
- [4]United Nations Statistics Division. Statistical Yearbook: population, density and surface area.
- [5]United Nations Statistics Division. Demographic Yearbook 2023, Table 3: population, rate of change, surface area and density.
Last checked October 3, 2026
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