Crossworld

CROSSWORLD

Place on the 3×3 grid the names of the following european cities:
• Amsterdam
• Athens
• Copenaghen
• Frankfurt am Main
• London
• Madrid
• Tallinn
• Wien
• Zürich
The only rule you have to follow is that the first line should have the most northern cities, the third line the most southern, and the same counts for the east and the west, in the right and left columns.
testcrossworld_prob.jpg

SOLUTION

testcrossworld_sol.jpg