LinkedIn Tango #719 answer — September 26, 2026

Rows count from the top and columns from the left. The rule doing most of the work: no more than two suns or two moons may sit next to each other in a row or column.

1. Row 1 has two suns side by side in columns 2 and 3, so columns 1 and 4 of that row are moons.
2. Row 1, column 5 is joined by an = sign to the moon to its left, so it is a moon too.
3. Row 2, column 1 is joined by an × sign to the moon above it, so it is the opposite: a sun.
4. Row 1 has two moons side by side in columns 4 and 5, so column 6 of that row is a sun.
5. Row 2, column 6 is joined by an × sign to the sun above it, so it is the opposite: a moon.
6. Column 6 has two suns one above the other in rows 3 and 4, so row 5 of that column is a moon.
7. Row 6, column 6 is joined by an = sign to the moon above it, so it is a moon too.
8. Row 6 needs just one more moon, and the × sign between columns 2 and 3 means one of those two cells is a moon. So column 1 of that row is a sun.
9. Row 5, column 1 is joined by an × sign to the sun below it, so it is the opposite: a moon.
10. Suppose row 2, column 5 were a moon. Then column 5 would have two moons one above the other in rows 1 and 2, so row 3 of that column would be a sun. Then column 5 would have its three moons, so rows 4 and 5 of that column would be suns. That would make three suns in a row, in rows 3, 4, and 5 of column 5. So row 2, column 5 is a sun.
11. Suppose row 4, column 2 were a sun. Then row 4 would have two suns side by side in columns 1 and 2, so column 3 of that row would be a moon. Then row 4 would have its three suns, so columns 4 and 5 of that row would be moons. That would make three moons in a row, in columns 3, 4, and 5 of row 4. So row 4, column 2 is a moon.
12. Suppose row 4, column 5 were a sun. Then row 4 would have two suns side by side in columns 5 and 6, so column 4 of that row would be a moon. Then row 4 would have moons in columns 2 and 4, so column 3 between them would be a sun. That would give row 4 four suns, and it can only hold three. So row 4, column 5 is a moon.
13. Column 5 has moons in rows 4 and 6, so row 5 between them is a sun: another moon would make three in a row.
14. Column 5 already has its three moons, so its last open cell, row 3, is a sun.
15. Row 3 has two suns side by side in columns 5 and 6, so column 4 of that row is a moon.
16. Column 4 has moons in rows 1 and 3, so row 2 between them is a sun: another moon would make three in a row.
17. Row 2 has two suns side by side in columns 4 and 5, so column 3 of that row is a moon.
18. Row 2 already has its three suns, so its last open cell, column 2, is a moon.
19. Column 2 has moons in rows 2 and 4, so row 3 between them is a sun: another moon would make three in a row.
20. Row 3 already has its three suns, so its last open cell, column 3, is a moon.
21. Column 3 has two moons one above the other in rows 2 and 3, so row 4 of that column is a sun.
22. Row 4 already has its three suns, so its last open cell, column 4, is a moon.
23. Column 4 has two moons one above the other in rows 3 and 4, so row 5 of that column is a sun.
24. Row 5 has two suns side by side in columns 4 and 5, so column 3 of that row is a moon.
25. Row 5 has moons in columns 1 and 3, so column 2 between them is a sun: another moon would make three in a row.
26. Column 2 already has its three suns, so its last open cell, row 6, is a moon.
27. Row 6, column 3 is joined by an × sign to the moon to its left, so it is the opposite: a sun.