A thermo sudoku in color: along every thermometer the colors climb the rainbow from the round bulb, red first and magenta last. Rows, columns and boxes hold all nine colors exactly once.
About MercuryToo
A 9x9 puzzle, and the color twin of Mercury: the same idea, colors climbing the rainbow in place of rising digits. The two never play the same board on the same day.
MercuryToo is a free daily rainbow sudoku from Mind Loft: a thermo sudoku played in color. Every row, column and 3×3 box holds all nine colors exactly once, and along every thermometer drawn on the grid the colors climb the rainbow from the round bulb to the tip: red, orange, yellow, lime, green, sky, periwinkle, violet, magenta.
Each step along a thermometer has to be further along the rainbow, but it may skip colors, so a bulb can be red and the next square green. The pad at the bottom lists the colors in rainbow order, red first. Every board has exactly one solution you can always reach by logic, with no guessing.
A new board drops every day at midnight Eastern, with the week getting harder toward a Sunday Edition. No app, no signup, play free in your browser. Prefer numbers? Mercury is the same idea with digits, and it never plays the same board on the same day.
MercuryToo, in short
How do you play MercuryToo?
The 9x9 color twin of Mercury: along every thermometer the colors climb the rainbow from the bulb. One logical solution, a new board every day.
Is MercuryToo free to play?
Yes. MercuryToo is free to play in your browser on Mind Loft, with no app to install and no account required.
When does a new MercuryToo puzzle come out?
A new MercuryToo arrives every day at midnight Eastern time, and Sundays bring the Sunday Edition, the biggest or hardest board of the week.
What kind of puzzle is MercuryToo?
MercuryToo is a daily sudoku from Mind Loft: mercury in rainbow color, 9x9. It is part of the daily sudoku lineup.
Can I play past MercuryToo puzzles?
Yes. Every past MercuryToo board is in the puzzle archive, a tap away by day.
What other daily sudoku does Mind Loft have?
Fever, Arrow, Dart and Knight, among others. The Sudoku page lists every one, with a new board for each every day.