How to play

  • The variables represents unique integers ranging from 1 to the number of variables;
  • Multiplication is implicit: AB means A times B, or A * B;
  • Based on the clues (equations and inequations), use the grid to create relations between variables and values:
    • Click once on a square to mark that value as false;
    • Click twice to assign the chosen value to the variable;
    • Click three times to clear the square.
  • The color of a clue changes after you assign values to all of its variables:
    • GREEN means that the statement is true;
    • RED means that the statement is false.
  • Click on a clue to mark it as used;
  • The game ends when all values are correctly assigned to the variables.

Tips

  • Figuring out which variables can't have the lowest or the highest values is a good starting point, e.g, A > B shows that A ≠ 1;
  • Analyzing the hypothetical equation C + D = 4, we can make the following statements:
  • Another quick tip: A = 2B means that A is even;
  • Don't be afraid of using pen and paper. Some puzzles might require it.

More 6x6 puzzles

  • E + F = 7
  • A + B = 9
  • B + E = 11
  • C + E + F = 8

Solve

  • A + D = 8
  • B + D = 10
  • B + D + E = 15
  • D + E + F = 14

Solve

  • if D ≠ 5 then E < 1
  • if D + F ≤ 9 then A + C ≤ 8
  • if E + F ≤ 4 then A ≠ 2
  • if D ≠ 6 then F ≤ 2
  • if B ≥ 5 then C + D ≤ 5
  • if F ≤ 4 then A ≤ 5
  • if D > 3 then A ≥ 4
  • if A + B ≤ 11 then C + E ≤ 8
  • if F ≠ 2 then B + E ≤ 6

Solve