Puzzle rules
Neutral Grid
Fill the grid with + and − signs. Every row and column must contain equal numbers of each sign, no three identical signs may appear consecutively horizontally or vertically, and no two completed rows or columns may be identical.
How to solve
Complete rules
Goal: Complete the balanced + and − pattern. Rules: - Each row and column must contain the same number of + and − signs. - No three identical signs may appear consecutively in any row or column. - No two completed rows may be identical. - No two completed columns may be identical. - Given signs are fixed.