Puzzle for 2026-02-07
Freq
0
1
2
2
3
4
-
0
-
0
0
+
0
+
+
0
0
-
+
0
-
+
+
-
-
+
Signal Reconstruction Rules
Rule A: Frequency
Each row must have exactly the number of sign changes. Zeros (0) are neutral and ignored for changes.
Ex: + 0 - = 1 change.
Rule B: Balance
Each column must contain exactly two of each symbol: +, -, and
0.
Click a cell to cycle: + → - → 0 → (empty).