⚡ Logic Circuit Builder

Drag a gate into the circuit and make the output turn TRUE.

0/150 solved

Puzzle #1

💡Porch Light

Motion Sensor is OFF (0), and Dusk Sensor is OFF (0). Pick the gate that lights up the output.

Gate Palette — drag onto the circuit, or tap then tap the drop zone

✳️AND

➕OR

🚫NOT

🔀XOR

Jump to puzzle:

📘 Gate Reference

✳️AND

TRUE only when BOTH inputs are TRUE.

A	B	OUT
0	0	0
0	1	0
1	0	0
1	1	1

➕OR

TRUE when AT LEAST ONE input is TRUE.

A	B	OUT
0	0	0
0	1	1
1	0	1
1	1	1

🚫NOT

Flips a single input (ignores B).

A	B	OUT
0	—	1
1	—	0

🔀XOR

TRUE only when the inputs are DIFFERENT.

A	B	OUT
0	0	0
0	1	1
1	0	1
1	1	0

💡 Some puzzles have more than one gate that works — every gate that lights the bulb counts as solved. Puzzles where A = B = 0 only ever light up with NOT.

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💡Porch Light