Two qubits. Half the shots must read |00⟩ and half must read |11⟩ — and |01⟩ and |10⟩ must never appear. The two qubits always agree, but neither one is decided in advance.
Select a gate to see what it does, then tap a wire — or Tab to a wire and press Enter — to place it.
Circuit
Gates
0
Par
2
Pick a gate from the palette to start building.
Pick a gate, then tap a cell — or Tab into the grid and use the arrow keys and Enter — to place it.
Practice more like this
Generate a fresh target state drill at this difficulty. Every generated puzzle is verified solvable by execution before you see it — the generator runs its own solution through the same simulator and grader that will judge yours.