Tango Solver — enter the givens, get the grid
Copy your board below: tap cells to cycle blank → ☀️ → 🌙 for the pre-filled symbols, use the sign tools for any = and × between cells, then Solve fills everything. Signs matter — a board that looks ambiguous without them usually isn't once they're in.
How to use it
Symbols tool: tap any cell to cycle it blank → sun → moon, matching only the symbols your board shows as givens. Sign tools: pick = or ×, then tap the two neighbouring cells the sign sits between (Erase removes a sign the same way). Solve completes the grid — every row and column balanced, never three alike in a row, all signs honoured. "Multiple solutions" means the real board has a given or a sign you haven't entered yet.