V0.375 · GAME-FIRST THERMOMETER LOGIC

Thermometers

Finish today’s Classic + Curved pair, or open Practice for 6×6–10×10 boards. Fill from each bulb and match every line count.

Current boardStandard 8×8

Tap to cycle, or choose Mercury/Empty and drag. Right-click marks Empty. Keyboard: arrows, M, X/E, Space.

count

Mercury0 / 64

Open64

Moves0

Time0:00

Hint preview

More tools

Teaching lens

Exact ranges and forced structure. Turning this on marks the run Assisted.

0 forced

Exact stateNot checked

Row pressure—

Column pressure—

Progress & recent solves

How to play & solving strategy

Bulb-first fill

Mercury is always a continuous prefix. Filling a segment pulls every segment back to the bulb with it; marking a segment empty rules out everything toward the tip.

Finish complete lines

If a row or column already has its clue count, every open cell is empty. If the remaining open cells exactly equal the deficit, they all fill.

Collapse a thermometer range

Row and column counts squeeze each thermometer’s possible fill level. When only one level remains, every segment on that thermometer is forced.

Reasoned Hint

Hint first previews a logical move without changing the board. Apply it only when you want assistance; named techniques are checked against the exact unique continuation.