The puzzle uses killer, sandwich and thermo rules: All coloured 'cages' sum to 19, clues outside the grid show the sum of digits between the 1 and the 9 in that row/column, and thermometers have numbers strictly increasing from the 'bulb'.
The puzzle uses killer, sandwich and thermo rules: All coloured 'cages' sum to 19, clues outside the grid show the sum of digits between the 1 and the 9 in that row/column, and thermometers have numbers strictly increasing from the 'bulb'.