Logic Masters Deutschland e.V.

This puzzle consists of two grids that have different rules but are nevertheless connected.

• Left Grid: Stostone:
• Shade some cells gray such that:
  • Each outlined region contains at least one shaded cell.
  • Shaded cells in different regions do not share an edge.
  • All shaded cells in each region form an orthogonally-connected block.
  • If all those blocks fell straight down, without changing shape or rotation (or moving horizontally), they would exactly fill the bottom half of this grid.
• Right grid: Build-Your-Own Killer SeisQuadri:
  • SeisQuadri: Place the digits 1 to 9 once each in every marked 3x3 box such that digits do not repeat in a row or column of the grid.
  • Build-Your-Own Killer: Divide the grid entirely into Killer cages, such that:
    • If there is a clue in the corner of a cell, the digits in that cell's cage must sum to that number (cages may contain multiple clues, or no clues at all).
    • Digits cannot repeat within a cage (regardless of whether the cage is clued).
    • A question mark may represent any digit from 0 to 9 (a two-digit sum does not start with a 0).
• Interaction:
  • After the Stostone blocks fall to the bottom half of the left grid, their subsequent positions, sizes and shapes must match up exactly with the positions, sizes and shapes of the Killer cages in the right grid.