Logic Masters Deutschland e.V.

Fill each region with the digits 0–9, each exactly once. A region is made of two orthogonally connected pentominoes. There are 8 such regions. All 12 pentomino shapes (F, I, L, N, P, T, U, V, W, X, Y, Z) appear at least once in the grid. Each pentomino has a circle marking its top-left cell.

One additional single-cell region lies somewhere in the last row. Its digit is the number of pentominoes that cell sees (horizontally + vertically across the grid).

Draw a single closed loop, moving orthogonally or diagonally. The loop must visit each pentomino exactly once, pass through every circle and exactly 3 cells per pentomino (including the circle). The sum of these 3 cells is the same for all pentominoes. The loop may not cross itself. If multiple paths are possible within a pentomino, loop digits must be strictly increasing or strictly decreasing. The loop cannot exit a cell in the direction of a small black arrow.

Circles are doublers: their digit counts twice toward the 3-cell sum.

Circles connected along the loop contain consecutive digits. At least one circle is 8, and at least one circle is 0.

Small black arrows indicate that the digit in that cell is repeated once somewhere in each indicated direction. All row and column repeats are explained by these arrows.

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