Logic Masters Deutschland e.V.

Welcome to the Carnival!

Today's Carnival Game will be Ring Toss, toss rings onto the 9 pegs and solve to win!

Normal sudoku rules apply.

Each 3×3 box contains one ring: a closed loop of the 8 outer cells of the box. The remaining center cell in the box is the central peg marked with a circle (see box 6 for an example ring).

There are three orange Dutch whisper rings, three red parity rings, and three pink renban rings in the puzzle; the solver must determine which rings should be tossed into each box. A ring can adhere to the rules of more than one ring type, but will be designated as a specific ring type when drawn. Box 6 contains one of the three parity rings.

On Dutch whisper rings, adjacent digits must be separated by at least 4. Additionally, two cells on dutch whisper rings separated by a knight's move in chess must not contain the same digit.

On parity rings, adjacent digits must alternate between odd and even. A digit on a parity ring may not appear in its own row or column (e.g., a 7 on a parity ring must not be in row 7 or column 7).

Each renban ring contains a set of consecutive digits, in any order.

For each box, the box number N must be located on the ring in that box (e.g., a 6 must be on the ring in box 6).

Puzzle can be played online here: Ring Toss