Logic Masters Deutschland e.V.

This puzzle consists of 3 sides of a cube, with 9 fields on each side of the cube, which have the index numbers 1 - 9 on each side. (rows are e.g. in fields 1,2,3; columns are e.g. in fields 1,4,7). In the solution are all 26 letters of the alphabet and one empty field. If you need a hint for the start: please write a hidden comment!

Preface: No letter touches an adjacent letter of the alphabet on an edge or corner, not even in the "touching" fields of another side of the cube.

1. There are 3 letters of BAUERNHOF on each side of the cube.

2. The sum of the field index numbers of HUND is 9.

3. All letters of KATZE are in fields with odd index numbers.

4. The sum of the field index numbers of MAUS is 27.

5. All letters of VOGELSCHWARM are in corner fields.

6. All letters of PFERD are on one side of the cube.

7. All letters of KUH are on one side of the cube.

8. There are 2 letters of SCHAFE on each side of the cube.

9. Only one of the two following statements is true: The B is on side B. The M is on side A.

10. Only one of the two following statements is true: The Q is in field B2. The letters X, Y and Z are in fields with the same index number.

11. Only one of the two following statements is true: The field with the F has the index number 8. The empty field and the field with J touch each other with an edge.

12. Only two of the three following statements are true: The letters of KUH are on side C. The letters of PFERD are on side B. The field with the I touches all other fields with letters of RIND (on an edge or corner).

13. Only two of the three following statements are true: The fields with C and X touch each other. The fields with G and L touch each other. The fields with S and Y don't touch each other.

Starting help for the logical path (in white letters):

As a first step, you can divide all letters into 2 groups (following hint 5): the 12 letters of VOGELSCHWARM are in corner fields, the other 14 letters and the empty field not. The corner fields all have the index numbers 1, 3, 7 and 9. Hint 3 says that the letters of KATZE are in fields with odd index numbers. The letters K, T and Z are not in corner fields, so they have to be in the 3 fields with index number 5. In hint 10 it's claimed that X, Y and Z are in fields with the same index number. This is not true, X and Y can't be in fields with index number 5, hint 10 is solved.