Logic Masters Deutschland e.V.

mathemagician

- Normal sudoku rules apply.

- Nullifiers: There are 9 ‘nullifier’ cells in the grid; exactly one in each row, column, and 3x3 box. Each nullifier cell contains a different digit (1-9). For the purpose of arrow sums and Roman numeral sums, the value of a nullifier is treated as zero.

- Arrows: VALUES along an arrow sum to the VALUE in the connected circled cell.

- Roman numeral sums: The VALUE of cells connected by a Roman numeral sum to the given numeral (cells separated by V sum to 5; cells separated by IX sum to 9, cells separated by X sum to 10; cells separated by XI sum to 11). Not all Roman numerals are given.

- Palindromes: DIGITS along a grey palindrome line must read the same backwards and forwards.

- Anti-Knight: Cells separated by a knight's move in chess cannot contain the same digit.

(CLARIFICATION: Nullifier cell values only affect arrow sums and roman numeral sums. They do not affect palindromes, for instance: 5(nullified)–6–6–5 would be a valid palindrome; 5(nullified)–6–6–7(nullified) would not be a valid palindrome.)

Solve it on CTC .

Please let me know if the instructions are at all unclear.

Enjoy!