42- Palindrome Sudoku

Palindrome Sudoku

(Czech Republic Puzzle Championship 2014 (Sudoku Round))

Place a digit from 1 to 9 into each of the empty squares so that each digit appears exactly once in each row, column and 3x3 box. The digits in the squares with the line form palindromes, i.e. they are read evenly from both sides.

41- Untouchable Sudoku

Untouchable Sudoku

(Czech Republic Puzzle Championship 2014 (Sudoku Round))

Place a digit from 1 to 9 into each of the empty squares so that each digit appears exactly once in each row, column and 3x3 box. The same digits can't touch in the corners.

40- XV Sudoku

XV Sudoku

(Czech Republic Puzzle Championship 2014 (Sudoku Round))

Place a digit from 1 to 9 into each of the empty squares so that each digit appears exactly once in each row, column and 3x3 box. All adjacent cells with two digits summing to 5 are marked by V, while those summing to 10 are marked by X. The cells edges which do not contain a V or an X cannot have digits summing to 5 or 10.

39- Greater Than Sudoku

Greater Than Sudoku

(Czech Republic Puzzle Championship 2014 (Sudoku Round))

Place a digit from 1 to 9 into each of the empty squares so that each digit appears exactly once in each row, column and 3x3 box. There are given symbols of ‘greater than’ (>) or ‘less than’ (<) on the common line of the two adjacent cells.

38- Arrow Sudoku

Arrow Sudoku

(Czech Republic Puzzle Championship 2014 (Sudoku Round))

Place a digit from 1 to 9 into each of the empty squares so that each digit appears exactly once in each row, column and 3x3 box. The number in a circle is the sum of the digits which are covered by its arrow.

37- Antiknight Sudoku

Antiknight Sudoku

(Czech Republic Puzzle Championship 2014 (Sudoku Round))

Place a digit from 1 to 9 into each of the empty squares so that each digit appears exactly once in each row, column and 3x3 box. The same numbers are not chess-knight move connected.

36- Windoku

Windoku

(Czech Republic Puzzle Championship 2014 (Sudoku Round))

Place a digit from 1 to 9 into each of the empty squares so that each digit appears exactly once in each of the rows, columns, and 3x3 boxes. Moreover, coloured squares contain the digits 1 to 9 too.

35- Non-Consecutive Sudoku

Non-Consecutive Sudoku

(Czech Republic Puzzle Championship 2014 (Sudoku Round))

Place a digit from 1 to 9 into each of the empty squares so that each digit appears exactly once in each row, column and 3x3 box.  No numbers in vertically or horizontally adjacent cells will be consecutive numbers.

34- Consecutive Sudoku

Consecutive Sudoku

(Czech Republic Puzzle Championship 2014 (Sudoku Round))

Place a digit from 1 to 9 into each of the empty squares so that each digit appears exactly once in each row, column and 3x3 box. All two adjacent cells that have a small circle between them are consecutive in value.