26.11.2009, 12:28
PARTITION, IRREGULAR SUDOKU, MAGNETS (Points: 50+1)
Partition: Split the big part in the middle of the grid in 4 congruent parts. The parts can be mirrored and rotated.
Irregular Sudoku: Insert the digits from 1 to 5 (in the example 1 to 2) in the grid so that in every row, column and in each of the outlined areas, every digit occurs exactly once.
Magnets: Split in every outlined region the fields without digits in plates of the size 1x2. Fill these plates with neutral (black) and magnetic plates. Magnetic plates have the two poles plus “+” and minus “-“. Parts of the plates with the same polarity (plus or minus) cannot touch each other orthogonally. The numbers outside the grid show how many positive and negative poles are found in the corresponding row or column.
Solution Code: The 4. row. Write a vertical line (“|”) for a border of an outlined region, the digits, the “+” and “-“ for the poles of the magnets and “N” for a neutral field.
For the example the solution would be -|N-|12|-
Partition: Split the big part in the middle of the grid in 4 congruent parts. The parts can be mirrored and rotated.
Irregular Sudoku: Insert the digits from 1 to 5 (in the example 1 to 2) in the grid so that in every row, column and in each of the outlined areas, every digit occurs exactly once.
Magnets: Split in every outlined region the fields without digits in plates of the size 1x2. Fill these plates with neutral (black) and magnetic plates. Magnetic plates have the two poles plus “+” and minus “-“. Parts of the plates with the same polarity (plus or minus) cannot touch each other orthogonally. The numbers outside the grid show how many positive and negative poles are found in the corresponding row or column.
Solution Code: The 4. row. Write a vertical line (“|”) for a border of an outlined region, the digits, the “+” and “-“ for the poles of the magnets and “N” for a neutral field.
For the example the solution would be -|N-|12|-