WPC 2015/Round 9

Duration: 50 minutes. Total point value: 500 points. Round winner: Yanzhe Qiu (China), 510 points.

Puzzles

All puzzles in this round were of well-known types but with an additional rule that the grey areas should be filled in differently. All puzzles in this round were written by Vladimir Portugalov.

Note: some of the examples in the below are low-res screenshots because the author couldn't find a way to shade/place an object over a grey region in penpa

1.	Loop (Loopfinder), 30 points

Puzzle 1: Example

Puzzle 1: Solution

2.	Sudoku (essentially Extra Regions Sudoku), 30 points
3.	Ripple Effect, 45 points

Puzzle 3: Example

Puzzle 3: Solution

4.	Magic Summer, 70 points

Puzzle 4: Example

Puzzle 4: Solution

5.	Snake, 70 points

Puzzle 5: Example

Puzzle 5: Solution

6.	Kakuro, 75 points

Puzzle 6: Example

Puzzle 6: Solution

7.	Star Battle, 85 points

Puzzle 7: Example (1 star)

Puzzle 7: Solution

8.	Tapa, 95 points

Puzzle 8: Example

Puzzle 8: Solution