Grid Hero 4+

I've been constantly updating and adding new number logic puzzles recently.
Feel free to contact me for discussion. My email is: wyklion@qq.com

Welcome to 'Grid Hero', a collection of number games.
Currently includes games: Hitori, Sudoku, Kuromasu, FindNine, Skycrapers, SlitherLink, Binairo, Dominosa and Oneness.
All games have leaderboards on GameCenter.
Continuously adding new games.

Hitori:
In Hitori, the gameplay involves solving puzzles by blacking out squares. To win the game, after blacking out certain numbered squares, the entire grid must satisfy the following three conditions:
1. No repetition of numbers in each row and column of the unblacked squares.
2. Blacked-out squares cannot be adjacent horizontally or vertically.
3. All unblacked squares must be connected horizontally or vertically, forming a single continuous entity without being divided into separate sections.

Sudoku:
Multiple Difficulty Levels: Sudoku comes in four levels - Easy, Normal, Hard, and Master, allowing you to choose a challenge that suits your skill level.
Pencil Mode: Enjoy the convenience of Pencil Mode to mark candidate numbers, improving puzzle-solving efficiency.
Undo/Redo: Experience a relaxing puzzle-solving experience with the ability to undo and redo actions, correcting mistakes at any time.
Auto-fill Candidates: Speed up the puzzle-solving process by automatically filling in all candidate numbers with just one click.
Candidate Lock (Long Press to Lock): Easily fill in consecutive numbers by tapping and holding to lock the candidate number.
Eraser Lock (Long Press to Lock): Consecutively erase cells with a long press to lock the eraser function.

Nine Find:
Circle each number from 1 to 9, and ensure that the sum in each row and column is not greater than 9.

Oneness:
Turn all numbers into 1!

Kuromasu:
Paint the grid black according to the following conditions:
1. Each number on the board represents the number of white cells that can be seen from that cell, including itself. A cell can be seen from another cell if both cells are within the same row or column, and there are no black cells between them in that row or column.
2. Numbered cells must not be black.
3. No two black cells must be horizontally or vertically adjacent.
4. All the white cells must be connected horizontally or vertically.

Slitherlink:
The objective of the game is to connect the dots with line segments to form an unbroken and non-crossing loop:
1. The number of line segments around each number must be equal to that number.
2. In areas without numbers, there is no restriction on the number of line segments.
3. Line segments can form a continuous loop and must not intersect or branch.

Skycrapers:
The objective is to place skyscrapers in all cells on the grid according to the rules:
1. The height of the skyscrapers is from 1 to the size of the grid i.e. 1 to 4 for a 4x4 puzzle.
2. You cannot have two skyscrapers with the same height on the same row or column.
3. The numbers on the sides of the grid indicate how many skyscrapers would you see if you look in the direction of the arrow.

Binario:
The objective of the game is to fill the remaining squares with X and O while satisfying the following conditions:
1. There are no more than two consecutive X's or O's in each row and column.
2. The number of X's and O's in each row and column is equal.
3. The arrangement of X's and O's in each row and column is unique.

Dominosa:
Find all adjacent number pairs on the board. Each pair of numbers can only appear once. For example, in a game with a maximum value of 2, all pairs of numbers are 00, 01, 02, 11, 12, 22.
1. Click on the middle of two numbers to form a pair of numbers.
2. All numbers will form pairs.