In this puzzle, grid points are arranged at equal intervals on the board surface, and are connected by vertical and horizontal straight lines (red boundary lines) to form a single closed curve (closed loop). It's a drawing puzzle. The rules for drawing borders are that the numerical values 0 to 3 pre-marked in some squares surrounded by grid points at the four corners indicate the number of borders surrounding the squares. Always draw the same number of borders (no borders can be drawn if 0), and guess the number of borders (0 to 3, the number of borders is up to 3) for squares without numbers and pull. When drawing a boundary line, line segments must be: 1) only horizontal or vertical, and cannot be drawn diagonally; It is essential that all line segments should be connected continuously (that they can be traced with a single stroke).
1) Create a puzzle
Tap the "Create" button on the screen. There are three ways to create a question: "automatic questioning", "input questioning" and "pattern questioning".
* "Automatic question" can automatically create a puzzle by tapping the "Create" button directly. At that time, you can select the number of grid points (4x4, 5x5, 6x6, 7x7, and 8x8) on the top of the screen in advance (default is 6x6). When the creation is completed, numbers (hint numbers) will be displayed in some squares, and it will be in answer mode.
* "Input question" creates a puzzle by manually arranging hint numbers. Before tapping the "Create" button, tap any square on the screen once (the background color of the tapped square changes from white to light blue). This will allow you to enter a number (hint number) in that square using the number buttons at the bottom of the screen. Repeat this operation to create a puzzle on the board. To correct a number, overwrite another number (delete by pressing the "B" button). The "<" (undo) and ">" (redo) buttons are also available. After completing the question, tap the "Create" button to automatically verify whether there is an answer or not, and then enter the answer mode. If it takes a long time to create a puzzle, tap the "Stop" button (same as the "Create" button) and start over.
* "Pattern question", the computer automatically creates a puzzle after tapping any number of squares that form a loop. Before tapping the "Create" button, tap the first square twice in a row (at this time, the background color of the square changes from white → light blue → dark blue). Tap twice consecutively is only the first time, and from the next time, it will be specified with one tap. To cancel the designation, tap the dark blue square again (at this time, the background color of the square returns to white). After specifying all squares, tap the "Create" button. This will automatically create a puzzle that matches the pattern of the specified squares. When you finish creating, it will be in answer mode.
2) Solve the puzzle
In answer mode, by tapping between two adjacent grid points in the vertical or horizontal direction, you can draw a straight line connecting the grid points. When the straight line is correct, the comment "Good job!" is displayed in the comment line at the bottom of the screen and drawn, but otherwise "NG!" is displayed and drawing is not possible. In addition to this manual input, by tapping the "Next answer" button, you can draw multiple boundary lines for the correct answers one by one. If it is impossible to answer, a message will be displayed in the comment line. You can erase the drawn straight line by tapping again. The ">" (back) and "<" (redo) buttons are also available.
1) Create a puzzle
Tap the "Create" button on the screen. There are three ways to create a question: "automatic questioning", "input questioning" and "pattern questioning".
* "Automatic question" can automatically create a puzzle by tapping the "Create" button directly. At that time, you can select the number of grid points (4x4, 5x5, 6x6, 7x7, and 8x8) on the top of the screen in advance (default is 6x6). When the creation is completed, numbers (hint numbers) will be displayed in some squares, and it will be in answer mode.
* "Input question" creates a puzzle by manually arranging hint numbers. Before tapping the "Create" button, tap any square on the screen once (the background color of the tapped square changes from white to light blue). This will allow you to enter a number (hint number) in that square using the number buttons at the bottom of the screen. Repeat this operation to create a puzzle on the board. To correct a number, overwrite another number (delete by pressing the "B" button). The "<" (undo) and ">" (redo) buttons are also available. After completing the question, tap the "Create" button to automatically verify whether there is an answer or not, and then enter the answer mode. If it takes a long time to create a puzzle, tap the "Stop" button (same as the "Create" button) and start over.
* "Pattern question", the computer automatically creates a puzzle after tapping any number of squares that form a loop. Before tapping the "Create" button, tap the first square twice in a row (at this time, the background color of the square changes from white → light blue → dark blue). Tap twice consecutively is only the first time, and from the next time, it will be specified with one tap. To cancel the designation, tap the dark blue square again (at this time, the background color of the square returns to white). After specifying all squares, tap the "Create" button. This will automatically create a puzzle that matches the pattern of the specified squares. When you finish creating, it will be in answer mode.
2) Solve the puzzle
In answer mode, by tapping between two adjacent grid points in the vertical or horizontal direction, you can draw a straight line connecting the grid points. When the straight line is correct, the comment "Good job!" is displayed in the comment line at the bottom of the screen and drawn, but otherwise "NG!" is displayed and drawing is not possible. In addition to this manual input, by tapping the "Next answer" button, you can draw multiple boundary lines for the correct answers one by one. If it is impossible to answer, a message will be displayed in the comment line. You can erase the drawn straight line by tapping again. The ">" (back) and "<" (redo) buttons are also available.
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