## Archive for the ‘Kuromasu’ Category:

### Kuromasu by JinHoo Ahn

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the linex mode where left click+drag draws lines and right click marks X’s)

Theme: Symmetric House

Author/Opus: This is the 35th puzzle from our contributing puzzlemaster JinHoo Ahn.

Rules: Shade some empty cells black so that each number indicates the total count of white cells connected vertically and horizontally to that number including the numbered cell itself. Black cells cannot share an edge, and all white cells must belong to a single connected group.

Also see this example:

Difficulty: 1 star

Time Standards (highlight to view): Grandmaster = 0:40, Master = 1:15, Expert = 2:30

Solution: PDF; a solution video is also available here.

### Kuromasu (Even Rows/Columns) by Prasanna Seshadri

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the linex mode where left click+drag draws lines and right click marks X’s)

Theme: Missing 5

Author/Opus: This is the 202nd puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Shade some empty cells black so that each number indicates the total count of white cells connected vertically and horizontally to that number including the numbered cell itself. Black cells cannot share an edge, and all white cells must belong to a single connected group. Also, an even number of cells must be shaded in each row and in each column.

Also see this example:

Difficulty: 3 stars

Time Standards (highlight to view): Grandmaster = 3:00, Master = 4:45, Expert = 9:30

Solution: PDF; a solution video is also available here.

### Kuromasu by Murat Can Tonta

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the linex mode where left click+drag draws lines and right click marks X’s)

Theme: Antisymmetric 2 & 3

Author/Opus: This is the 120th puzzle from our contributing puzzlemaster Murat Can Tonta.

Rules: Shade some empty cells black so that each number indicates the total count of white cells connected vertically and horizontally to that number including the numbered cell itself. Black cells cannot share an edge, and all white cells must belong to a single connected group. Also see this example:

Answer String: Enter the length in cells of each of the white segments from left to right for the marked rows, starting at the top. Separate each row’s entry with a comma. This example has the key “14,221”.

Time Standards (highlight to view): Grandmaster = 2:15, Master = 4:30, Expert = 9:00

Solution: PDF

### Kuromasu (Double) by Prasanna Seshadri

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the linex mode where left click+drag draws lines and right click marks X’s)

Theme: Clue Symmetry and Logic

Author/Opus: This is the 43rd puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Shade some dominoes (pairs of empty cells) black so that each number indicates the total count of white cells connected vertically and horizontally to that number including the numbered cell itself. Dominoes cannot share an edge, and all white cells must belong to a single connected group. Or see this example:

Answer String: Enter the length in cells of each of the white segments from left to right for the marked rows, starting at the top. Separate each row’s entry with a comma. This example has the key “23,15”.

Time Standards (highlight to view): Grandmaster = 6:45, Master = 9:00, Expert = 18:00

Solution: PDF

Note: Kuromasu is a new puzzle for us this week and we are curious to hear what you think of it.

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the linex mode where left click+drag draws lines and right click marks X’s)

Theme: Clue Symmetry and Logic

Author/Opus: This is the 42nd puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Shade some empty cells black so that each number indicates the total count of white cells connected vertically and horizontally to that number including the numbered cell itself. Black cells cannot share an edge, and all white cells must belong to a single connected group. Or see this example:

Answer String: Enter the length in cells of each of the white segments from left to right for the marked rows, starting at the top. Separate each row’s entry with a comma. This example has the key “14,221”.

Time Standards (highlight to view): Grandmaster = 5:15, Master = 8:00, Expert = 16:00

Solution: PDF; a solution video is available here.

Note: Kuromasu is a new puzzle for us this week and we are curious to hear what you think of it.

### Kuromasu (Double) by Murat Can Tonta

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the linex mode where left click+drag draws lines and right click marks X’s)

Theme: Consecutive Partners

Author/Opus: This is the 8th puzzle from guest contributor Murat Can Tonta.

Rules: Shade some dominoes (pairs of empty cells) black so that each number indicates the total count of white cells connected vertically and horizontally to that number including the numbered cell itself. Dominoes cannot share an edge, and all white cells must belong to a single connected group. Or see this example:

Answer String: Enter the length in cells of each of the white segments from left to right for the marked rows, starting at the top. Separate each row’s entry with a comma. This example has the key “23,15”.

Time Standards (highlight to view): Grandmaster = 4:00, Master = 5:30, Expert = 11:00

Solution: PDF

Note: Kuromasu is a new puzzle for us this week and we are curious to hear what you think of it.

### Kuromasu (Double) by Murat Can Tonta

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the linex mode where left click+drag draws lines and right click marks X’s)

Theme: Three Times Four …

Author/Opus: This is the 7th puzzle from guest contributor Murat Can Tonta.

Rules: Shade some dominoes (pairs of empty cells) black so that each number indicates the total count of white cells connected vertically and horizontally to that number including the numbered cell itself. Dominoes cannot share an edge, and all white cells must belong to a single connected group. Or see this example:

Answer String: Enter the length in cells of each of the white segments from left to right for the marked rows, starting at the top. Separate each row’s entry with a comma. This example has the key “23,15”.

Time Standards (highlight to view): Grandmaster = 2:45, Master = 3:30, Expert = 7:00

Solution: PDF

Note: Kuromasu is a new puzzle for us this week and we are curious to hear what you think of it.