PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between a letter entry mode and a shading mode. CAPS LOCK is recommended for letter entry.)

Theme: Yell Out Greetings!

Author/Opus: This is the 245th puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Fill some empty cells with the letters E, H, I, L, O, Y (A, B, C, D in the example) so that each row and column contains each letter exactly once. The letters outside the grid indicate the first letter seen from that direction, but each row and column has one transparent letter that is ignored by the clues. The transparent letters must be different in each row and column.

See also this example:

Difficulty: 3.5 stars

Time Standards (highlight to view): Grandmaster = 3:45, Master = 8:30, Expert = 17:00

Solution: PDF and solving video.

Note: Follow this link for other less common Number Placement variations.

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between a letter entry mode and a shading mode. CAPS LOCK is recommended for letter entry.)

Theme: Three-Letter Words

Author/Opus: This is the 12th puzzle from guest contributor Eric Fox.

Rules: Fill some empty cells with the letters A, B, C, D, E so that each row and column contains each letter exactly once. Some cells will remain blank. The letters outside the grid indicate the first letter seen from that direction.

Difficulty: 2.5 stars

Time Standards (highlight to view): Grandmaster = 3:15, Master = 4:15, Expert = 8:30

Solution: PDF and solving video.

Note: Follow this link for other less common Number Placement variations.

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between a letter entry mode and a shading mode. CAPS LOCK is recommended for letter entry.)

Theme: Groups of Liars

Author/Opus: This is the 58th puzzle from our contributing puzzlemaster JinHoo Ahn.

Rules: Fill some empty cells with the letters A, B, C so that each row and column contains each letter exactly once. Some cells will remain blank. The letters outside the grid do NOT indicate the first letter seen from that direction.

Difficulty: 2.5 stars

Time Standards (highlight to view): Grandmaster = 1:45, Master = 3:30, Expert = 7:00

Solution: PDF and solving video.

Note: Follow this link for other less common Number Placement variations.

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between a letter entry mode and a shading mode. CAPS LOCK is recommended for letter entry.)

Theme: Easy as

Author/Opus: This is the 379th puzzle from our managing editor Serkan Yürekli.

Rules: Fill some empty cells with the letters E, A, S, Y so that each row, column, and bold region contains each letter exactly once. Some cells will remain blank. The letters outside the grid indicate the first letter seen from that direction.

Difficulty: 2 stars

Time Standards (highlight to view): Grandmaster = 1:15, Master = 2:30, Expert = 5:00

Solution: PDF and solving video.

Note: Follow this link for other less common Number Placement variations.

PDF

or solve online (using our beta test of Penpa-Edit tools)

Theme: Evens

Author/Opus: This is the 388th puzzle from our contributing puzzlemaster Grant Fikes.

Rules: Variation of Skyscrapers rules. Instead of their usual meaning, exterior clues indicate the height of one of the visible buildings that can be seen from that direction.

See also this example:

Difficulty: 1 star

Time Standards (highlight to view): Grandmaster = 0:50, Master = 1:20, Expert = 2:40

Solution: PDF and solving video.

Note: Follow this link for classic Skyscrapers puzzles and this link for variations on Skyscrapers puzzles. If you are new to this puzzle type, here are our easiest Skyscrapers Puzzles to get started on. More Skyscrapers puzzles can be found in The Art of Puzzles, in our beginner-friendly collection Intro to GMPuzzles by Serkan Yürekli, and in the e-book Skyscrapers by Ashish Kumar.

PDF

or solve online (using our beta test of Penpa-Edit tools)

Theme: The Lonely Ones

Author/Opus: This is the 422nd puzzle from Thomas Snyder, aka Dr. Sudoku.

Rules: Standard TomTom rules, using the integers 1-6.

Difficulty: 3.5 stars

Time Standards (highlight to view): Grandmaster = 4:15, Master = 7:00, Expert = 14:00

Solution: PDF and solving video.

Note: Follow this link for classic TomTom and this link for TomTom variations. If you are new to this puzzle type, here are our easiest TomTom to get started on. More TomTom puzzles can be found in the TomTom collection, in The Art of Puzzles, and in our beginner-friendly collection Intro to GMPuzzles by Serkan Yürekli.

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between number entry and shading modes.)

Theme: Mystery Box

Author/Opus: This is the 12th puzzle from guest contributor Sam Cappleman-Lynes.

Rules: Place a number from 0 to 9 into each area so that no two areas that touch orthogonally share the same number. Wherever four areas meet at a point (marked with dots as a visual aid), the numbers in those areas must add up to 10.

Also, see this example:

Difficulty: 4.5 stars

Time Standards (highlight to view): Grandmaster = 14:45, Master = 21:00, Expert = 42:00

Solution: PDF and solving video.

Note: Follow this link for other less common Number Placement puzzles.

PDF

or solve online (using our beta test of Penpa-Edit tools)

Theme: Dominoes

Author/Opus: This is the 239th puzzle from our contributing puzzlemaster Prasanna Seshadri.

Rules: Place a number from 0 to 9 into each area so that no two areas that touch orthogonally share the same number. Wherever four areas meet at a point (marked with dots as a visual aid), the numbers in those areas must add up to 10.

Also, see this example:

Difficulty: 3.5 stars

Time Standards (highlight to view): Grandmaster = 4:45, Master = 7:00, Expert = 14:00

Solution: PDF and solving video.

Note: Follow this link for other less common Number Placement puzzles.

PDF

or solve online (using our beta test of Penpa-Edit tools; use tab to shift between number entry and shading modes.)

Theme: Order and Disorder

Author/Opus: This is the 375th puzzle from our managing editor Serkan Yürekli.

Rules: Fill each row and column of the grid with the digits 1 to 5 and two blackened cells. Numbers outside the grid indicate the sum of the digits between the two blackened cells in that row or column. Blackened cells are allowed to touch. Or see here.

Difficulty: 3 stars

Time Standards (highlight to view): Grandmaster = 4:30, Master = 6:30, Expert = 13:00

Solution: PDF and solving video.

Note: Follow this link for other less common Number Placement puzzles.

PDF

or solve online (using our beta test of Penpa-Edit tools)

Theme: 0 to 7

Author/Opus: This is the 53rd puzzle from our contributing puzzlemaster JinHoo Ahn.

Rules: Place a number from 0 to 9 into each area so that no two areas that touch orthogonally share the same number. Wherever four areas meet at a point (marked with dots as a visual aid), the numbers in those areas must add up to 10.

Also, see this example:

Difficulty: 2 stars

Time Standards (highlight to view): Grandmaster = 1:45, Master = 3:00, Expert = 6:00

Solution: PDF and solving video.

Note: Follow this link for other less common Number Placement puzzles.