Easy as ABC (Transparent) by Prasanna Seshadri
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.