Mark Sweep's puzzles

This is an archival post of puzzles I once posted on Discord, but felt nice to have posted here as well. I created quite a few practice puzzles for the WPF Puzzle GP Round 7 in 2022 (instruction booklet and competition puzzles are found here ), as it contained quite a few puzzles or variants I was unfamiliar with. Most practice puzzles have a similar difficulty level to the point distribution of the contest puzzles. I was quite happy with the general quality of the puzzles, which I had to set within the time span of a few days. 1. Easy As ABC - 8 points Rules Place letters of the specified list into some cells, no more than one letter per cell, so that each letter appears exactly once in each row and column. The letters outside the grid indicate the first letter that can be seen in the respective row or column from the respective direction. Some letters may already be filled in for you. Some cells might be marked with a cross; do not put any letters into those cells. Solve on Penpa 2. ...