Max Suspect Neighbors per Person
For every cell in the named group, the number of Suspects (or Innocents) in that cell's 8-neighborhood (king-move distance 1, including diagonals) is at most N. The constraint applies uniformly to every member of the group, not just one person. Note that neighbors are counted globally — they are not restricted to cells inside the group itself. This makes the clue sensitive to cells outside the group boundary. Use it to cap how many Suspects can cluster in the vicinity of any single cell in the group, which is especially useful for ruling out dense concentrations.
Reading the examples
“No one in row 1 has more than N suspect neighbors”
The clue says no one in row 1 has more than 1 suspect neighbor. Given the revealed suspects, any additional suspect would violate this limit, so Diana (Innocent), Eve (Innocent), Frank (Innocent).
“No one in column A has more than N suspect neighbors”
The clue says no one in column A has more than 1 suspect neighbor. Given the revealed suspects, any additional suspect would violate this limit, so Bob (Innocent), Eve (Innocent), Henry (Innocent).
“No one in the edge has more than N suspect neighbors”
The clue says no one in the edge has more than 2 suspect neighbors. Given the revealed suspects, any additional suspect would violate this limit, so Eve (Innocent), Grace (Innocent), Henry (Innocent).