This Specific Group Has Exactly N
This specific group has exactly N Suspects (or Innocents), and no other group of the same kind shares that count. The clue asserts two things simultaneously: (1) the count in this group is exactly N, and (2) every other group of the same kind has a count that is not N. Use both halves together: pin the count for this group, then eliminate any assignment where a second group would also reach N. Compared to "Only One Group Has Exactly N", this variant identifies which specific group is the unique holder, making the first half immediately actionable.
Reading the examples
“Only row 1 has exactly N suspects”
The clue says only row 1 has exactly 1 suspect — no other comparable unit does. Given the revealed cells, the uniqueness constraint forces Alice (Innocent), Carol (Innocent).
“Only column A has exactly N suspects”
The clue says only column A has exactly 1 suspect — no other comparable unit does. Given the revealed cells, the uniqueness constraint forces Alice (Innocent), Grace (Innocent).
“Only Y's neighbors have exactly N suspects”
The clue says only Eve's neighbors has exactly 3 suspects — no other comparable unit does. Given the revealed cells, the uniqueness constraint forces Bob (Innocent), Frank (Innocent), Henry (Innocent).