Number Loom · 3 MIN READ
Number Loom: narrow the candidates before choosing a number
Use a row with two gaps to separate a forced entry from a plausible guess, then bring the box constraints into the same reasoning.
A better move starts
with a useful idea.
Concrete explanations for the puzzles you can play here. Read a little, try the idea, and notice what changes.
Line Weave · 3 MIN READ
Line Weave: find overlap before trying to see a picture
A run of five in a line of eight forces two central squares. Learn why that overlap is reliable, and where a tempting visual guess goes wrong.
Tower Relay · 3 MIN READ
Tower Relay: move the small stack before the large disc
Break a five-disc transfer into two four-disc transfers. The middle move explains both the working tower and the familiar minimum-move count.
Tile Shift · 3 MIN READ
Tile Shift: read the starting distance without mistaking it for the answer
A four-by-four example explains the difference between a distance floor, a proved shortest route and an impossible arrangement the generator will never deal.
Signal Grid · 3 MIN READ
Signal Grid: count useful presses, not just lit lamps
Compare three, five and six illuminated squares to see why a darker board need not be closer to completion, and what the starting minimum actually measures.
Pair Search · 3 MIN READ
Pair Search: read the attempt counter halfway through a larger board
Separate matched pairs from completed attempts, calculate a realistic lower bound for the rest of a run and keep locations stable as the board grows taller.