Tile Shift · 3 MIN READ
Tile Shift: plan the empty square, then move the tile
A two-move example shows why the blank is your route through the board, and how a small plan prevents unhelpful back-and-forth slides.
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.
Tile Shift · 3 MIN READ
Tile Shift: protect a solved row while the other tiles circulate
Use a four-move loop to understand how tiles circulate, then distinguish a useful boundary from restrictions that leave too little room to work.
Signal Grid · 3 MIN READ
Signal Grid: understand what overlapping switches cancel
Reason about a press as a set of changes. A worked two-by-two example explains why pressing an unlit square can be the right move.
Signal Grid · 3 MIN READ
Signal Grid: solve one row at a time, then check the last
Once you choose the first row of presses, the rows below are forced. Learn the method, its last-row test and the mistakes that make it seem unreliable.
Pair Search · 3 MIN READ
Pair Search: remember a location as carefully as a symbol
A simple row-and-column system turns vague visual memory into a usable map of a four-by-four board, without needing to remember every card at once.
Pair Search · 3 MIN READ
Pair Search: turn a mismatch into your next decision
Separate known pairs, known single cards and unseen positions. This decision routine explains when to collect information and when to take a match.