Grid Puzzles Blog
Strategies, how-to guides, and tips to master every puzzle
Advanced Sudoku Techniques: What to Learn After Singles
Learn which advanced Sudoku techniques to study after singles, with a 60-board comparison and an original pair-to-single practice position.
Dordle Tips: Make One Guess Help Both Boards
Compare a candidate with a shared information guess on two Dordle shortlists, test a twelve-word opener sample and count the turns needed to enter both answers.
Futoshiki Strategy: Turn Inequality Chains into Numbers
Use an inequality chain and a crossing column to solve a Futoshiki position. Follow an original 4×4 board, finish two cells and avoid the consecutive-number mistake.
Games Like Wordle: More Boards, Numbers or Geography?
Compare Dordle, Tridle and Sedecordle with arithmetic and geography alternatives. See one guess scored on two boards and understand the shared guess limit.
Hidden Triples in Sudoku: Find the Digits Before You Erase
Spot hidden triples by listing where three digits can go. An original Sudoku shows which extra notes to erase, a naked-triple comparison and a fourth-cell trap.
Killer Sudoku Cage Combinations: The Complete Table
Find every Killer Sudoku cage combination by cell count and sum. Learn how sets differ from positions, subtract filled digits, and check three original diagrams.
N-Queens vs. Queens: Which Diagonals Are Forbidden?
Compare N-Queens and colored Queens on one original board. Check distant diagonals, spot a region conflict and test three pairs before applying the wrong rule.
Queens Puzzle Strategy: Reserve the Rows Before Placing a Crown
Use two Queens regions to reserve two rows before choosing a crown. Follow an original checked board, finish a practice solve and avoid the distant-diagonal mistake.
Skyscraper Sudoku: Which Notes Can You Remove?
Find a Skyscraper in Sudoku, follow its two candidate pairs, and check which notes see both roofs. An original grid shows a valid removal and a costly mistake.
Solve Sudoku Faster: Follow the Last Placement
Follow one Sudoku placement through its box, column and row on an original grid. Keep notes accurate, avoid repeated scans and try the next-link exercise.