THE PLAYBOOK · QTHCC
How to play Futoshiki
QTHCC presents Futoshiki with a practical playbook rather than a download screen. Place 1–4 once in each row and column while obeying every inequality. Read the explain your choice note before you begin.
Twelve checked 4×4 puzzles with fixed starter values.
Explain your choice
Try describing the reason for a move or action in one sentence. If the reason is unclear, revisit the rules before continuing.
Your goal
Place 1–4 once in each row and column while obeying every inequality.
Step by step
- Select an editable square.
- Read inequalities by their row/column coordinates below the board.
- Enter 1–4.
- Check puzzle verifies both Latin-square rules and inequalities.
Controls
Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution.
A useful example
r1c2 < r1c3 means row 1 column 2 is smaller than row 1 column 3.
Watch out for this
An inequality specifies order, not an exact difference.
Common questions
Can you show a concrete example?
r1c2 < r1c3 means row 1 column 2 is smaller than row 1 column 3.
What is included in this edition?
Twelve checked 4×4 puzzles with fixed starter values.
Which controls should I use?
Click or tap squares or graph edges. Number boards include a digit pad. Undo reverses the previous change; Check puzzle validates the solution.