Chesspy
Place rooks, bishops and knights so every numbered square is attacked exactly that many times.
Every day: One mission a day, the same for everyone: twenty boards in a row from 3x3 to 6x6 with three hearts, and a Top % for the day when you finish. Sunday's S-Rank Mission ends on 7x7 boards. New puzzle: Once a day (the listing does not state the time).

Chesspy is a daily chess-deduction puzzle for iPhone. You place chess pieces, called agents, so that each numbered square is attacked by exactly its number and every 0 stays safe. The daily mission is twenty boards with three hearts, the same for everyone.
About Chesspy
Chesspy borrows chess pieces but needs no chess. Each board has numbered target squares. You place agents so that every target is attacked by exactly as many agents as its number; a 0 marks a safe square that nothing may attack. The rook attacks along rows and columns and the bishop along diagonals, both all the way to the edge and straight past other agents. From board 10 the knight joins in with its L-shaped jump. Every board has one solution that can be reached by logic.
The daily is called Today's Mission: twenty boards in a row, growing from 3x3 to 6x6, the same for everyone. You have three hearts. Attacking a target too many times turns its number red and costs a heart, and losing all three ends the mission; moving or removing an agent is always free. At the end you see your score out of 20, your time and your Top % for the day, and you can share a result card of your twenty boards. On Sundays the S-Rank Mission starts at 4x4 and finishes with five 7x7 boards.
After the mission there is an Unlimited mode with endless boards up to 7x7, two free runs a day, plus streaks that forgive one missed day a week, achievements that unlock agent designs, a colour-blind palette and a dark mode. A three-board tutorial teaches the rules.
Chesspy is made by Jaewon Seo under the name 037 and came out at the end of September 2026, in English and Korean. It has no ads and no account. A one-time Pro purchase adds unlimited runs, past missions, every agent design and detailed stats, but never changes a daily score.
How to play Chesspy
- Open Today and start the day's mission.
- Read the numbers: each target must be attacked by exactly that many agents, and a 0 by none.
- Place rooks and bishops (and knights from board 10) on the board to meet every number.
- Move or remove agents freely; only over-attacking a target costs one of your three hearts.
- Clear as many of the twenty boards as you can, then see your Top % and share your result.
Screenshots


Tips
- Start with the 0 squares: every row, column or diagonal through them is off limits for the pieces that would reach it.
- Remember rooks and bishops attack right past other agents, so one piece can hit several targets in a line.
- Check the piece tray: it tells you how many of each agent the board needs.
- When the knight arrives, look at the squares an L-jump away from each target before placing it.
Questions
Is the Chesspy mission the same for everyone?
Yes. Everyone gets the same mission each day, and finishing shows your Top % for the day.
Do I need to know chess?
No. Only the rook, bishop and knight moves are used, and a short tutorial shows them.
Is Chesspy free?
Yes, with no ads or account. A one-time Pro purchase adds unlimited play, past missions, designs and stats, and does not affect daily scores.
What is different on Sundays?
The S-Rank Mission starts at 4x4 and its last five boards are 7x7.
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