Create a Challenge
Create a Custom Shikaku Challenge
Build a puzzle that feels worth sending. Choose the size, the difficulty, and a few small details, then generate one or more candidate boards before you share the challenge link.
Step by Step
Tell us what kind of challenge you want to send.
You choose the board size, the difficulty, whether the puzzle should be timed, and whether we should prepare one puzzle or three close options. Then you try them and keep the one worth sharing.
Step 1
Choose a board size
Smaller boards are easier to read quickly. Larger boards feel more demanding and more dramatic to share.
Your candidate challenges
Try the generated puzzle first. If it feels good and you can solve it, keep that one as the challenge you share.
Build a Shikaku Challenge Step by Step
This page keeps the process simple. Instead of throwing every option at you at once, it guides you through a few decisions in order. That makes it easier to shape the kind of puzzle you want without turning the experience into a settings panel.
Choose the Size and Feel of the Puzzle
Board size changes the mood of the challenge. A 6×6 board feels quicker and more approachable. An 8×8 board feels balanced and substantial. A 10×10 board feels more serious and asks for more patience. Difficulty adds another layer, helping you choose whether the challenge should feel friendly, balanced, or demanding.
Add a Personal Touch
A custom challenge becomes more memorable when it carries a little context. A short name, a message, or a timer can turn a plain puzzle into a small event between two players. These details should stay light, but they help the challenge feel chosen rather than generic.
Frequently Asked Questions
What makes this different from picking an official challenge?
This page lets you shape the puzzle first. It is better when you want control over size, difficulty, timing, or tone.
Do I need to solve the puzzle before I share it?
You do not have to, but it helps. A quick preview makes it easier to send a board that feels fun and fair.
Can I generate more than one option?
Yes. Comparing a few candidates is useful when you want a better puzzle instead of the first result.