Help and contact

Spotted a mistake? Tell us.

Most messages we get report a mistake in a puzzle or on a page. We fix it, and we do not always write back, so a report is never a bother.

Questions are welcome too. A few answers sit below, and the form takes questions as well.

Report a mistake or ask a question

Every puzzle has an ID under the board. Reporting a puzzle? Include the ID, so we can check it.

Does my child need an account?
Without an account: your child can take lessons and solve puzzles right away.
With an account: the progress is saved, the stats are shown, and the artifacts and coins are kept. A child creates it at home with a parent.
How does my child earn coins?
Every passed activity ends with an artifact, and each activity has its own artifacts to collect. In the Bank, artifacts are swapped for coins, and coins are spent in the Market.
My child passed a test, but the sticker is still faded.
The test is taken twice, once as White and once as Black. The sticker turns to full color when both are passed. If both are passed and it is still faded, write to us with the level and the Chess Skill.
Can anyone contact my child through the site?
No. The site has no chat and no ads, and nobody can reach your child through it. The rest is in the privacy policy.
We run a club or a school. Where do we start?
On the Schools and clubs page: group sets, test sheets, and your own edition for a larger program.