Streak · 10 days+200 XP
10-Day Puzzle a Day Streak
Solve one puzzle every day for 10 days, such as a crossword, sudoku or logic grid. Check in after each one.
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Games · Facts & stats · iChallenge network
Challengeware
Daily facts and stats about puzzles and brain games, plus real challenges to put them to work.
Today's 3 challenges
In a 3×3 magic square using the numbers 1 to 9, what does every row, column and diagonal add up to?
You went
Level1Rookie
XPPlay a round to earn XP
Streak0days
LeagueBronzeweekly
Daily #42Resets at midnight UTC
Today's round
- 5 questions
- 20s each
- 0 played today
One ranked attempt per day. Practice as much as you like.
Challenges
Join one, log your days or post your proof. Finishing earns XP and the Finisher badge.
Proof+250 XP
Make Your Own Puzzle
Create a word search, crossword or logic puzzle for a friend and post a photo link or short write-up of how they did.
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Proof+250 XP
Solve the Tower of Hanoi
Make a Tower of Hanoi from coins or paper discs and solve it with 4 discs in 15 moves. Post a short write-up.
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By the numbers
Live counts from ChallengeWare.com. All arena stats →
Facts in the pack12
Visitors, 30 days85
Challenge joins36
Leaderboard
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Badges
Earned on any arena, shown on your profile everywhere.
First RoundFinish your first daily round.
FlawlessAnswer every question in a round correctly.
LightningA perfect round in under 25 seconds.
On a RollPlay 3 days in a row.
Week WarriorPlay 7 days in a row.
UnbreakablePlay 30 days in a row.
ExplorerPlay daily rounds in 5 different arenas.
GlobetrotterPlay daily rounds in 25 different arenas.
PolymathPlay daily rounds in 5 different topics.
In the ArenaJoin your first challenge.
FinisherComplete a challenge.
RecruiterInvite a friend who finishes a round.
CaptainInvite 5 friends who finish a round.
PodiumFinish a day in an arena's top 3.
ChallengerReach level 10.
Profile SavedSave your progress with an email.
Save your progress
Add your email to keep your level, streak and badges if you switch devices, and carry them to every iChallenge arena. One email when you save; no spam.
Put a prize on a challenge
Fund a prize on ChallengeWare.com and your brand sits on the challenge card, the leaderboard and every finisher's share. Prizes only appear once they're funded, so players can trust what they see.
- Pick the challenge and the prize
- We review entries before a funded prize is awarded
- You get finisher and engagement numbers after it closes
Current sponsors
Questions
Which eras are covered?
Rotating rounds across ancient to modern, weighted to this site's theme.
Can educators use this?
Yes — free for classrooms.
How does the daily round work?
Everyone on this arena gets the same five questions each day, from easy to hard. You get one ranked attempt; practice rounds are unlimited.
How is my score calculated?
100 points per correct answer, up to 50 more for answering quickly, a combo multiplier for answers in a row, and 150 bonus points for a perfect round.
Is it free?
Yes. Playing, streaks, badges and leaderboards are free. Some challenges carry a sponsor-funded prize; the challenge card shows it when one is funded.