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Killer Sudoku Online killersudokuonline.com Live · Operational

Is Killer Sudoku Online down right now? Live status and outage tracker

No, Killer Sudoku Online is up.

No outage detected, and no user reports in the last hour.

Reports, last hour: 0
Usual at this hour: Almost none
Vs the hour before: –

User reports, last 24 hours, one bar per 15 minutes. Dashed line: the usual level. 96 normal · 0 elevated · 0 outage

Not working for you?

Updated 4 min ago · Data refreshes every 5 minutes

01 · User reports

0 reports in the last hour

From a public outage-reporting feed, counted in 15-minute windows. The verdict above is based on these.

Last 24 hours

Killer Sudoku Online outages and problems

User reports, last 24 hours

1 report in total, counted in 15-minute windows

No problem reports came in for Killer Sudoku Online in the last hour, and at this time of day there are usually almost none. Over the last 24 hours there were 1 report. There has been no spike in reports since 4 November. These are user reports from the UK, where most people report Killer Sudoku Online problems.

NormalClose to the usual level24 h · 1 report
ElevatedMore than 1.5 times the usual levelNone in this chart
OutageMore than twice the usual level and far above the day's averageNone in this chart
Usual levelWhat a usual day sees at that timeAlmost none at this time of day

Reports, last hour

Quiet

Uptime, 24 h

100.00%

No outage windows

Last outage

None

In the last 24 hours

Busiest 15 minutes

1 report, 13 h ago

Killer Sudoku Online status card: No, Killer Sudoku Online is up. User reports over the last 24 hours. — **Share this status**The picture people see when this page is shared: the answer and the last 24 hours of reports.
Image

In the past 24 hours, 1 user report came in for Killer Sudoku Online. Counting only the 15-minute windows with a spike big enough to count as an outage, that comes to 100.00% uptime for the day.

The busiest 15-minute window had 1 report, about 13 hours ago. That stays below our outage threshold, so it doesn't count as downtime.

No problems detected in the last 24 hoursReports for Killer Sudoku Online stayed at their usual level the whole time.

This month

Killer Sudoku Online in November 2026

Problem reports in November (since 4 November): 1

Monthly report for November 2026

People who report a problem with Killer Sudoku Online to the outage-report feed behind this page can tag what is affected. These are the categories they can pick; the feed shows no counts per category:

Login
Purchases
Server Connection
Game Play
Game Launch
Lag / Latency

Last 30 days

Killer Sudoku Online problem spikes, last 30 days

Since 4 November, Killer Sudoku Online had no outage spikes or periods of elevated reports.

A spike is a sharp rise in problem reports from users, kept exactly as this page showed it at the time. This history starts on 4 November 2026. Monthly reports for all services

Troubleshooting

How to fix Killer Sudoku Online not working

Killer Sudoku Online is up on our end, so if it won't work for you, the problem is most likely on your side. Work through these in order:

Your browser tries to reach killersudokuonline.com over your own connection, right now. Nothing is sent to us or stored.

Reload the puzzle page
Refresh the Killer Sudoku Online tab once, since a stuck puzzle grid can come from a half-loaded script. On Windows or Linux press Ctrl+F5; on Mac press Command+Shift+R.
Open it in a private window
Try the site without your saved cookies and extensions attached to the tab. In Chrome or Edge press Ctrl+Shift+N on Windows, or Command+Shift+N on Mac.
Clear its site data
If the grid opens but buttons or notes do not respond, remove only the saved data for killersudokuonline.com. In Chrome, open chrome://settings/siteData, search for killersudokuonline.com, then use the trash icon next to the site entry.
Check another browser or network
Open the same puzzle in a different browser, then try a mobile data connection if you were on Wi-Fi. If that works, restart your router and run ipconfig /flushdns in Windows Command Prompt before opening the site again.

While Killer Sudoku Online is down: what to use instead

Printed killer sudoku book A paper book keeps you playing when the site will not load, and you can mark cage totals with pencil.
The Times puzzles The puzzles section has Killer Su Doku, which helps if you already have access and want a similar grid.
Newspaper puzzle pages UK papers often carry sudoku variants, so a print or tablet edition can cover a short outage.
Offline sudoku app An app already installed on your phone is useful if you just want a number puzzle without waiting for the website.

About

What happens when Killer Sudoku Online goes down

Killer Sudoku Online is a games website for playing killer sudoku in a browser, used mostly by UK players who want a quick number puzzle. An outage interrupts puzzle loading and play, especially if the grid or its page scripts stop responding.

The first thing to break is often the puzzle page: it may hang on load or show a blank grid. If the homepage still opens, individual puzzles can still stall because the browser needs the site files for the grid and controls. There is no known official status page or help centre to check, so this page uses public outage reports sent by users to an outage-reporting service. The status compares 15-minute reporting windows over the last 24 hours with the service's usual level; it can show a partial or regional problem rather than a full site failure.

Servers and network

Killer Sudoku Online IP address, servers and network

Checking killersudokuonline.com from our server…

Questions

Killer Sudoku Online FAQ

Is Killer Sudoku Online down right now?

The status at the top of this page shows whether public user reports for Killer Sudoku Online are above their usual level. Those reports are counted in 15-minute windows over the last 24 hours, and this page does not collect them or monitor the service itself. If reports look normal but the game fails for you, refresh the tab, then try a private window or another browser. When it works on mobile data but not on your home connection, check your Wi-Fi, DNS, or router.

Why is the Killer Sudoku puzzle grid blank or stuck loading?

A blank grid often points to a browser script, cached file, or extension blocking part of the game page. Reload without browser add-ons, then clear site data for the website if the grid still does not draw. If the same blank grid appears on another device and another connection, a wider service problem is more likely.

Why can I open the page but not enter numbers in the grid?

The grid can lose focus after a tab sleeps, a phone keyboard closes, or the page is left open for a long time. Tap outside the grid and back into a cell, or reload the puzzle page before trying again. On desktop, reset browser zoom if clicks land in the wrong squares.

Why are cage outlines or totals hard to see on my phone?

Killer Sudoku depends on cage borders and small total numbers, so a narrow screen can make the puzzle hard to read. Reset zoom, turn the phone sideways, or try a tablet or desktop screen. If the styling still looks broken, clear cached site data and reload the page.

Can I use Killer Sudoku Online on a UK phone or tablet browser?

The website and games category make a browser-based puzzle site certain, but I do not have verified details for native apps or account systems. Use an updated mobile browser, and test both Wi-Fi and mobile data if the page stalls. If only one UK broadband connection fails, the issue may be local to that connection rather than the game site.

Official channels

Contact Killer Sudoku Online support

Websitekillersudokuonline.com

Tip: Killer Sudoku Online doesn't list a public status page that we know of, so its help centre and the report chart on this page are the best places to check.

For your site

Put the Killer Sudoku Online status on your site

Paste one of these into a web page, a blog post or a README: a small badge, or a card with the chart. Both show the same status as this page, based on user problem reports, and link back here.

HTML

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Markdown, for README files

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A live card with the chart

The status, reports in the last hour and the last 24 hours, updated every 5 minutes. Use the frame, or the image where frames are not allowed, such as newsletters.

Frame

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<p><a href="https://isitdownrightnow.app/services/killer-sudoku-online/">Killer Sudoku Online status</a> from IsItDownRightNow.app</p>

Image, updated about every 10 minutes

<a href="https://isitdownrightnow.app/services/killer-sudoku-online/"><img src="https://isitdownrightnow.app/share/killer-sudoku-online.png" alt="Killer Sudoku Online status: problem reports over the last 24 hours" width="600" height="315" loading="lazy"></a>

Markdown image, for README files

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Badge, frame and image load no scripts from other sites and set no cookies; people who see them on your page load them from our server. More for journalists.

How we track Killer Sudoku Online

The status on this page comes from user-submitted problem reports for Killer Sudoku Online, counted in 15-minute windows over the last 24 hours. Each window is compared with the normal level for Killer Sudoku Online, so a few complaints on a quiet day don't trigger anything, but a sudden jump well above normal does.

When reports climb well above normal, the status here changes to partial outage or major outage and the chart moves with it. Killer Sudoku Online doesn't publish a public status page that we know of, so user reports are often the quickest sign that something is wrong on their side.