3268: Offside

Offside

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Title text: The arbiter gave my knight a red card for capturing with cleats up :(

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Explanation

The comic features a standard chessboard with a game in progress. On it is a horizontal dashed red line equipped with a red-and-yellow checkered flag on the right. This represents the implementation of the offside rule of association football (soccer) in a chess match.

In soccer, an attacking player cannot simply wait right next to the opponent's goal for a pass; they must not be beyond the opponent's defensive line when the ball is passed to them. On replays, this is often illustrated by showing a line, level with the last defender, superimposed across the pitch. Assistant referees (or 'linesmen') run along the sidelines to monitor this boundary. When an attacking player receives the ball having been in an offside position, the official on the sidelines raises a flag (which is often checkered red-and-yellow) to signal a violation to the head referee.

In this chess adaptation, Randall draws this "offside line" horizontally across the board, tracking the position of Black's least advanced pawns (the 'last defender'). The flag on the dashed line indicates that a linesman has flagged the match. The White rook moved deep into Black's territory (indicated by the yellow highlighting on the square) to position itself to put the Black king in what would normally be checkmate. However, because the rook crossed the dashed offside line ahead of the defensive line of black pieces, the move was disallowed. The offside line does not coincide with the border between the squares, but apparently depends on the exact position of the opponent's pieces. In some situations an "offside checkmate" could be avoided by sloppily-placed pieces.

The complexity of the offside rule is notorious (for not entirely deserved reasons), as it is not an actual offence for a player to be in an offside position, and only becomes so when they are subsequently involved in active play (typically, this is upon being passed the ball, but may also be judged to include distracting/obscuring the goalkeeper or other activities more or less loosely at the discretion of the referee). Its original purpose was to deter certain undesirable playing styles, such as "goal hanging", that were considered unsporting, but it adds several complications to how the referee (aided or not by supporting linesmen, or even VAR) has to control the match, and players/supporters may have their own interpretations. Repeated tweaking of the fine detail of of how the rule is implemented has not helped.

The basic premise is that when a ball is kicked forward to an attacker (excepting when that contact is certain other penalty kicks or throw-ins), they must have been 'onside' at the time of that last touch, regardless of whether they then run beyond the appropriate defender (or the defender runs the opposite way past the attacker) to actually take possession of the ball and then commence to score a goal. A player who was offside may become onside between the original start of the pass and receiving it, to completely negate the issue. Most of the tactics (and potential counter-tactics by the team not in possession) rely upon careful timing and balancing of such player positioning to create/remove such opportunities to be in a position to score a goal, or at least be closer to doing so. The result of an offside violation is the resetting of play to where the ball was at the time, disallowing any goal scored following that point and an (indirect) free kick given to the defenders. But it does not otherwise require the offending player(s) to be 'carded' (officially reprimanded, on or off the field).

The title text furthers the soccer reference. In association football, a “cleats up” tackle occurs when a player lunges into a challenge with the bottom of their boots (typically featuring hard studs, for better traction on the grassy/muddy pitch) dangerously exposed and liable to injure the opposing player, intentionally or not. This play should result in the referee issuing an immediate red card. In chess, an arbiter is the referee of a tournament. The title text implies that the player’s knight made an aggressive leap to capture a piece, forcing the arbiter to eject the piece. Of course, in chess, the whole point of such a move is to take out the opponent's piece, unlike in soccer, where the objective should be to win the ball.

The comic's publication coincides with the 2026 FIFA World Cup. It is part of a series of sports-themed comics Randall released during the tournament season, including 3260: Messi and 3262: Sports Commentary. Randall previously included the offside rule in 2705: Spacetime Soccer.

Transcript

This is one of 30 incomplete transcripts: Don't remove this notice too soon. If you can fix this issue, edit the page!

[A single-panel comic showing a standard 8-by-8 chessboard, with the position 4Rk2/8/2p2p2/1p2PNbB/B2pn2n/1Q1P4/r4P2/3K4 b, with the most recent move of the white rook from e7 (green background) to e8 (yellow background). The black king on f8 is in check from the white rook on e8, and trapped by the white knight on f5, the white bishop on h5, and redundantly the white queen on b3. A horizontal, dashed red line cuts across the chessboard above the sixth rank, where the least advanced black pawns are. On the right-hand side of this line, past the edge of the board, is a checkered red-and-yellow soccer referee's flag.]

[Caption below panel:]

I thought I had checkmate, but I didn't realize my rook was offside.

Trivia

The highlighted move of the white rook shows that it was already offside before it moved, because it started out on e7, which is still past the red line. Though this might not matter if it was not considered 'in active play' at the time (as per the rules of football). It would have threatened most of the squares that the king might have wanted to move to (the respective queen threatened the other free one, and a knight will have protected the rook from being taken by the king in its original position), but was not actively contributing to any check or check-mate. It would, at most have "gained an advantage", in that position, one of the less obvious criteria for the referee to possibly judge in football.

Had it moved from e6, instead, it would not have been offside before it made its move, and as an analogue to the situation in football (where, if the player is not offside when the ball is initially passed to where they will be, they are not offside when they do meet the passed ball and take control of it) this might have been similarly allowable.

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Discussion

IWantChechmate made a video on this exact subject. https://www.youtube.com/watch?v=ucGhD2hC_6s&t=479s 107.128.24.23 01:28, 10 July 2026 (UTC)

Finally the site's back! GSLikesCats307 (talk) 09:36, 10 July 2026 (UTC)

How long was it down? I did not realize it was down until it must have been down some time, and now when I'm back it is up and must ha<ve been for at least three days. Thought I had been thrown out... Which would have been bad given I'm the only active admin... Kynde (talk) 11:55, 13 July 2026 (UTC)

It was down completely for most of a week, then it came back up for just an hour or so, went down again, and then came back but no edits could be committed for a few days more. 82.13.184.33 12:04, 13 July 2026 (UTC)

It was last Monday (6th) that I think it went totally belly-up. There'd been a bit of the recently expected "Cannot access at this time" awkwardness over the preceding weekend, IIRC, but then a few few more edits (and half a dozen of the those spam-type/never-posting 'new users' creating accounts) happened sometime on the Monday.

The message led me to believe that someone had managed to delete a vital caching/indexing page at the very heart of the Wiki (not normally directly accessed by readers/editors, which I put down to being overloaded with traffic and maybe even a stealth attempt to try to update the software version (hacking in, hence the overloading, but doing a bad job of patching it).

But, with the information given just today, I've decided it's probably just that the regular Wiki backend had just tried to update this file while being right up to the storage limit and so had deleted/renamed the old one, but then had no room to create the new copy. So ended up functionally bricked (for everything other than just reading).

Three or four 'mirrors' popped up (luckily, it was still readable, so could be 'unofficially copied') and then Jeff was finally contacted and something was done to get the original site-backend working again (maybe deleting some old 'deleted pages' more permanently? - that'd be one of my own possible 'fixes', if I had the access to do so).

But then there was the problem of at least two 'active' versions (and I lost track of two of the other mirrors, but the fourth was always RO anyway).

It might have been better to have had an ETA on it, but the notice added to the two main sites as they were temporarily locked for editing was encouraging. And I know that there's going to have been a lot of work (and even more planning and decision-making!) behind what happened next.

There's a few problems with the enhanced anti-BOT measures (I'm going to have to copy this message to text-buffer, so I don't have to retype this from scratch if/when the repeated Validation process prevents me from posting anywhere as easily as I used to be able to ((yep, I had to do just that!)) ), and maybe a few other things that need looking at, but I think we're over the worst of the recent hump. And you should definitely consider being (co-)Admin again, Kynde. I know you can't always be here, and you may not be able or willing to take on the more onerous tasks with the far more in-depth Admin levels, but you've proven yourself reliable where it counts. (It's up to the current sysop(s) and bureaucrats, of course, and my word means absolutely nothing. But they look willing, I'm saying this to persuade you, not them. :) 92.23.5.229 21:04, 13 July 2026 (UTC)

Hi Kynde, please see explain xkcd:Site Transfer Announcement. Contact me, I'd love to talk! Celene (talk) 19:05, 13 July 2026 (UTC)

"Cleats"? Them's studs, my guy. Yorkshire Pudding (talk) 12:12, 10 July 2026 (UTC)

Yeah, I know what you mean. "Cleats", to me, suggests rows of linear (mostly transverse) protusions, like on the bottom of walking boots/shoes (though modern ones of those also go for 'studded' elements), rather than clumps of spikes/truncated-spikes.

But I suspect we're separated-by-a-common-language, again, with the 'Merkin terminology being otherwise. 82.132.236.148 14:22, 10 July 2026 (UTC)

Could this be related to "Chess But You Can't Go Offside" by iwantcheckmate, which came out a couple days before the comic? They seem closely related in theme and time, in a way I haven't seen anywhere else, but at the same point they also seem to have slightly different interpretations of the offside rule (this comic seems to interpret it by the rank of defenders, while the video interprets it by board distance to the nearest defender). 198.73.70.136 18:34, 10 July 2026 (UTC)

Is this at all a realistic game situation? Say, what was the last move of Black? 2001:2062:19e:3700:5281:40ff:fe97:7efa (talk) 10:07, 13 July 2026 (UTC) (please sign your comments with ~~~~)

I came here to say the above (unrealistic game situation). I cannot construct a scenario where black's last move could not have been to take the queen with check. I believe the position is possible and legal though.

The prior move itself must have been a capture on e8, likely also a forced move due to check. 52.213.77.206 07:28, 15 July 2026 (UTC)

Could this be related to Norway's offside in Brazil v. Norway the day prior? In the full broadcast, you could see the Norwegians were clearly excited about their goal and then realizing they offsided, so it fits the comic perfectly. 193.69.216.164 17:39, 20 July 2026 (UTC)

"Its original purpose was to deter certain undesirable playing styles, such as "goal hanging", that were considered unsporting" Is that true? I thought it was more that football shares common ancestry with rugby and originally it was not legal to pass forward at all, so the offside rule is a relaxed version of that. 51.142.178.58 13:58, 23 July 2026 (UTC)

The rules of predecessor games varied widely, from no offside law at all (in one example, two players were permanently positioned near the opponent's goal), through to very strict versions that prevented you being in front of the ball at all, regardless of where the ball was played to. But all those various rules (apart from the no offside, obviously) were themselves intended to discourage players from hanging around in extreme offensive positions because it was considered unsporting. When the rules of Association Football were codified, they selected one approach to curtailing this behaviour; when those of Rugby Football were codified they chose another. 82.13.184.33 14:54, 23 July 2026 (UTC)
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