iQUICKLY SOLVING JIGSAWEXPLORER PUZZLES	null	(FALSE)	0
i	null	(FALSE)	0
i2024-03-28	null	(FALSE)	0
i	null	(FALSE)	0
iBACKGROUND	null	(FALSE)	0
i	null	(FALSE)	0
iI was contacted this week by a geocacher called Dominik who, like me, loves	null	(FALSE)	0
igeocaching.... but hates it when the coordinates for a cache are hidden behind	null	(FALSE)	0
ia virtual jigsaw puzzle.	null	(FALSE)	0
i	null	(FALSE)	0
iA popular online jigsaw tool used by lazy geocache owners is Jigidi: I've come	null	(FALSE)	0
iup with several techniques for bypassing their puzzles or at least making them	null	(FALSE)	0
ieasier.	null	(FALSE)	0
i	null	(FALSE)	0
iDominik had been looking at a geocache hidden last week in Eastern France and	null	(FALSE)	0
ihad discovered that it used JigsawExplorer, not Jigidi, to conceal the	null	(FALSE)	0
icoordinates. Let's take a look...	null	(FALSE)	0
i	null	(FALSE)	0
IUnsolved approx. 1000 piece jigsaw puzzle.	/2024/03/jigsawexplorer-GCAN2YC-unsolved.jpg	danq.me	70
i	null	(FALSE)	0
iI experimented with a few ways to work-around the jigsaw, e.g. dramatically	null	(FALSE)	0
iincreasing the "snap range" so dragging a piece any distance would result in	null	(FALSE)	0
iit jumping to a neighbour, and extracting original image URLs from	null	(FALSE)	0
ilocalStorage. All were good, but none were perfect.	null	(FALSE)	0
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iFor a while, making pieces "snap" at any range seemed to be the best hacky	null	(FALSE)	0
iworkaround.	null	(FALSE)	0
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iThen I realised that - unlike Jigidi, where there can be a congratulatory	null	(FALSE)	0
i"completion message" (with e.g. geocache coordinates in) - in JigsawExplorer	null	(FALSE)	0
ithe prize is seeing the completed jigsaw.	null	(FALSE)	0
i	null	(FALSE)	0
IDialog box reading "This puzzle's box top preview is disabled for added challenge."	/2024/03/top-preview-disabled.png	danq.me	70
i	null	(FALSE)	0
iLet's work on attacking that bit of functionality. After all: if we can bypass	null	(FALSE)	0
ithe "added challenge" we'll be able to see the finished jigsaw and, therefore,	null	(FALSE)	0
ithe geocache coordinates. Like this:	null	(FALSE)	0
i	null	(FALSE)	0
iHACKAROUND	null	(FALSE)	0
i	null	(FALSE)	0
iHere's how it's done. Or keep reading if you just want to follow the	null	(FALSE)	0
iinstructions!	null	(FALSE)	0
i* Open a jigsaw and try the "box cover" button at the top. If you get the	null	(FALSE)	0
imessage "This puzzle's box top preview is disabled for added challenge.",	null	(FALSE)	0
icarry on.	null	(FALSE)	0
i* Open your browser's debug tools (F12) and navigate to the Sources tab.	null	(FALSE)	0
i* Find the jigex-prog.js file. Right-click and select Override Content (or Add	null	(FALSE)	0
iScript Override).	null	(FALSE)	0
i* In the overridden version of the file, search for the string -	null	(FALSE)	0
ie&&e.customMystery?tt.msgbox("This puzzle's box top preview is disabled for	null	(FALSE)	0
iadded challenge."): - this code checks if the puzzle has the "custom mystery"	null	(FALSE)	0
isetting switched on and if so shows the message, otherwise (after the :) shows	null	(FALSE)	0
ithe box cover.	null	(FALSE)	0
i* Carefully delete that entire string. It'll probably appear twice.	null	(FALSE)	0
i* Reload the page. Now the "box cover" button will work.	null	(FALSE)	0
i	null	(FALSE)	0
iThe moral, as always, might be: don't put functionality into the client-side	null	(FALSE)	0
iJavaScript if you don't want the user to be able to bypass it.	null	(FALSE)	0
i	null	(FALSE)	0
iOr maybe the moral is: if you're going to make a puzzle geocache, put some	null	(FALSE)	0
iwork in and do something clever, original, and ideally with fieldwork rather	null	(FALSE)	0
ithan yet another low-effort "upload a picture and choose the highest number of	null	(FALSE)	0
ijigsaw pieces to cut it into from the dropdown".	null	(FALSE)	0
i	null	(FALSE)	0
iLINKS	null	(FALSE)	0
i	null	(FALSE)	0
hJigidi	URL:https://www.jigidi.com/	(FALSE)	0
hMy first effort at defeating Jigidi	URL:https://danq.me/2021/08/26/jigidi-solver/	(FALSE)	0
1My second effort at defeating Jigidi	/posts/jigidi-helper	danq.me	70
hNew geocache GCAN2YC, which Dominick identified	URL:https://www.geocaching.com/geocache/GCAN2YC_pompiers-1	(FALSE)	0
hJigsawExplorer	URL:https://www.jigsawexplorer.com/	(FALSE)	0
.