--- a/src/app.html	2026-10-30 18:04:01.255625920 -0300
+++ b/src/app.html	2026-10-30 18:15:47.263713868 -0300
@@ -5,32 +5,17 @@
 		<link rel="icon" href="%sveltekit.assets%/favicon.png" />
 		<meta name="viewport" content="width=device-width, initial-scale=1" />
 
-		<!-- Primary Meta Tags -->
-		<meta name="title" content="Hexagonal pipes puzzles" />
 		<meta
-			name="description"
-			content="Rotate tiles to connect all the pipes into a single network."
+			http-equiv="Content-Security-Policy"
+			content="default-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline'; img-src 'self' data: blob:; font-src 'self' data:; worker-src 'self' blob:; connect-src 'self'"
 		/>
 
-		<!-- Open Graph / Facebook -->
-		<meta property="og:type" content="website" />
-		<meta property="og:title" content="Hexagonal pipes puzzles" />
-		<meta
-			property="og:description"
-			content="Rotate tiles to connect all the pipes into a single network."
-		/>
-		<meta property="og:image" content="https://hexapipes.vercel.app/og_image_v1.png" />
-		<meta property="og:image:width" content="1200" />
-		<meta property="og:image:height" content="630" />
-
-		<!-- Twitter -->
-		<meta property="twitter:card" content="summary_large_image" />
-		<meta property="twitter:title" content="Hexagonal pipes puzzles" />
+		<!-- Primary Meta Tags -->
+		<meta name="title" content="Hexagonal pipes puzzles" />
 		<meta
-			property="twitter:description"
+			name="description"
 			content="Rotate tiles to connect all the pipes into a single network."
 		/>
-		<meta property="twitter:image" content="https://hexapipes.vercel.app/og_image_v1.png" />
 
 		%sveltekit.head%
 	</head>
--- a/src/lib/footer/Footer.svelte	2026-10-30 18:04:01.243149984 -0300
+++ b/src/lib/footer/Footer.svelte	2026-10-30 18:15:35.292789816 -0300
@@ -1,16 +1,4 @@
-<div class="footer">
-	Created by @gereleth. Source code: <a
-		target="_blank"
-		rel="noreferrer"
-		href="https://github.com/gereleth/hexapipes">GitHub</a
-	><br />
-	Say hi to me on
-	<a target="_blank" rel="noreferrer" href="https://twitter.com/gereleth">Twitter</a>
-	or
-	<a target="_blank" rel="noreferrer" href="https://bsky.app/profile/gereleth.bsky.social">
-		Bluesky
-	</a>
-</div>
+<div class="footer">Created by @gereleth. MIT license.</div>
 
 <style>
 	.footer {
--- a/src/lib/header/Grids.svelte	2026-10-30 18:04:01.255189117 -0300
+++ b/src/lib/header/Grids.svelte	2026-10-30 18:16:58.276608347 -0300
@@ -8,15 +8,15 @@
 <div class="container">
 	<div class="grids">
 		<span>Grid:</span>
-		<a href="/{gridKind}/5" class:active={!wrap}>
+		<a href="#/{gridKind}/5" class:active={!wrap}>
 			{info.title}
 		</a>
 		{#if info.wrap}
-			<a href="/{gridKind}-wrap/5" class:active={wrap}>
+			<a href="#/{gridKind}-wrap/5" class:active={wrap}>
 				{info.title} wrap
 			</a>
 		{/if}
-		<a href="/play"> Other grids </a>
+		<a href="#/play"> Other grids </a>
 	</div>
 </div>
 
--- a/src/lib/header/GridsExamples.svelte	2026-10-30 18:04:01.254578935 -0300
+++ b/src/lib/header/GridsExamples.svelte	2026-10-30 18:16:58.275595405 -0300
@@ -7,7 +7,7 @@
 <div class="grids">
 	{#each gridKinds as gridKind}
 		{@const { url, title, exampleGrid, exampleTiles, sizes } = gridInfo[gridKind]}
-		<a href="/{url}/{sizes[0]}" class:active={page.url.pathname.startsWith(`/${url}/`)}>
+		<a href="#/{url}/{sizes[0]}" class:active={page.url.pathname.startsWith(`/${url}/`)}>
 			{title}
 			<ExamplePuzzle grid={exampleGrid} tiles={exampleTiles} />
 		</a>
--- a/src/lib/header/Header.svelte	2026-10-30 18:04:01.254783482 -0300
+++ b/src/lib/header/Header.svelte	2026-10-30 18:16:58.275907746 -0300
@@ -11,10 +11,10 @@
 		</svg>
 		<ul>
 			<li class:active={page.url.pathname === '/'}>
-				<a data-sveltekit-preload-data href="/">Home</a>
+				<a data-sveltekit-preload-data href="#/">Home</a>
 			</li>
 			<li class:active={page.url.pathname === '/daily'}>
-				<a data-sveltekit-preload-data href="/daily">Daily</a>
+				<a data-sveltekit-preload-data href="#/daily">Daily</a>
 			</li>
 			<li
 				class:active={page.url.pathname.startsWith('/hexagonal') ||
@@ -29,7 +29,7 @@
 					page.url.pathname.startsWith('/custom') ||
 					page.url.pathname.startsWith('/play')}
 			>
-				<a data-sveltekit-preload-data href="/play">Play</a>
+				<a data-sveltekit-preload-data href="#/play">Play</a>
 			</li>
 		</ul>
 		<svg viewBox="0 0 2 3" aria-hidden="true">
--- a/src/lib/puzzleWrapper/PuzzleInstanceWrapper.svelte	2026-10-30 18:04:01.253587286 -0300
+++ b/src/lib/puzzleWrapper/PuzzleInstanceWrapper.svelte	2026-10-30 18:16:58.275111643 -0300
@@ -138,7 +138,7 @@
 			window.localStorage.removeItem(instanceStoreName);
 		}
 		if (puzzleId !== -1) {
-			goto(`/${page.params.grid}/${page.params.size}`, { replace: true });
+			goto(`#/${page.params.grid}/${page.params.size}`, { replace: true });
 		} else {
 			pxPerCell = puzzle?.reportPxPerCell();
 			generatePuzzle();
@@ -237,7 +237,7 @@
 				Solved!
 			{/if}
 			<a
-				href="/{page.params.grid}/{page.params.size}"
+				href="#/{page.params.grid}/{page.params.size}"
 				data-sveltekit-reset="false"
 				onclick={newPuzzle}
 			>
--- a/src/routes/[grid=gridkind]/[size=integer]/[id=integer]/+page.js	2026-10-30 18:04:01.256847867 -0300
+++ b/src/routes/[grid=gridkind]/[size=integer]/[id=integer]/+page.js	2026-10-30 18:16:32.547405920 -0300
@@ -3,5 +3,5 @@
 /** @type {import('./$types').PageLoad} */
 export function load({ params }) {
 	// static instances were retired; old links lead to a fresh generated puzzle
-	redirect(301, `/${params.grid}/${params.size}`);
+	redirect(301, `#/${params.grid}/${params.size}`);
 }
--- a/src/routes/[grid=gridkind]/+layout.svelte	2026-10-30 18:04:01.257073789 -0300
+++ b/src/routes/[grid=gridkind]/+layout.svelte	2026-10-30 18:16:58.277860212 -0300
@@ -28,22 +28,22 @@
 
 	<div class="grids">
 		<span>Grid:</span>
-		<a href="/{gridKind}/{sizes[0]}" class:active={!wrap}>
+		<a href="#/{gridKind}/{sizes[0]}" class:active={!wrap}>
 			{info.title}
 		</a>
 		{#if info.wrap}
-			<a href="/{gridKind}-wrap/{sizes[0]}" class:active={wrap}>
+			<a href="#/{gridKind}-wrap/{sizes[0]}" class:active={wrap}>
 				{info.title} wrap
 			</a>
 		{/if}
-		<a href="/play"> Other grids </a>
+		<a href="#/play"> Other grids </a>
 	</div>
 
 	<div class="sizes">
 		<span> Size:</span>
 		{#each sizes as size}
 			<a
-				href="/{page.params.grid}/{size}"
+				href="#/{page.params.grid}/{size}"
 				class:active={page.url.pathname.includes(`/${page.params.grid}/${size}`)}
 			>
 				{size}x{size}
--- a/src/routes/[grid=gridkind]/+page.svelte	2026-10-30 18:04:01.256136724 -0300
+++ b/src/routes/[grid=gridkind]/+page.svelte	2026-10-30 18:16:58.277532453 -0300
@@ -4,7 +4,7 @@
 	import { page } from '$app/state';
 
 	onMount(async () => {
-		await goto(`/${page.params.grid}/5`, { replace: true });
+		await goto(`#/${page.params.grid}/5`, { replace: true });
 	});
 </script>
 
--- a/src/routes/+page.svelte	2026-10-30 18:04:01.257298961 -0300
+++ b/src/routes/+page.svelte	2026-10-30 18:16:58.277046525 -0300
@@ -29,24 +29,16 @@
 	</p>
 
 	<p>
-		It is usually played on a grid of squares. That variant is available for example on <a
-			href="https://puzzle-pipes.com"
-			target="_blank"
-			rel="noreferrer">puzzle-pipes.com</a
-		>
+		It is usually played on a grid of squares. That variant is available for example on puzzle-pipes.com
 		or in Simon Tatham's puzzle
-		<a
-			href="https://www.chiark.greenend.org.uk/~sgtatham/puzzles/js/net.html"
-			target="_blank"
-			rel="noreferrer">collection</a
-		>.
+		collection.
 	</p>
 
 	<p>This site however contains the same puzzle set on various grids:</p>
 
 	<GridsExamples />
 
-	<h2><a href="/hexagonal/5">Hexagonal pipes</a></h2>
+	<h2><a href="#/hexagonal/5">Hexagonal pipes</a></h2>
 
 	<p>
 		Hexagonal tiles provide more variety of tile shapes. But otherwise the logic stays the same.
@@ -75,7 +67,7 @@
 	</ul>
 
 	<p>
-		Try this small puzzle right here or solve <a href="/hexagonal/5">many more like this</a> in various
+		Try this small puzzle right here or solve <a href="#/hexagonal/5">many more like this</a> in various
 		sizes. Every puzzle here is guaranteed to have a unique solution.
 	</p>
 </div>
@@ -87,10 +79,10 @@
 <div class="container">
 	<p class="congrat" class:hidden={!hexSolved}>
 		Solved!
-		<a href="/hexagonal/5">Next puzzle</a>
+		<a href="#/hexagonal/5">Next puzzle</a>
 	</p>
 
-	<h2><a href="/hexagonal-wrap/5">Hexagonal wrap pipes</a></h2>
+	<h2><a href="#/hexagonal-wrap/5">Hexagonal wrap pipes</a></h2>
 
 	<p>
 		Wrap pipes are a challenging variation of the puzzle. The connections in this variant are
@@ -106,7 +98,7 @@
 	</p>
 
 	<p>
-		Try this small wrap puzzle here. There are many more <a href="/hexagonal-wrap/5"
+		Try this small wrap puzzle here. There are many more <a href="#/hexagonal-wrap/5"
 			>hexagonal wrap puzzles</a
 		> for when the regular variant isn't much of a challenge any more.
 	</p>
@@ -119,7 +111,7 @@
 
 <p class="congrat" class:hidden={!hexWrapSolved}>
 	Solved!
-	<a href="/hexagonal-wrap/5">Next puzzle</a>
+	<a href="#/hexagonal-wrap/5">Next puzzle</a>
 </p>
 <div class="container">
 	<h2>Changelog</h2>
@@ -146,45 +138,43 @@
 		<li>
 			<em>2025-06-18</em> Coming out of a long hiatus with a couple of new grids! Check out a mix of
 			hexagons, squares and triangles on a
-			<a href="/rhombitrihexagonal/5">rhombitrihexagonal grid</a>
-			or the pure minimalism of <a href="/triangular/5">triangular puzzles</a>.
+			<a href="#/rhombitrihexagonal/5">rhombitrihexagonal grid</a>
+			or the pure minimalism of <a href="#/triangular/5">triangular puzzles</a>.
 		</li>
 		<li>
-			<em>2024-01-21</em> New grid! Try some <a href="/snubsquare/5">snub square puzzles</a>.
+			<em>2024-01-21</em> New grid! Try some <a href="#/snubsquare/5">snub square puzzles</a>.
 			<ul>
 				<li>
-					This tiling resembles <a href="/etrat/5">etrat</a> because it has two squares and three
+					This tiling resembles <a href="#/etrat/5">etrat</a> because it has two squares and three
 					triangles meeting at every vertex. It's also a little like
-					<a href="/trihexagonal/5">trihexagonal</a> grid because a larger polygon is surrounded by triangles.
+					<a href="#/trihexagonal/5">trihexagonal</a> grid because a larger polygon is surrounded by triangles.
 				</li>
 				<li>Snub square puzzles are not quite etrat levels of evil but still pretty hard.</li>
 			</ul>
 		</li>
 		<li>
-			<em>2023-09-24</em> New grid! Try some <a href="/trihexagonal/5">trihexagonal puzzles</a>.
+			<em>2023-09-24</em> New grid! Try some <a href="#/trihexagonal/5">trihexagonal puzzles</a>.
 			<ul>
 				<li>Regular puzzles aren't that difficult but the wraps are rather challenging.</li>
 			</ul>
 		</li>
 		<li>
-			<em>2023-08-20</em> Fixed a <a href="https://github.com/gereleth/hexapipes/issues/102">bug</a>
+			<em>2023-08-20</em> Fixed a bug
 			in calculating "Average of 12" statistic for daily puzzles.
 		</li>
 		<li>
 			<em>2023-06-11</em> New grid! You've played with squares before, how about some
-			<a href="/cube/5">cubes</a>?
+			<a href="#/cube/5">cubes</a>?
 			<ul>
 				<li>
-					Thanks to <a href="https://github.com/gordonwoodhull" target="_blank" rel="noreferrer"
-						>Gordon Woodhull</a
-					> for the implementation!
+					Thanks to Gordon Woodhull for the implementation!
 				</li>
 				<li>Cubes difficulty is pretty gentle, there's plenty of new patterns to figure out.</li>
 				<li>Win animation is now "brighten to white and back" instead of hue rotation.</li>
 			</ul>
 		</li>
 		<li>
-			<em>2023-05-19</em> New grid with <a href="/etrat/5">elongated triangular tiling</a>.
+			<em>2023-05-19</em> New grid with <a href="#/etrat/5">elongated triangular tiling</a>.
 			<ul>
 				<li>
 					A combination of square and triangular tiles creates pretty challenging puzzles! These are
@@ -208,13 +198,9 @@
 				<li>
 					Touchpad zooming and panning should now work consistently with your page scrolling
 					behaviour. If you have further issues with touchpad controls please report them
-					<a
-						href="https://github.com/gereleth/hexapipes/issues/87"
-						target="_blank"
-						rel="noreferrer"
-					>
+					
 						here
-					</a>.
+					.
 				</li>
 				<li>
 					Decreased timeout for "click and hold" edgemark creation and for locking tiles in touch
@@ -228,7 +214,7 @@
 			<ul>
 				<li>
 					After a decent amount of work we support non-uniform grids! Try out the
-					<a href="/octagonal/5">octagonal</a> or <a href="/octagonal-wrap/5">octagonal wrap</a> pipes.
+					<a href="#/octagonal/5">octagonal</a> or <a href="#/octagonal-wrap/5">octagonal wrap</a> pipes.
 					They're quite a challenge!
 				</li>
 				<li>
@@ -242,7 +228,7 @@
 			<ul>
 				<li>
 					Play the classic variant of pipes:
-					<a href="/square/5">square</a> and <a href="/square-wrap/5">square-wrap</a>.
+					<a href="#/square/5">square</a> and <a href="#/square-wrap/5">square-wrap</a>.
 				</li>
 			</ul>
 		</li>
@@ -251,7 +237,7 @@
 			<ul>
 				<li>
 					You can now download a puzzle as a json file. Open the downloaded file on the
-					<a href="/custom">custom puzzle page</a>. If a daily is too hard you can let the solver
+					<a href="#/custom">custom puzzle page</a>. If a daily is too hard you can let the solver
 					have a go at it =).
 				</li>
 				<li>
@@ -286,11 +272,11 @@
 				</li>
 				<li>
 					Play puzzles of any NxN size by changing the number in the url. For example, go to <a
-						href="/hexagonal/50">/hexagonal/50</a
+						href="#/hexagonal/50">/hexagonal/50</a
 					> for 50x50 puzzles. Please tweet a screenshot at me if you complete something that huge =).
 				</li>
 				<li>
-					<a href="/custom">Custom puzzle page</a> now has a "branching" control. Low branching values
+					<a href="#/custom">Custom puzzle page</a> now has a "branching" control. Low branching values
 					create puzzles with long winding corridors, high branching leads to lots of intersections and
 					deadends. This affects puzzle difficulty: try a wrap puzzle with low branching if you want something
 					evil.
@@ -303,13 +289,9 @@
 				<li>
 					The settings can now be accessed through a button below the puzzle. This should make them
 					more
-					<a
-						href="https://github.com/gereleth/hexapipes/issues/60"
-						target="_blank"
-						rel="noreferrer"
-					>
+					
 						discoverable
-					</a>.
+					.
 				</li>
 			</ul>
 		</li>
@@ -318,7 +300,7 @@
 			<ul>
 				<li>
 					I've rewritten puzzle solving and generation logic from python to js. So now you can try
-					generated puzzles of any size at the <a href="/custom">custom puzzle page</a>.
+					generated puzzles of any size at the <a href="#/custom">custom puzzle page</a>.
 				</li>
 				<li>
 					The custom page doesn't currently have progress saving or timings so please don't start a
@@ -331,7 +313,7 @@
 			<em>2022-08-30</em> More minor updates:
 			<ul>
 				<li>
-					<a href="https://github.com/adamburgess" target="_blank" rel="noreferrer">Adam Burgess</a>
+					Adam Burgess
 					fixed a bug with seconds countdown display on daily puzzle page. Thanks =).
 				</li>
 				<li>
@@ -381,7 +363,7 @@
 			<em>2022-08-13</em> The timer now stops ticking when you leave the puzzle page or switch to a
 			different tab. It continues when you return to the puzzle. This should give more accurate
 			times on large puzzles. Thanks to
-			<a href="https://github.com/joshwilsonvu" target="_blank" rel="noreferrer">@joshwilsonvu</a> for
+			@joshwilsonvu for
 			the pull request.
 		</li>
 		<li>
--- a/src/routes/daily/+page.js	2026-10-30 18:04:01.258079814 -0300
+++ b/src/routes/daily/+page.js	2026-10-30 18:18:22.334750312 -0300
@@ -1,15 +1,25 @@
 import { error } from '@sveltejs/kit';
 
+// FredyGames: the daily puzzle files (static/_instances/daily) end on 2026-11-30. After that, and for the
+// days that have no file, the puzzle of the same day and month from the most recent year that has one is
+// used, so the Daily page keeps working.
 /** @type {import('./$types').PageLoad} */
-export async function load({ fetch }) {
+export async function load() {
 	const today = new Date().toISOString();
 	const year = today.slice(0, 4);
 	const month = today.slice(5, 7);
 	const day = today.slice(8, 10);
-	const url = `/_instances/daily/${year}/${month}/${day}.json`;
-	const response = await fetch(url);
+	const years = [year, '2026', '2025', '2024', '2023', '2022'];
+	let response = null;
+	for (const y of years) {
+		// relative to the page, not to the site root: the game is served from a subfolder
+		response = await fetch(new URL(`_instances/daily/${y}/${month}/${day}.json`, document.baseURI));
+		if (response.ok) {
+			break;
+		}
+	}
 
-	if (response.ok) {
+	if (response && response.ok) {
 		const data = await response.json();
 		return {
 			date: `${year}-${month}-${day}`,
@@ -21,6 +31,6 @@
 			comment: data.comment
 		};
 	} else {
-		error(response.status, '');
+		error(response ? response.status : 404, '');
 	}
 }
--- a/src/routes/daily/+page.svelte	2026-10-30 18:04:01.257870976 -0300
+++ b/src/routes/daily/+page.svelte	2026-10-30 18:16:58.278394433 -0300
@@ -213,10 +213,10 @@
 	<div class="next">
 		{#if solve.elapsedTime !== -1}
 			{#if timeTillNextPuzzle === 'now'}
-				<a href="/daily" onclick={() => document.location.reload()}>Next puzzle</a>
+				<a href="#/daily" onclick={() => document.location.reload()}>Next puzzle</a>
 			{:else}
 				Next daily puzzle in {timeTillNextPuzzle}.
-				<a href="/{data.grid}{data.wrap ? '-wrap' : ''}/5">Play some others for now</a>
+				<a href="#/{data.grid}{data.wrap ? '-wrap' : ''}/5">Play some others for now</a>
 			{/if}
 		{/if}
 	</div>
--- a/src/routes/play/+page.svelte	2026-10-30 18:04:01.258478366 -0300
+++ b/src/routes/play/+page.svelte	2026-10-30 18:16:58.278715066 -0300
@@ -9,7 +9,7 @@
 <div class="container play">
 	<h1>Choose your grid</h1>
 	<GridsExamples />
-	<h2>Make a <a href="custom">custom puzzle</a></h2>
+	<h2>Make a <a href="#/custom">custom puzzle</a></h2>
 	<ul>
 		<li>Experiment with generator settings</li>
 		<li>Watch the solver work</li>
--- a/vite.config.js	2026-10-30 18:04:00.851154759 -0300
+++ b/vite.config.js	2026-10-30 18:20:08.571372179 -0300
@@ -1,11 +1,11 @@
 // vite.config.js
-import adapter from '@sveltejs/adapter-vercel';
+import adapter from '@sveltejs/adapter-static';
 import { sveltekit } from '@sveltejs/kit/vite';
 import { defineConfig } from 'vitest/config';
 
 /** @type {import('vitest/config').ViteUserConfig} */
 const config = defineConfig({
-	plugins: [sveltekit({ adapter: adapter({ runtime: 'nodejs24.x' }) })],
+	plugins: [sveltekit({ adapter: adapter({ fallback: 'index.html' }), router: { type: 'hash' }, paths: { relative: true }, version: { name: '09274d5' } })],
 	test: {
 		globals: true,
 		environment: 'jsdom'