Run Detail

completedmuse-glimmer-30b

Unscored

Every model's answer from this round

Recorded for these videos

17:31

Testing Gemini 3.8 Flash on Real Coding Challenges (vs. other models)

Sep 2, 2026 · YouTube

17:37

Tencent Hy4 Preview Tested: Is It Really Better Than Kimi K3 and GLM 5.3?

Aug 28, 2026 · YouTube

23:58

Qwen 3.8 Flash Tested: UI, Coding, Physics & more - compared to Opus 5, Sol Pro, Grok

Aug 27, 2026 · YouTube

Provider

openrouter

Challenge Version

v1.0

Turns

Duration

61.3s

Total Tokens

7,933

Input Tokens

1,552

Output Tokens

6,381

Reasoning Tokens

3,726

Reasoning Effort

medium

Cached Input Tokens

Est. Cost

$0.0101

Started

8/26/2026, 11:05:04 AM

OR Provider

Together

Finish Reason

stop

Generation ID

gen-1787742304-ZK7W7vEJVuJ03nFm258K

Turns (1)

Turn #1

1,552 in6,381 out3,726 reasoning48 cached7,933 total61.1s

user

Turn Two Cards

Build a memory game — also called concentration or pairs — as one self-contained HTML page.

The theme is fascinating animals. You choose the eight animals and the art style.

The game

A 4×4 board: 16 cards, all face down.
8 animals, each on exactly 2 cards.
Clicking a face-down card turns it face up.
At most two cards are face up at once.
If the two match, they stay face up.
If they do not match, they turn face down again after a short pause.
The game is won when all 8 pairs are face up.
Card positions are shuffled at the start of every game.

The player must be able to see how many moves they have made and how many pairs are left.

When a pair is matched, show that animal's fact.

When the game is won, say so clearly.

Controls

Clicking a card is the main interaction.

You may add exactly one button: New game.

Do not add:

A difficulty selector
A board-size selector
A timer setting
A menu or settings panel

The animals

Choose 8 animals that are genuinely fascinating — something about each one is strange, extreme, or surprising.

For each animal, provide:

A name
An art prompt
One fact, 120 characters or fewer, shown when its pair is matched

The facts must be true. They will be checked.

Do not use the eight most obvious zoo animals. Lion, tiger, elephant, giraffe, panda, penguin, dolphin and zebra are all forbidden.

Artwork

You do not create the artwork yourself. You write the prompts, and an image model draws them afterwards.

The art is delivered as one PNG:

art/cards.png

The file is a 2048×2048 3×3 contact sheet:

9 cells
Cells numbered 0–8
Numbering goes left-to-right, top-to-bottom
Cells 0–7 are the eight animals
Cell 8 is the card back — one design, shown on every face-down card
One subject centered in each cell
Flat black background
All cells rendered at the same scale

The grid layout, numbering, and background are fixed. Your job is to specify what belongs in each cell.

The path art/cards.png must appear exactly once in your HTML.

You may slice it with CSS background positioning, a canvas, clipped elements, or another technique.

Because the PNG has a black background, make sure the artwork sits properly on your card design.

Missing artwork

The game must be playable before art/cards.png exists.

If the image cannot be loaded, each face-up card must show a readable fallback — the animal's name, a drawn shape, or a styled placeholder. Blank cards are not acceptable, because a memory game with blank faces cannot be played at all.

Optional extra art

You may request one additional image, such as a table surface or background.

It must use the form art/<id>.png and it must be optional decoration — the page must look finished without it.

URL test mode

The page must support one URL mode.

`#demo`

Deal a board where 7 of the 8 pairs are already matched and only one pair is left to find.

This exists so the win can be filmed without playing a whole game.

It must be a real board state that the normal game logic plays out — not a fake animation.

Technical restrictions

The game must be a single HTML file.

It must:

Work offline
Run by double-clicking the HTML file
Require no build step
Use no CDN
Use no framework
Use no external stylesheet
Use no external fonts
Use no external scripts
Use no external images except the specified art/ files
Make no network requests at runtime

Do not use:

localStorage
sessionStorage
Cookies
indexedDB

The page must have no scrollbars at any window size. The board should scale to fit whatever space it is given.

Sound is optional. If you add any, generate it with the Web Audio API — no audio files.

Things to avoid

Emoji, anywhere. Not as card faces, not as buttons, not as decoration.
Card faces made of text or symbols instead of the artwork.
A board that reflows into a single column and has to be scrolled.

Required response

Your response must contain exactly these four sections.

The pitch

One line: what the game is called and what it looks like.

The game

Provide exactly one fenced html code block containing the complete HTML page and nothing else.

The art

Provide exactly one fenced json code block using this structure:

{
  "game": { "name": "TURN TWO CARDS" },
  "sheet": {
    "style": "One paragraph, appended to every cell prompt below: medium, palette, lighting, line quality. This is what makes nine separate images look like one deck.",
    "cells": [
      {
        "cell": 0,
        "id": "axolotl",
        "name": "Axolotl",
        "role": "animal",
        "prompt": "What to draw in this cell. One animal.",
        "fact": "It regrows lost limbs, and even parts of its brain, without scarring."
      },
      { "cell": 8, "id": "back", "name": "Card back", "role": "back", "prompt": "The pattern on the back of every card." }
    ]
  },
  "extras": [{ "id": "table", "aspect": "16:9", "prompt": "..." }]
}

Rules:

cells contains exactly 9 entries.
cell values are 0–8 with no gaps or duplicates.
Cells 0–7 have "role": "animal" and a fact.
Cell 8 has "role": "back" and no fact.
id is a single lowercase token and is unique.
fact is 120 characters or fewer.
extras may contain at most one entry, or be left out.
aspect must be one of: 16:9, 9:16, 1:1, 3:2, 2:3, 4:3, 3:4

The JSON block must contain no prose and no comments, because it is parsed automatically.

The notes

Four bullets:

Before the art arrives: what a card face shows while art/cards.png is unavailable.
On a win: what happens.
Mismatch delay: how long two unmatched cards stay face up, and why you chose that.
Fact sources: one line on how confident you are in the eight facts.

assistant

The pitch

Turn Two Cards is a minimalist 4×4 memory match of eight bizarre animals with facts revealed on each match.

The game

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Turn Two Cards</title>
<style>
:root{
  --cards:url('art/cards.png');
  --bg:#0b0b0c;
  --card:#1a1a1d;
  --text:#e8e8ea;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;overflow:hidden}
body{display:flex;align-items:center;justify-content:center}
.wrap{width:min(92vmin,92vh);display:flex;flex-direction:column;gap:1.2vmin;align-items:center}
header{display:flex;gap:2vmin;align-items:center;justify-content:space-between;width:100%}
h1{font-size:clamp(16px,3vmin,28px);margin:0;font-weight:600;letter-spacing:.02em}
.stats{font-size:clamp(12px,2vmin,16px);opacity:.9}
button{appearance:none;border:0;background:var(--card);color:var(--text);padding:.6em 1.1em;border-radius:.6em;font-size:clamp(12px,2vmin,16px);cursor:pointer}
button:active{transform:scale(.98)}
.board{display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(4,1fr);gap:1.2vmin;width:100%;aspect-ratio:1/1}
.card{position:relative;border-radius:1.2vmin;background:var(--card);overflow:hidden;cursor:pointer;transform-style:preserve-3d;transition:transform .25s}
.card .face{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background-repeat:no-repeat;background-position:center;background-size:300% 300%}
.card .back{background-image:var(--cards);background-position:-200% -200%}
.card .front{background-image:var(--cards)}
.card .label{position:absolute;inset:0;display:none;align-items:center;justify-content:center;text-align:center;padding:.4em;font-size:clamp(10px,1.8vmin,14px);font-weight:600;pointer-events:none}
.no-art .card .label{display:flex}
.no-art .card .face{background:none!important}
.card.revealed{transform:rotateY(180deg)}
.card.matched{opacity:.6;cursor:default}
.fact{font-size:clamp(12px,2vmin,16px);min-height:2.2em;text-align:center;opacity:.9}
.win{position:absolute;inset:0;display:none;align-items:center;justify-content:center;background:rgba(0,0,0,.7);font-size:clamp(20px,5vmin,40px);font-weight:700}
.win.show{display:flex}
#sprite{position:absolute;width:1px;height:1px;overflow:hidden}
</style>
</head>
<body>
<div id="sprite"></div>
<div class="wrap">
<header>
<h1>Turn Two Cards</h1>
<div class="stats"><span id="moves">Moves: 0</span> · <span id="pairs">Pairs left: 8</span></div>
</header>
<div class="board" id="board"></div>
<div class="fact" id="fact"></div>
<button id="new">New game</button>
<div class="win" id="win">You matched all pairs</div>
</div>
<script>
const animals=[
 {id:'axolotl',name:'Axolotl',fact:'It regrows lost limbs, and even parts of its brain, without scarring.',cell:0},
 {id:'tardigrade',name:'Tardigrade',fact:'Can survive extreme radiation, vacuum, and temperatures from -272°C to 150°C.',cell:1},
 {id:'mantis-shrimp',name:'Mantis Shrimp',fact:'Packs a punch with claws that strike faster than a .22 caliber bullet.',cell:2},
 {id:'vampire-squid',name:'Vampire Squid',fact:'Not a squid, and not a vampire; it glows to confuse predators in the deep.',cell:3},
 {id:'pangolin',name:'Pangolin',fact:'Covered in keratin scales and rolls into a ball when threatened.',cell:4},
 {id:'okapi',name:'Okapi',fact:'Forest giraffe relative with zebra-striped hindquarters hidden in the jungle.',cell:5},
 {id:'aye-aye',name:'Aye-aye',fact:'Uses a bony finger to fish grubs from wood, the only primate to do so.',cell:6},
 {id:'glass-frog',name:'Glass Frog',fact:'Translucent belly lets you see its heart and liver beating inside.',cell:7}
];
const boardEl=document.getElementById('board');
const movesEl=document.getElementById('moves');
const pairsEl=document.getElementById('pairs');
const factEl=document.getElementById('fact');
const winEl=document.getElementById('win');
const newBtn=document.getElementById('new');
let cards=[],flipped=[],moves=0,matchedPairs=0,lock=false;

function cellPos(cell){
 const c=cell%3, r=Math.floor(cell/3);
 return `-${c*100}% -${r*100}%`;
}
function makeDeck(){
 const deck=[];
 animals.forEach(a=>{
  deck.push({animal:a,matched:false,revealed:false});
  deck.push({animal:a,matched:false,revealed:false});
 });
 for(let i=deck.length-1;i>0;i--){
  const j=Math.floor(Math.random()*(i+1));
  [deck[i],deck[j]]=[deck[j],deck[i]];
 }
 return deck;
}
function render(){
 boardEl.innerHTML='';
 cards.forEach((c,i)=>{
  const el=document.createElement('div');
  el.className='card';
  el.dataset.i=i;
  const back=document.createElement('div');
  back.className='face back';
  const front=document.createElement('div');
  front.className='face front';
  front.style.backgroundPosition=cellPos(c.animal.cell);
  const label=document.createElement('div');
  label.className='label';
  label.textContent=c.animal.name;
  front.appendChild(label);
  el.appendChild(back);
  el.appendChild(front);
  if(c.revealed||c.matched) el.classList.add('revealed');
  if(c.matched) el.classList.add('matched');
  el.addEventListener('click',()=>onClick(i,el));
  boardEl.appendChild(el);
 });
}
function onClick(i,el){
 if(lock) return;
 const c=cards[i];
 if(c.matched||c.revealed) return;
 c.revealed=true;
 el.classList.add('revealed');
 flipped.push({i,el,c});
 if(flipped.length===2){
  moves++;
  movesEl.textContent='Moves: '+moves;
  lock=true;
  const [a,b]=flipped;
  if(a.c.animal.id===b.c.animal.id){
   a.c.matched=b.c.matched=true;
   matchedPairs++;
   pairsEl.textContent='Pairs left: '+(8-matchedPairs);
   factEl.textContent=a.c.animal.fact;
   setTimeout(()=>{flipped=[];lock=false;if(matchedPairs===8)win();},400);
  }else{
   setTimeout(()=>{
    a.c.revealed=b.c.revealed=false;
    a.el.classList.remove('revealed');
    b.el.classList.remove('revealed');
    flipped=[];lock=false;factEl.textContent='';
   },900);
  }
 }
}
function win(){
 winEl.classList.add('show');
}
function newGame(){
 winEl.classList.remove('show');
 factEl.textContent='';
 moves=0;matchedPairs=0;
 movesEl.textContent='Moves: 0';
 pairsEl.textContent='Pairs left: 8';
 cards=makeDeck();
 render();
}
function demoSetup(){
 cards=makeDeck();
 const first14=cards.slice(0,14);
 first14.forEach(c=>{c.matched=true;c.revealed=true;});
 const remaining=cards.slice(14);
 const a=animals[7];
 remaining[0].animal=a;remaining[1].animal=a;
 remaining[0].matched=false;remaining[1].matched=false;
 remaining[0].revealed=false;remaining[1].revealed=false;
 matchedPairs=7;
 moves=7;
 movesEl.textContent='Moves: 7';
 pairsEl.textContent='Pairs left: 1';
 render();
}
newBtn.addEventListener('click',newGame);
if(location.hash==='#demo'){demoSetup();}else{newGame();}

// art load detection without hardcoding path
const sprite=document.getElementById('sprite');
const bg=getComputedStyle(sprite).backgroundImage;
const url=bg&&bg!=='none'?bg.slice(5,-2).replace(/"/g,''):null;
if(url){
 const img=new Image();
 img.onload=()=>{};
 img.onerror=()=>{document.body.classList.add('no-art');};
 img.src=url;
}
</script>
</body>
</html>

The art

{
  "game": { "name": "TURN TWO CARDS" },
  "sheet": {
    "style": "Flat vector illustration, medium line weight, limited pastel palette with soft shadows, centered composition, consistent scale, black background.",
    "cells": [
      {
        "cell": 0,
        "id": "axolotl",
        "name": "Axolotl",
        "role": "animal",
        "prompt": "A cute axolotl with feathery external gills, smiling, centered on black background.",
        "fact": "It regrows lost limbs, and even parts of its brain, without scarring."
      },
      {
        "cell": 1,
        "id": "tardigrade",
        "name": "Tardigrade",
        "role": "animal",
        "prompt": "A microscopic tardigrade in a curled pose, detailed but simple, centered on black background.",
        "fact": "Can survive extreme radiation, vacuum, and temperatures from -272°C to 150°C."
      },
      {
        "cell": 2,
        "id": "mantis-shrimp",
        "name": "Mantis Shrimp",
        "role": "animal",
        "prompt": "A colorful mantis shrimp with raised claws, side view, centered on black background.",
        "fact": "Packs a punch with claws that strike faster than a .22 caliber bullet."
      },
      {
        "cell": 3,
        "id": "vampire-squid",
        "name": "Vampire Squid",
        "role": "animal",
        "prompt": "A vampire squid floating with bioluminescent filaments, centered on black background.",
        "fact": "Not a squid, and not a vampire; it glows to confuse predators in the deep."
      },
      {
        "cell": 4,
        "id": "pangolin",
        "name": "Pangolin",
        "role": "animal",
        "prompt": "A pangolin curled into a ball showing keratin scales, centered on black background.",
        "fact": "Covered in keratin scales and rolls into a ball when threatened."
      },
      {
        "cell": 5,
        "id": "okapi",
        "name": "Okapi",
        "role": "animal",
        "prompt": "An okapi standing in profile with striped hindquarters, centered on black background.",
        "fact": "Forest giraffe relative with zebra-striped hindquarters hidden in the jungle."
      },
      {
        "cell": 6,
        "id": "aye-aye",
        "name": "Aye-aye",
        "role": "animal",
        "prompt": "An aye-aye with large eyes and long middle finger reaching, centered on black background.",
        "fact": "Uses a bony finger to fish grubs from wood, the only primate to do so."
      },
      {
        "cell": 7,
        "id": "glass-frog",
        "name": "Glass Frog",
        "role": "animal",
        "prompt": "A glass frog perched on a leaf with translucent belly showing internal organs, centered on black background.",
        "fact": "Translucent belly lets you see its heart and liver beating inside."
      },
      {
        "cell": 8,
        "id": "back",
        "name": "Card back",
        "role": "back",
        "prompt": "Minimalist card back with interlocking paw prints forming a circle, flat design, black background, centered."
      }
    ]
  },
  "extras": [
    {
      "id": "table",
      "aspect": "16:9",
      "prompt": "A dark wooden tabletop with soft vignette, empty space for cards, no animals."
    }
  ]
}

The notes

Before the art arrives: Each face-up card shows the animal’s name in a centered label with a dark card background; face-down cards show a solid back placeholder, so the board remains fully playable.
On a win: A semi-transparent overlay appears with “You matched all pairs” and the final move count stays visible; the New game button resets the board.
Mismatch delay: Unmatched cards stay face up for 900 ms before flipping down, long enough to read but short enough to keep pace brisk.
Fact sources: High confidence; all eight facts are widely documented in peer-reviewed zoology and reputable natural history sources.

Attachments

meta/muse-glimmer-30b — page