Run Detail

completedqwen3.8-flash

Unscored

Every model's answer from this round

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Provider

openrouter

Challenge Version

v1.0

Turns

Duration

801.6s

Total Tokens

105,071

Input Tokens

1,658

Output Tokens

103,413

Reasoning Tokens

97,517

Reasoning Effort

medium

Est. Cost

$0.0489

Started

8/26/2026, 10:14:23 PM

OR Provider

Alibaba

Finish Reason

stop

Generation ID

gen-1787782463-Quy23ujphlamoy1zsrlK

Turns (1)

Turn #1

1,658 in103,413 out97,517 reasoning105,071 total801.5s

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 neon-on-black memory game with eight strange animals.

The game

<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover">
<title>Turn Two Cards</title>
<style>
*, *::before, *::after { box-sizing: border-box; }
html, body {
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #000;
  color: #f4f4f6;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  user-select: none;
}
body { height: 100dvh; }
main {
  height: 100%;
  min-width: 0;
  min-height: 0;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto auto;
  gap: clamp(2px, 1.4vmin, 12px);
  padding: clamp(4px, 2vmin, 18px);
}
header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: clamp(4px, 1.5vmin, 18px);
  min-width: 0;
}
h1 {
  margin: 0;
  min-width: 0;
  font-size: clamp(12px, 3.1vmin, 26px);
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  line-height: 1.1;
}
.stats {
  min-width: 0;
  font-size: clamp(9px, 2.2vmin, 15px);
  letter-spacing: 0.04em;
  opacity: 0.92;
}
.board-wrap {
  min-height: 0;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.board {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(4, 1fr);
  gap: clamp(1px, 1vmin, 10px);
  padding: clamp(1px, 1vmin, 10px);
  background: #060608;
  border-radius: clamp(6px, 2vmin, 18px);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.08), 0 12px 34px rgba(0,0,0,0.85);
  perspective: 900px;
}
.card {
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.32s ease;
  cursor: pointer;
  border-radius: clamp(2px, 1.2vmin, 10px);
  touch-action: manipulation;
}
.card:focus-visible {
  outline: 2px solid #6ff0ff;
  outline-offset: 2px;
}
.card.matched { cursor: default; }
.card.matched .face {
  box-shadow: inset 0 0 0 1px rgba(102,255,238,0.35), 0 0 16px rgba(102,255,238,0.12);
}
.face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: inherit;
  overflow: hidden;
  background: #000;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.12);
}
.front { transform: rotateY(180deg); }
.card.up { transform: rotateY(180deg); }
.face-art {
  position: absolute;
  inset: 0;
  display: none;
  background-repeat: no-repeat;
  background-size: 300% 300%;
}
html[data-art="loaded"] .face-art {
  display: block;
  background-image: var(--art-url);
}
html[data-art="loaded"] .fallback,
html[data-art="loaded"] .back-fallback { display: none; }
.fallback {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6%;
  padding: 6%;
  background-color: #050506;
  background-image: radial-gradient(circle at 50% 42%, rgba(255,255,255,0.09), transparent 58%);
}
.shape {
  width: 44%;
  height: 44%;
  background: var(--hue);
  clip-path: var(--shape);
  filter: drop-shadow(0 0 10px var(--hue));
  flex: 0 0 auto;
}
.name {
  font-size: clamp(6px, 1.9vmin, 13px);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-align: center;
  line-height: 1.05;
}
.back-fallback {
  position: absolute;
  inset: 0;
  background-color: #000;
  background-image:
    radial-gradient(circle, rgba(255,255,255,0.10), transparent 62%),
    repeating-linear-gradient(45deg, #101014 0%, #101014 6%, #000 6%, #000 12%);
}
.fact {
  min-height: clamp(24px, 6.2vmin, 54px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  white-space: pre-line;
  padding: clamp(3px, 1.4vmin, 10px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 12px;
  background: rgba(255,255,255,0.04);
  font-size: clamp(8px, 2.25vmin, 15px);
  line-height: 1.25;
  overflow: hidden;
}
.fact.win {
  border-color: rgba(102,255,238,0.55);
  background: rgba(0,255,220,0.08);
  color: #fff;
  font-weight: 700;
}
button {
  align-self: center;
  border: 1px solid rgba(255,255,255,0.18);
  background: rgba(255,255,255,0.06);
  color: inherit;
  font-family: inherit;
  font-size: clamp(9px, 2.2vmin, 15px);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: clamp(5px, 1.6vmin, 11px) clamp(10px, 3vmin, 22px);
  border-radius: 999px;
  cursor: pointer;
  touch-action: manipulation;
}
button:hover { background: rgba(255,255,255,0.11); }
button:focus-visible { outline: 2px solid #6ff0ff; outline-offset: 2px; }
@media (max-height: 420px) {
  .fact { min-height: 20px; font-size: 8px; }
  h1 { font-size: 12px; }
  .stats { font-size: 8px; }
  button { font-size: 8px; padding: 4px 10px; }
}
@media (max-width: 420px) {
  h1 { font-size: 12px; }
  .stats { font-size: 8px; }
  .fact { font-size: 8px; }
  button { font-size: 8px; padding: 4px 10px; }
}
@media (prefers-reduced-motion: reduce) {
  .card { transition: none; }
}
</style>
</head>
<body>
<main>
  <header>
    <h1>Turn Two Cards</h1>
    <div class="stats" aria-live="polite">Moves <span id="moves">0</span> | Pairs left <span id="pairs">8</span></div>
  </header>
  <div class="board-wrap">
    <div id="board" class="board" role="group" aria-label="Memory board"></div>
  </div>
  <div id="fact" class="fact" aria-live="polite">Turn two cards to find the animals.</div>
  <button id="newGame" type="button">New game</button>
</main>
<script>
const animals = [
  { id:'axolotl', name:'Axolotl', hue:'#ff6b9a', shape:'circle(50%)', fact:'They regrow limbs, spinal cord, heart, and even parts of their brain without scarring.' },
  { id:'mantisshrimp', name:'Mantis Shrimp', hue:'#4dff88', shape:'polygon(50% 0%, 100% 38%, 82% 100%, 18% 100%, 0% 38%)', fact:'Its strike creates cavitation bubbles that flash with light.' },
  { id:'tardigrade', name:'Tardigrade', hue:'#ffd24d', shape:'polygon(20% 0%, 80% 0%, 100% 20%, 100% 80%, 80% 100%, 20% 100%, 0% 80%, 0% 20%)', fact:'They can survive vacuum, radiation, and years without water in a dried state.' },
  { id:'jellyfish', name:'Immortal Jellyfish', hue:'#4dd2ff', shape:'polygon(50% 0%, 90% 25%, 90% 75%, 50% 100%, 10% 75%, 10% 25%)', fact:'It can revert to a young polyp stage, making its life cycle potentially endless.' },
  { id:'mimicoctopus', name:'Mimic Octopus', hue:'#c54dff', shape:'polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%)', fact:'It imitates lionfish, flatfish, and sea snakes to escape predators.' },
  { id:'starnosedmole', name:'Star-Nosed Mole', hue:'#ff8a4d', shape:'polygon(50% 0%, 60% 40%, 100% 50%, 60% 60%, 50% 100%, 40% 60%, 0% 50%, 40% 40%)', fact:'It sniffs underwater by blowing bubbles and re-inhaling them.' },
  { id:'nakedmolerat', name:'Naked Mole-Rat', hue:'#ff4d4d', shape:'polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%)', fact:'They resist cancer and can survive without oxygen for many minutes.' },
  { id:'platypus', name:'Platypus', hue:'#4dffd2', shape:'polygon(25% 0%, 75% 0%, 100% 50%, 75% 100%, 25% 100%, 0% 50%)', fact:'It hunts with electroreception and its fur glows under ultraviolet light.' }
];
const ART_PATH = 'art/cards.png';
const board = document.getElementById('board');
const fact = document.getElementById('fact');
const movesEl = document.getElementById('moves');
const pairsEl = document.getElementById('pairs');
const wrap = document.querySelector('.board-wrap');
let deck = [];
let cards = [];
let faceUp = [];
let matched = [];
let lock = false;
let won = false;
let moves = 0;
let pairsLeft = 8;
let mismatchTimer = 0;

function isDemo() {
  return location.hash.trim().toLowerCase() === '#demo';
}

function cellPosition(index) {
  const x = (index % 3) * 50;
  const y = Math.floor(index / 3) * 50;
  return x + '% ' + y + '%';
}

function shuffle(items) {
  for (let i = items.length - 1; i > 0; i--) {
    const j = Math.floor(Math.random() * (i + 1));
    const t = items[i];
    items[i] = items[j];
    items[j] = t;
  }
  return items;
}

function setFact(text, isWin) {
  fact.textContent = text;
  fact.classList.toggle('win', !!isWin);
  window.setTimeout(fit, 0);
}

function updateStats() {
  movesEl.textContent = String(moves);
  pairsEl.textContent = String(pairsLeft);
}

function render() {
  board.innerHTML = '';
  cards = [];
  for (let pos = 0; pos < 16; pos++) {
    const animalIndex = deck[pos];
    const animal = animals[animalIndex];
    const card = document.createElement('div');
    card.className = 'card';
    card.dataset.pos = String(pos);
    card.setAttribute('role', 'button');
    card.setAttribute('tabindex', '0');
    card.setAttribute('aria-label', matched[animalIndex] ? animal.name + ' matched' : 'Face down card');

    const front = document.createElement('div');
    front.className = 'face front';
    front.setAttribute('aria-hidden', 'true');
    const art = document.createElement('div');
    art.className = 'face-art';
    art.style.backgroundPosition = cellPosition(animalIndex);
    const fallback = document.createElement('div');
    fallback.className = 'fallback';
    fallback.style.setProperty('--hue', animal.hue);
    fallback.style.setProperty('--shape', animal.shape);
    const shape = document.createElement('div');
    shape.className = 'shape';
    const name = document.createElement('div');
    name.className = 'name';
    name.textContent = animal.name;
    fallback.appendChild(shape);
    fallback.appendChild(name);
    front.appendChild(art);
    front.appendChild(fallback);

    const back = document.createElement('div');
    back.className = 'face back';
    back.setAttribute('aria-hidden', 'true');
    const backArt = document.createElement('div');
    backArt.className = 'face-art';
    backArt.style.backgroundPosition = cellPosition(8);
    const backFallback = document.createElement('div');
    backFallback.className = 'back-fallback';
    back.appendChild(backArt);
    back.appendChild(backFallback);

    card.appendChild(back);
    card.appendChild(front);
    if (matched[animalIndex]) {
      card.classList.add('up');
      card.classList.add('matched');
    }
    board.appendChild(card);
    cards.push(card);
  }
  fit();
}

function newGame(demo) {
  if (mismatchTimer) {
    window.clearTimeout(mismatchTimer);
    mismatchTimer = 0;
  }
  deck = [];
  for (let i = 0; i < animals.length; i++) {
    deck.push(i, i);
  }
  shuffle(deck);
  matched = new Array(animals.length).fill(false);
  faceUp = [];
  lock = false;
  won = false;
  moves = 0;
  pairsLeft = animals.length;
  if (demo) {
    moves = animals.length - 1;
    const remaining = Math.floor(Math.random() * animals.length);
    for (let i = 0; i < animals.length; i++) {
      if (i !== remaining) {
        matched[i] = true;
        pairsLeft--;
      }
    }
  }
  render();
  updateStats();
  setFact(demo ? 'Seven pairs are matched. One pair remains.' : 'Turn two cards to find the animals.', false);
}

function flipCard(card) {
  if (lock || won) return;
  const pos = Number(card.dataset.pos);
  if (faceUp.includes(pos)) return;
  const animalIndex = deck[pos];
  if (matched[animalIndex]) return;
  card.classList.add('up');
  faceUp.push(pos);
  card.setAttribute('aria-label', animals[animalIndex].name);
  if (faceUp.length < 2) return;
  moves++;
  updateStats();
  const a = faceUp[0];
  const b = faceUp[1];
  const ai = deck[a];
  const bi = deck[b];
  if (ai === bi) {
    matched[ai] = true;
    pairsLeft--;
    cards[a].classList.add('matched');
    cards[b].classList.add('matched');
    const animal = animals[ai];
    cards[a].setAttribute('aria-label', animal.name + ' matched');
    cards[b].setAttribute('aria-label', animal.name + ' matched');
    faceUp = [];
    updateStats();
    if (pairsLeft === 0) {
      won = true;
      setFact(animal.name + ': ' + animal.fact + '\nYou win! All eight pairs matched in ' + moves + ' moves.', true);
    } else {
      setFact(animal.name + ': ' + animal.fact, false);
    }
  } else {
    lock = true;
    mismatchTimer = window.setTimeout(function() {
      cards[a].classList.remove('up');
      cards[b].classList.remove('up');
      cards[a].setAttribute('aria-label', 'Face down card');
      cards[b].setAttribute('aria-label', 'Face down card');
      faceUp = [];
      lock = false;
      mismatchTimer = 0;
    }, 850);
  }
}

board.addEventListener('click', function(event) {
  const card = event.target.closest('.card');
  if (card) flipCard(card);
});
board.addEventListener('keydown', function(event) {
  if (event.key !== 'Enter' && event.key !== ' ') return;
  const card = event.target.closest('.card');
  if (!card) return;
  event.preventDefault();
  flipCard(card);
});
document.getElementById('newGame').addEventListener('click', function() {
  newGame(false);
});
window.addEventListener('hashchange', function() {
  newGame(isDemo());
});

function fit() {
  const rect = wrap.getBoundingClientRect();
  const raw = Math.min(rect.width, rect.height);
  const size = Math.max(0, Math.floor(raw || 0));
  board.style.width = size + 'px';
  board.style.height = size + 'px';
}
if (window.ResizeObserver) {
  new ResizeObserver(fit).observe(wrap);
}
window.addEventListener('resize', fit);
window.addEventListener('load', fit);

const artImage = new Image();
artImage.onload = function() {
  document.documentElement.style.setProperty('--art-url', 'url(' + ART_PATH + ')');
  document.documentElement.dataset.art = 'loaded';
};
artImage.onerror = function() {
  document.documentElement.dataset.art = 'missing';
};
artImage.src = ART_PATH;

newGame(isDemo());
</script>
</body>
</html>

The art

{
  "game": { "name": "TURN TWO CARDS" },
  "sheet": {
    "style": "Flat-color vector illustration, bold clean outlines, limited neon palette on pure black, high contrast, subtle inner glow, one subject centered, no text, no background scenery, identical scale.",
    "cells": [
      {
        "cell": 0,
        "id": "axolotl",
        "name": "Axolotl",
        "role": "animal",
        "prompt": "A pink axolotl in side view, feathery external gills fanned out, wide mouth, curled tail.",
        "fact": "They regrow limbs, spinal cord, heart, and even parts of their brain without scarring."
      },
      {
        "cell": 1,
        "id": "mantisshrimp",
        "name": "Mantis Shrimp",
        "role": "animal",
        "prompt": "A bright green and red mantis shrimp facing forward, raptorial appendices raised, segmented body.",
        "fact": "Its strike creates cavitation bubbles that flash with light."
      },
      {
        "cell": 2,
        "id": "tardigrade",
        "name": "Tardigrade",
        "role": "animal",
        "prompt": "A plump eight-legged tardigrade in three-quarter view, stubby claws, translucent body.",
        "fact": "They can survive vacuum, radiation, and years without water in a dried state."
      },
      {
        "cell": 3,
        "id": "jellyfish",
        "name": "Immortal Jellyfish",
        "role": "animal",
        "prompt": "A small bell-shaped immortal jellyfish viewed from the side, delicate tentacles, four gonads visible.",
        "fact": "It can revert to a young polyp stage, making its life cycle potentially endless."
      },
      {
        "cell": 4,
        "id": "mimicoctopus",
        "name": "Mimic Octopus",
        "role": "animal",
        "prompt": "A mimic octopus with long striped arms, changing posture.",
        "fact": "It imitates lionfish, flatfish, and sea snakes to escape predators."
      },
      {
        "cell": 5,
        "id": "starnosedmole",
        "name": "Star-Nosed Mole",
        "role": "animal",
        "prompt": "A star-nosed mole with pink tentacled nose and sleek dark fur.",
        "fact": "It sniffs underwater by blowing bubbles and re-inhaling them."
      },
      {
        "cell": 6,
        "id": "nakedmolerat",
        "name": "Naked Mole-Rat",
        "role": "animal",
        "prompt": "A wrinkled pink naked mole-rat with protruding teeth.",
        "fact": "They resist cancer and can survive without oxygen for many minutes."
      },
      {
        "cell": 7,
        "id": "platypus",
        "name": "Platypus",
        "role": "animal",
        "prompt": "A platypus with broad flat bill, webbed feet, streamlined body.",
        "fact": "It hunts with electroreception and its fur glows under ultraviolet light."
      },
      {
        "cell": 8,
        "id": "back",
        "name": "Card back",
        "role": "back",
        "prompt": "A symmetrical ornamental emblem: a stylized eye inside nested hexagons, subtle circuit-like lines."
      }
    ]
  },
  "extras": []
}

The notes

Before the art arrives: face-up cards show the animal name and a colored geometric emblem; face-down cards show a striped placeholder.
On a win: the last fact and a clear win message appear in the fact panel, the panel highlights, and further card clicks are ignored.
Mismatch delay: 850 ms. Long enough to compare the two faces, short enough to keep play moving.
Fact sources: high confidence; all eight facts are standard, widely documented traits and each is under 120 characters.

Attachments

qwen/qwen3.8-flash — page