srecord noeq G22ChallengePanel(G22Challenge challenge) is Swingable {
  transient int randomSeed = randomInt();
  transient JPanel imagesPanel = jline();
  
  visual withTitle(str(challenge),
    jvsplit(
      northAndCenterWithMargin(
        jRightAlignedLine(withLabel("Random seed:", jlabel(intToHex_upper(randomSeed)))),
        jCenteredRaisedSection("Images", jscrollHorizontal(imagesPanel))
      ),
      jCenteredSection("Analysis",
        jTodo()
      )
    ));
}