<div>
    <h4>初心者問題</h4>
    <div class="info-video-container">
        <iframe 
            src="https://youtube.com/embed/6HRoFvx_S2Y" 
            frameborder="0" 
            allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" 
            allowfullscreen>
        </iframe>
    </div>
    <h4>級位者問題</h4>
    <div class="info-video-container">
        <iframe 
            src="https://youtube.com/embed/ErKeRIh6V8E" 
            frameborder="0" 
            allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" 
            allowfullscreen>
        </iframe>
    </div>
    <h4>低段者問題</h4>
    <div class="info-video-container">
        <iframe 
            src="https://youtube.com/embed/qUKyWPWXBtI" 
            frameborder="0" 
            allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" 
            allowfullscreen>
        </iframe>
    </div>
    <h4>高段者問題</h4>
    <div class="info-video-container">
        <iframe 
            src="https://youtube.com/embed/KiIq0Ls3Qh8" 
            frameborder="0" 
            allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" 
            allowfullscreen>
        </iframe>
    </div>
    <p>囲碁学習 練習問題</p>
</div>

練習問題[20260525]、入門〜高段問題