Chess for Beginners with GM Ronen Har-Zvi (Discovered Attack!) – 2013.11.24

Name: Chess for Beginners with GM Ronen Har-Zvi (Discovered Attack!) – 2013.11.24
Uploaded: 2013-12-11T21:51:33+00:00
Description: Chess Grandmaster Ronen Har-Zvi presents a lecture for beginners at the Chess Club and Scholastic Center of Saint Louis. The lecture covers discovered attacks in all their forms.

December 11, 2013 ChessTerra Chess Lectures

♛

Ready to play?

Start learning chess for free on Chess.com

Play on Chess.com →

Chess Grandmaster Ronen Har-Zvi presents a lecture for beginners at the Chess Club and Scholastic Center of Saint Louis. The lecture covers discovered attacks in all their forms.

Daily Puzzle

Loading the puzzle…

More daily puzzles →

♟ More videos — same channel

Breaking It Down 🤔 with IM Sukandar ♟️

Oct 14, 2026

WCHOF: Ulf Andersson, Kosteniuk, Ivanchuk to be Inducted | R5…

Oct 14, 2026

Ask an Arbiter: How Do I Claim Threefold Repetition? |…

Oct 14, 2026

What’s Harder? Winning a Game or Forgetting a Loss? #USChessChamps

Oct 14, 2026

Leave a Reply Cancel reply

You must be logged in to post a comment.

<div id="puzzlebot-container"></div>

<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@chrisoakman/chessboardjs@1.0.0/dist/chessboard-1.0.0.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@chrisoakman/chessboardjs@1.0.0/dist/chessboard-1.0.0.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@chrisoakman/chessboardjs@1.0.0/dist/chessboard-1.0.0.polyfills.min.js"></script>

<script>
  var board = null;
  var game = new Chess();

  function onDragStart(source, piece, position, orientation) {
    // do not allow dragging when game is over
    if (game.game_over()) return false;

    // only allow white pieces to be dragged
    if (piece.search(/^b/) !== -1) return false;
  }

  function onDrop(source, target) {
    // see if the move is legal
    var move = game.move({
      from: source,
      to: target,
      promotion: "q" // always promote to a queen for example simplicity
    });

    // illegal move
    if (move === null) return "snapback";

    // update the board position
    board.position(game.fen());

    // get a random move from the engine
    window.setTimeout(makeRandomMove, 250);
  }

  // make a random move
  function makeRandomMove() {
    var possibleMoves = game.moves();

    // game over
    if (possibleMoves.length === 0) return;

    var randomIndex = Math.floor(Math.random() * possibleMoves.length);
    game.move(possibleMoves[randomIndex]);
    board.position(game.fen());
  }

  // initialize the chessboard
  function init() {
    var config = {
      draggable: true,
      onDragStart: onDragStart,
      onDrop: onDrop,
      position: 'start'
    };

    board = Chessboard('puzzlebot-container', config);

    makeRandomMove();
  }

  $(document).ready(init);
</script>

<script src="https://revolvermaps2.com/embed.js" data-site="z79wnx94gq4m" data-size="300" data-theme="custom" data-color="ffffff" data-land="d4a843" data-ocean="0f1a2e" async></script>