White to get massive advantage early on

Code

//Please feel welcome to copy this code for your own creations.
fromFen("k2r1bnr/pp1bpppp/1qnp4/1Bp5/4P3/2NP1N2/PPPB1PPP/R2Q1RK1 w Qk - 0 1");
info("It's White's turn, and it's time to deal a massive blow to Black.");

let steps = ["Nd5", "Qxb5", "Nc7+", "Kb8", "Nxb5"];

onPieceClicked(function(squareName) {
    unhighlightAll();
    
    if(squareName == sourceOfSan(steps[0])) {
        return true;
    } else {
        highlightSquareRed(squareName);
        return false;
    }
});

onMoveAttempted(function(san) {
    if(san == steps[0]) {
        steps.shift();
        
        if(steps.length > 0) {
          setTimeout(function() {
            performMove(steps[0]);
            steps.shift();
          }, 500);
        } else {
          complete();
          info(" ");
        }

        return true;
    } else {
        return false;
    }
});