Здравствуйте можете объяснить как этот код JS работает. ( Это был ответ задачи которой я не понял )

var room = "dining room";
var suspect = "Mr. Parkes";

var weapon = "";
var solved = false;

if (room === "gallery" && suspect === "Ms. Van Cleve") {
  weapon = "trophy";
  solved = true;
} else if (room === "ballroom" && suspect === "Mr. Kalehoff") {
  weapon = "poison";
  solved = true;
} else if (room === "billiards room" && suspect === "Mrs. Sparr") {
  weapon = "pool stick";
  solved = true;
} else if (room === "dining room" && suspect === "Mr. Parkes") {
  weapon = "knife";
  solved = true;
} else {
  solved = false;
}

if (solved) {
  console.log(suspect + " did it in the " + room + " with the " + weapon + "!" /* your message goes here*/ );
}