The Open Ruy Lopez (also known as the Open Spanish) has always been a popular choice both at club level and at grandmaster level, where it has withstood the test of time after decades of close scrutiny. It offers both sides the opportunity for a sharp clash of forces in which the better prepared player will often come out on top. It is therefore no surprise that such fighting players as Victor Korchnoi and Jan Timman have always used the Open Ruy Lopez as an important weapon in their armoury.