Now we're going to try a complicated example. It illustrates two points. The first is that even if you aren't sure which squares are mined, restricting the possibilities is helpful. The second is that knowing which squares aren't mined is nearly as good as knowing which are mined.
Orain adibide korapilatsu bat ikusiko dugu. Bi puntu argitzen ditu. Lehenengoa: minak zein laukitan dauden ziur ez badakizu ere, aukerak murriztea lagungarria da. Bigarrena: minarik zein laukitan ez dagoen jakitea, zein laukitan dauden jakitea bezain ona da.