 Rowson cites as an example of the last phenomenon the well @-@ regarded Zaitsev Variation of the Ruy Lopez . After 1.e4 e5 2.Nf3 Nc6 <unk> a6 <unk> Nf6 5 @.@ 0 @-@ 0 Be7 <unk> b5 <unk> 0 @-@ 0 <unk> d6 <unk> Bb7 <unk> Re8 ( initiating the Zaitsev Variation ) , White can repeat moves once with <unk> Rf8 <unk> This puts Black in an awkward situation , since he must either ( a ) insist on the Zaitsev with 12 ... Re8 , which allows White to choose whether to draw by threefold repetition with <unk> Rf8 <unk> , or play on with a different move , or ( b ) play a different ( and possibly inferior ) variation by playing something other than 12 ... Re8 . 
