Touch-move rule the player touches his rook at the same time as touching the king, he must castle with that rook if it is legal to do so. If the player completes a two-square king move without touching a rook, the player must move the correct rook accordingly if castling on that side is legal. Otherwise, the move must be withdrawn and another king move made. When a pawn is moved to its eighth , once the player takes his hand off the pawn, a different move of the pawn can no longer be substituted. However, the move is not complete until
First-move advantage in chess position and have the superior position due to his better pawn structure!" However, GM Paul Keres responded in "CHESS" magazine, "We just don't believe it!" In symmetrical positions, as the Hodgson–Arkell and Portisch–Tal games discussed below illustrate, Black can continue to imitate White as long as he finds it feasible and desirable to do so, and deviate when that ceases to be the case. Further, a particular extra move is sometimes more of a liability than an asset. For example, Soltis notes that the position arising after 1.e4 e6 2.d4 d5 3.exd5 exd5 4.Nf3 Nf6 "is pretty equal". The same