The Three Knights Variation arises in the Nimzo-Indian after 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 (ECO E21). White develops the knight to its natural square while keeping the choice of plan open.
From this position the game often transposes into neighbouring systems (with e3, Qc2, or even into a Queen's Indian formation), depending on Black's reply - ...c5, ...b6 or ...O-O. White leaves the structure undecided for later.
A quiet, universal approach against the Nimzo-Indian, convenient for anyone who plays on understanding and likes flexible move orders.
Drag a piece onto the board, or click a piece and then click the squares. The cross beside the pieces sweeps every piece of that colour off the board, and a single piece can be dragged off the edge.
The pieces will be arranged into the chosen pattern.
It is the mating side to move. Find mate in one.
Openings, endgame positions and breakthrough studies - the set-up appears on the board.
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