Chess Openings Lab
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Center Game: Hall Variation

The Hall Variation is 4.Qc4, where White's queen leaves d4 for c4 after ...Nc6. The queen eyes f7 and stays off the e-file, but it can be harassed by ...d5, ...Ne5 or ...Nb4, so Black aims to develop with tempo against it.

Moves
1.e4 e5 2.d4 exd4 3.Qxd4 Nc6 4.Qc4
ECO
C22
Engine
−0.34 · a slight edge for Black (Stockfish 17.1, depth 20)
Played
676 games in our lichess sample
White scores
49.1%

Key ideas for both sides

White

  • Develop with Nc3 and Bd2 or Nf3, and keep the queen protected before Black's knights arrive.
  • Against ...Nf6 and ...Bb4, a3 forces a decision; Qxc3 recaptures with the queen on a long diagonal.
  • After ...d5, take with exd5 and meet ...Nb4 with a3, as the engine line does.
  • Pressure on f7 from c4 is real if Black forgets to develop the kingside.

Black

  • 4...Nf6 develops and hits e4. Follow with ...Bb4 and short castling before White's queen finds a safe home.
  • ...d5 opens lines immediately. If exd5, ...Nb4 eyes c2 and prepares ...Nxd5 to win the pawn back.
  • ...Ne5 or ...Be6 style moves can gain tempo on the c4 queen once lines open.
  • The check on b4 trades dark bishops and leaves White's queen alone in the center.

Plans and pawn structure

The queen on c4 is both active and a target. Black develops quickly with ...Nf6, ...Bb4 and ...O-O, then uses ...d5 or ...Re8 to open the center while White's king is still on e1. White wants Nc3, Bd2, and short or long castling, then f3 to keep e4. If White gets castled with the queen safe, the position is roughly level. If Black opens the center first, the queen on c4 becomes a source of lost tempi.

What the engine plays from here

Stockfish 17.1 at depth 20 rates the position −0.34: a slight edge for Black. Its three top choices for Black:

  1. −0.34 4...Nf6 5.Nc3 Bb4 6.a3 Bxc3+ 7.Qxc3
  2. −0.04 4...Bb4+ 5.Bd2 Bxd2+ 6.Nxd2 Qf6 7.Qb3
  3. +0.11 4...d5 5.exd5 Nb4 6.a3 Nxd5 7.Nc3

Pawns, from White's side.

How it scores on lichess

676 rated lichess games reached this position; White scored 49.1%.

under 120047.2%
1200–159949.8%
1600–199952.9%

Light: White wins. Grey: draws. Dark: Black wins. About the sample.

How to play against it

As Black, develop with tempo: 4...Nf6 is the cleanest, followed by ...Bb4 and ...O-O. The ...d5 break is good but needs follow-up with ...Nb4. Do not leave f7 hanging to the queen and a bishop on c4, and castle before you open more lines.

Questions

What are the moves of the Center Game: Hall Variation?

The Center Game: Hall Variation starts 1.e4 e5 2.d4 exd4 3.Qxd4 Nc6 4.Qc4. Its ECO code is C22.

Is the Center Game: Hall Variation good for White?

Stockfish 17.1 rates the position −0.34 at depth 20, which is a slight edge for Black. In 676 lichess games from our sample, White scored 49.1%. An offbeat queen route that is playable but gives Black easy development; Black just needs to know how to gain time on the queen.

What is the main idea of the Center Game: Hall Variation?

White's queen avoids the e-file by going to c4, where it watches f7. Black answers by developing with tempo, using ...Nf6, ...Bb4 and ...d5 to keep pushing the queen around.

What should Black play next?

The engine's first choice is Nf6, with Bb4+ and d5 close behind. 4...Nf6 develops and attacks e4, preparing ...Bb4 to pin the knight that would defend it.

Updated October 2026. Sources and method.