Chess Openings Lab
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King's Indian Attack: Omega-Delta Gambit

The Omega-Delta Gambit is 1.Nf3 d5 2.g3 e5, where Black offers the e5 pawn for quick central space. White can simply take with 3.Nxe5 and keep an extra pawn, while Black hopes for fast development with ...Nd7 and ...Bd6.

Moves
1.Nf3 d5 2.g3 e5
ECO
A07
Engine
+1.32 · a clear edge for White (Stockfish 17.1, depth 20)
Played
206 games in our lichess sample
White scores
62.4%

Key ideas for both sides

White

  • Take with 3.Nxe5, the engine's clear choice, and retreat the knight to f3 if attacked.
  • Develop with Bg2 and b3, keeping the extra pawn and a solid position.
  • Watch for ...Ne5 and ...Bd6 trying to chase the knight; keep it protected.
  • Avoid quiet moves like d3 or Bg2 that let Black keep the pawn.

Black

  • After 3.Nxe5, ...Nd7 attacks the knight and gains a tempo for development.
  • Develop with ...Bd6 and ...Ngf6, aiming for quick castling and central pressure.
  • If White plays 3.Bg2, ...e4 gains space and pushes the knight around.
  • Use central space and piece activity to make up for the lost pawn.

Plans and pawn structure

If White takes on e5, Black is a pawn down and needs fast development. White keeps the extra pawn with Nf3, Bg2 and b3, then castles. Black's pieces come out with ...Nd7, ...Bd6 and ...Ngf6, aiming for central pressure and the e5 square. If White plays slowly with d3 or Bg2, Black's e5 pawn gains space and the game becomes balanced, or even pleasant for Black after ...e4.

What the engine plays from here

Stockfish 17.1 at depth 20 rates the position +1.32: a clear edge for White. Its three top choices for White:

  1. +1.32 3.Nxe5 Nd7 4.Nf3 Bd6 5.Bg2 Ngf6
  2. −0.27 3.d3 Bd6 4.Bg2 Nf6 5.O-O O-O
  3. −0.52 3.Bg2 e4 4.Nd4 c5 5.Nb5 a6

Pawns, from White's side.

How it scores on lichess

206 rated lichess games reached this position; White scored 62.4%.

under 120062.2%
1200–159954.9%
1600–199964.7%

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

How to play against it

As White, take on e5. Retreat the knight to f3 when attacked and develop with Bg2 and b3. Do not give the pawn back cheaply. White scores well here, and simple development keeps the extra pawn safe for a long time.

Questions

What are the moves of the King's Indian Attack: Omega-Delta Gambit?

The King's Indian Attack: Omega-Delta Gambit starts 1.Nf3 d5 2.g3 e5. Its ECO code is A07.

Is the King's Indian Attack: Omega-Delta Gambit good for Black?

Stockfish 17.1 rates the position +1.32 at depth 20, which is a clear edge for White. In 206 lichess games from our sample, White scored 62.4%. A dubious gambit for Black; White gets a clear edge by taking the pawn and developing calmly.

What is the main idea of the King's Indian Attack: Omega-Delta Gambit?

Black gives up the e5 pawn for development and central space. White simply takes and keeps the extra pawn with Bg2 and b3.

What should White play next?

The engine's first choice is Nxe5, with d3 and Bg2 close behind. 3.Nxe5 wins a pawn and leaves Black chasing for compensation.

Updated October 2026. Sources and method.