E20

Nimzo-Indian Defense: Kmoch Variation

Chess diagram: Nimzo-Indian Defense: Kmoch Variation after 4. f3

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Statistics from Lichess

610,282 games: White 51.4% / Draw 5.1% / Black 43.5%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
244,041244K
167,599168K
92,14992K
53,63154K
25,67726K
7,6557,655
7,1377,137
5,2705,270

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Oct 31, 2026

Engine evaluation

+0.06 The position is about equal

Best play: 4... c5 5. d5 d6 6. e4 O-O 7. Ne2 b5 8. Nf4 exd5 9. Nxd5

Stockfish 19, depth 30, after the line's last move. Scores are in pawns, from White's side.

By rating

The stronger the players, the better this line does for White: White scores 51% under 1400, 54% at 2200 and up and 53% in master games (wins plus half the draws).

PlayersGamesWhite / Draw / BlackW / D / B
Under 1400 6,890
1400–1799 65K
1800–2199 331K
2200 and up 230K
Masters, over the board 8,050

Master games

Rated blitz, rapid and classical Lichess games by rating band, and over-the-board games of players rated 2200+ from the Lichess masters database, updated Sep 27, 2026

Overview

Nimzo-Indian Defense: Kmoch Variation (ECO E20, Indian Defenses) is a variation of the Nimzo-Indian Defense, reached after 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 (4 moves).

In 610,282 rated Lichess games between players rated 1600 to 2500, White won 51.4%, Black 43.5% and 5.1% were drawn. Black's most played move here is 4…d5, in 40% of those games.

It branches into 2 named variations; the most played are Nimzo-Indian Defense: Sämisch Variation and Nimzo-Indian Defense: Sämisch Variation, Botvinnik Variation. In all, 4 named lines continue from it.

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How to play against the Nimzo-Indian Defense: Kmoch Variation

4…c5 scores best for Black: 47.6%, with Black winning 44.9% and White 49.7% of 168K games. The most played, 4…d5, scores 46.3% in 244K games, and 4…Bxc3+ scores lowest: 42.2%. Stockfish's first choice is also 4…c5.

Main answers: those played in at least 5% of these games. Score: Black's wins plus half the draws, in rated Lichess games between players rated 1600 to 2500. How to play against other popular openings

Popularity by year

The Nimzo-Indian Defense: Kmoch Variation peaked in 2020 at 0.028% of Lichess games and has slipped since: 0.023% in 2025.

Numbers by year
YearShare of gamesGames
20160.026%9,372
20170.024%13,073
20180.027%21,100
20190.025%31,382
20200.028%80,643
20210.023%88,719
20220.023%85,784
20230.023%85,405
20240.022%78,780
20250.023%78,739
2026 (Jan–Apr)0.024%26,464

Share of rated Lichess games between players rated 1600 to 2500 (blitz, rapid and classical) that reach this position, by year; 2026: January to April. Which openings are rising and falling

Variations (2)

All 4 named lines that continue from here

Cite this page

Caissa Codex. “Nimzo-Indian Defense: Kmoch Variation (E20)”. Lichess data as of 31 Oct 2026. https://chesscodex.org/openings/nimzo-indian-defense-kmoch-variation