C50

Four Knights Game: Italian Variation 4. Nc3 Nf6

Chess diagram: Four Knights Game: Italian Variation after 4…Nf6

Type a move and press Enter: e4, Nf3, O-O, or from and to squares like g1f3 (e7e8q to promote). The board is also played with the mouse.

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Statistics from Lichess

8,698,356 games: White 47.6% / Draw 4.9% / Black 47.5%

The moves played next. Pick one to see it on the board.
Next moveGamesWhite / Draw / BlackW / D / B
Italian Game: Giuoco Pianissimo, Italian Four Knights Variation 4,513,1254.5M
2,435,2052.4M
593,396593K
406,131406K
343,906344K
93,11693K
57,73958K
52,90853K

Rated Lichess games between players rated 1600 to 2500, from the Lichess opening explorer, updated Oct 22, 2026

Engine evaluation

+0.13 The position is about equal

Best play: 5. d3 O-O 6. O-O h6 7. h3 a6 8. Nd5 d6 9. c3 Ba7

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 Black: Black scores 49% under 1400, 52% at 2200 and up and 49% in master games (wins plus half the draws).

PlayersGamesWhite / Draw / BlackW / D / B
Under 1400 12.3M
1400–1799 11.2M
1800–2199 3.6M
2200 and up 128K
Masters, over the board 482

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 26, 2026

Overview

Four Knights Game: Italian Variation (ECO C50, Open Games) is a variation of the Italian Game: Giuoco Piano, reached after 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Nc3 Nf6 (4 moves).

In 8,698,356 rated Lichess games between players rated 1600 to 2500, White won 47.6%, Black 47.5% and 4.9% were drawn. White's most played move here is 5. d3, in 52% of those games.

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How to answer 4…Nf6

The most played answer, 5. d3 (Italian Game: Giuoco Pianissimo, Italian Four Knights Variation), also scores best for White: 51.7%, with White winning 49.2% and Black 45.8% of 4.5M games. Of the main answers, 5. O-O scores lowest: 48.7%. Stockfish's first choice is also 5. d3.

Main answers: those played in at least 5% of these games. Score: White'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

This line peaked in 2021 at 0.41% of Lichess games and has slipped since: 0.29% in 2025.

Numbers by year
YearShare of gamesGames
20160.29%104,185
20170.28%155,932
20180.28%218,361
20190.29%363,361
20200.37%1,092,785
20210.41%1,607,741
20220.36%1,368,046
20230.34%1,263,315
20240.31%1,105,194
20250.29%999,919
2026 (Jan–Apr)0.28%302,871

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

Transpositions

Cite this page

Caissa Codex. “Four Knights Game: Italian Variation (C50)”. Lichess data as of 22 Oct 2026. https://chesscodex.org/openings/four-knights-game-italian-variation-2