Sicilian Defense: Kan Variation, Modern Variation

B421.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3
Dec 13, 2027
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TL;DR

An aggressive Kan answer where the bishop hits the b1-h7 diagonal and lines up Qe2 plus a quick kingside push. White trades a slightly worse bishop placement for faster piece play, betting on attack over the slower 5.Nc3 setups.

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IM John BartholomewCo-Founder & Chess Educator

International Master and chess educator. Co-founded Chessable and joined Chessiverse as co-founder. Best known for his "Climbing the Rating Ladder" YouTube series and structured opening courses.

Sicilian Defense: Kan Variation, Modern Variation: A Complete Guide
Sicilian Defense: Kan Variation, Modern Variation - Opening Moves
Summary

The Sicilian Defense: Kan Variation, Modern Variation begins with 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 (ECO B42). Lichess records 868,870 games in this line, which gives us a reliable view of how it actually performs in practice.

History and Notable Players

It arises from the Sicilian Defense: Kan Variation. On the White side, Mladen Palac (48 games), Oleg Korneev (42 games), Thomas Luther (40 games) top the database. Notable Black exponents: Normunds Miezis (121 games), Florin Gheorghiu (91 games), Petar Velikov (75 games).

Performance Across Rating Levels

How well the Sicilian Defense: Kan Variation, Modern Variation works depends on what level you're playing at. Among 1200-rated players, it appears in 0.00% of games — 10,437 of them on record — with White winning 45.9% and Black 51.1%. Move up to 1800 Elo and the share shifts to 0.02%, with White winning 45.8% versus Black's 50%. At 2500, 0.20% of games go into this opening; draws sit at 7.7% — the line is well-mapped at this level.

Time Control Patterns

The Sicilian Defense: Kan Variation, Modern Variation skews toward blitz chess. In bullet, it appears in 0.01% of games (330,617); White wins 45.9%. Blitz shows 0.02% adoption across 756,158 games, White scoring 47.1%. In rapid, the share rises to 0.01% — 112,712 games, White 47.1%.

Move Diversity and Theory Depth

What players actually play after the opening moves depends heavily on rating. At 1200 Elo, the top reply is Qc7, played 28.5% of the time. There are 6 other moves seeing meaningful share, and 62.6% of games stick to established theory. Entropy: 2.98. By 2500, Qc7 dominates at 29% of replies; only 5 viable alternatives remain and 74.9% of moves are theory. Entropy drops to 2.63.

Year-over-year data tells you whether this opening is a contemporary fixture or a fading one. Adoption peaked in 2015 at 0.03% (6,054 games). By 2025 it sits at 0.02% — a 8% shift overall, leaving the line flat.

Common Mistakes

  • Drifting away from main theory — At 400 Elo, theory adherence sits at 59.1% — versus 72.7% at 2000. The most popular deviation is Bc5 (played 15.9% of the time at 400, much less so up top). It looks fine but quietly hands the better-prepared side an edge.
  • Neglecting development — Extra pawn moves in the opening are tempting, especially when you "know the moves". Developing a piece each turn is the simple correction.
  • Ignoring the kingside attack — In sharp Sicilian lines, White typically castles long and pushes the h-pawn. Without your own counterplay on the queenside or in the centre, White's attack lands first.

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Quick Facts

Main Line1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3
FENrnbqkbnr/1p1p1ppp/p3p3/8/3NP3/3B4/PPP2PPP/RNBQK2R b KQkq - 1 5
DifficultyExpert
Style

Theoretician openings have deep, well-studied lines where knowledge of specific variations gives a significant advantage. Preparation and memorization of key lines are essential.

868,870games on Lichess
47.1%
4.9%
48%
White wins Draws Black wins

Top Players

As White
As Black

Data from Lichess opening explorer (blitz & rapid)

Most Popular At2500
SharpnessSharp

Popularity by Rating

Percentage of all games at each rating bracket that feature this opening.

Data from Lichess opening explorer (blitz & rapid games)

Theory Adherence by Rating

How often players choose the single most popular move at this position. Higher = more predictable play.

Black to move after the opening line

Popularity Over Time

Share of all Lichess blitz + rapid games featuring this opening, by year.

Top Moves by Rating

Black to move after the opening line

RatingMost Popular2nd3rd
4005...Qc730.2%5...Bc515.9%5...b512.9%
10005...Qc729.6%5...Nc614.9%5...b514.4%
12005...Qc728.5%5...b519.7%5...Nc614.4%
14005...Qc731%5...b520.5%5...Nc614.9%
16005...Qc736.2%5...b520.2%5...Nc614.3%
18005...Qc741%5...b517.8%5...Nc613.7%
20005...Qc745.4%5...Nf614.4%5...Nc612.9%
22005...Qc742.1%5...Nf616.7%5...Bc514.4%
25005...Qc729%5...Bc528.7%5...Nf617.2%

Popularity by Time Control

Bullet
0.01%331K
Blitz
0.02%756K
Rapid
0.01%113K
2% more decisive in bullet
Raw data tables (Lichess blitz + rapid)
Sicilian Defense: Kan Variation, Modern Variation: popularity and win rates by player rating
Rating (Elo)Share %GamesWhite win %Black win %Draw %Sharpness
4000.0024244.253.72.10.979
10000.001,86147.949.52.60.974
12000.0010,43745.951.13.00.970
14000.0039,71146.350.53.20.968
16000.01114,65245.750.53.80.962
18000.02208,54045.850.04.20.958
20000.05240,58747.347.84.90.951
22000.13225,59548.745.16.20.938
25000.2027,24548.943.37.70.923
Sicilian Defense: Kan Variation, Modern Variation: move-choice theory adherence by rating
Rating (Elo)Top moveTop move %Viable movesTheory %Entropy
4005...Qc730.2659.12.896
10005...Qc729.6658.83.019
12005...Qc728.5662.62.980
14005...Qc731.0666.42.873
16005...Qc736.2670.62.705
18005...Qc741.0572.62.537
20005...Qc745.4572.72.401
22005...Qc742.1573.22.498
25005...Qc729.0574.92.630
Sicilian Defense: Kan Variation, Modern Variation: popularity over time
YearShare %GamesWhite win %Black win %Draw %
20130.0253649.146.54.5
20140.022,12544.750.05.3
20150.036,05445.649.94.5
20160.0315,98646.749.04.3
20170.0227,61346.749.04.4
20180.0244,12347.148.34.6
20190.0260,13247.148.44.5
20200.02129,46047.347.45.3
20210.02132,04446.848.15.1
20220.02126,41547.247.94.9
20230.02127,74647.048.24.9
20240.02130,94547.048.24.8
20250.02127,31347.347.84.9
Sicilian Defense: Kan Variation, Modern Variation: popularity by time control
FormatShare %GamesWhite win %Black win %Draw %Sharpness
bullet0.01330,61745.951.03.20.968
blitz0.02756,15847.148.14.80.952
rapid0.01112,71247.147.45.50.945
Sicilian Defense: Kan Variation, Modern Variation: top candidate moves by rating bracket
Rating (Elo)1st move1st %2nd move2nd %3rd move3rd %
4005...Qc730.25...Bc515.95...b512.9
10005...Qc729.65...Nc614.95...b514.4
12005...Qc728.55...b519.75...Nc614.4
14005...Qc731.05...b520.55...Nc614.9
16005...Qc736.25...b520.25...Nc614.3
18005...Qc741.05...b517.85...Nc613.7
20005...Qc745.45...Nf614.45...Nc612.9
22005...Qc742.15...Nf616.75...Bc514.4
25005...Qc729.05...Bc528.75...Nf617.2
Sicilian Defense: Kan Variation, Modern Variation: top practitioners by side
SidePlayerGames
WhiteMladen Palac48
WhiteOleg Korneev42
WhiteThomas Luther40
BlackNormunds Miezis121
BlackFlorin Gheorghiu91
BlackPetar Velikov75
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Frequently Asked Questions

Sicilian Defense: Kan Variation, Modern Variation

What is this opening?

This opening begins with 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 and is classified under ECO code B42.

Is this opening good for beginners?

This opening can be played at any level. Beginners should focus on understanding the key strategic ideas rather than memorizing long theoretical lines. Our AI bots at various rating levels provide a great way to practice the opening concepts.

What are the win rates for this opening?

In a database of 868,870 games, White wins 47.1% of the time, Black wins 48%, and 4.9% are drawn. Notable players on the White side include Mladen Palac and Oleg Korneev. On the Black side, Normunds Miezis and Florin Gheorghiu are among the most frequent practitioners.

How can I practice this opening?

On Chessiverse, you can practice this opening by playing against our 600+ AI bots. Each bot has a unique playing style and opening repertoire, so you can find the perfect sparring partner for any level.

Sources

Brought to you by

IM John Bartholomew
IM John BartholomewCo-Founder & Chess Educator

International Master and chess educator. Co-founded Chessable and joined Chessiverse as co-founder. Best known for his "Climbing the Rating Ladder" YouTube series and structured opening courses.

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