Overview
Owen’s Defense Jobs in Талдыкорган, Jetisu Region, Kazakhstan at Chessiverse AB
Title: Owen’s Defense
Company: Chessiverse AB
Location: Талдыкорган, Jetisu Region, Kazakhstan
Articles/Opening Guides/Owen's Defense
Owen's Defense
- 14%
B001.e4 b6
Updated Mar 27, 2026
3 min read
Play this opening as…
♔ White♚ Black
TL;DR
Owen's Defence answers 1.e4 with 1…b6, planning Bb7 to pressure e4 along the long diagonal. Black accepts that White gets a free hand in the centre, betting on counterplay with c5 or d5. Rarely played at top level but a practical surprise weapon.
Reviewed by
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.
In This Article
- History and Notable Players
- Statistics
- Practice on Chessiverse
- Performance Across Rating Levels
- Time Control Patterns
- Move Diversity and Theory Depth
- Historical Trends
Summary
The Owen’s Defense arises after 1.e4 b6 and falls under ECO code B00. Named after the 19th-century English player John Owen, this uncommon reply to 1.e4 allows White to seize the center effortlessly with 2. d4, which is the standard and most natural response. Black’s plan is typically to fianchetto the dark-squared bishop to b7, aiming for long-diagonal pressure. Despite being rare at the top level, the Owen’s Defence retains a following among club players and offers transpositional possibilities into English Opening structures or other systems. With 50.8 million Lichess games across all rating levels, it is one of the most popular openings.
History and Notable Players
Among the most prolific practitioners on the White side are Viswanathan Anand (1534 games), Vlastimil Jansa (1449 games), Heikki MJ Westerinen (1409 games). On the Black side, notable exponents include Viktor Korchnoi (999 games), Loek Van Wely (853 games), Vassily Ivanchuk (835 games).
Statistics
Based on 50.8 million Lichess games across all rating levels:
- White wins: 50.2%
- Black wins: 45.9%
- Draws: 3.9%
The statistics show a roughly balanced opening where both sides have equal chances.
Practice on Chessiverse
The best way to learn the Owen's Defense is through practice. On Chessiverse, you can play chess against computer opponents that specialize in this opening. Our AI bots range from beginner to grandmaster level, each with unique playing styles — from aggressive attackers to solid defenders. Choose a bot that matches your rating and work your way up as you master the opening's key ideas.
Performance Across Rating Levels
The picture changes a lot as you climb the rating ladder. At 1200 Elo, the opening shows up in 1.07% of games (7,220,046 samples). White scores 49.6%, Black 46.8%, draws 3.6%. By 1800, popularity is 1.10% and White's score is 50.8% to Black's 44.9%. Among 2500-rated players the line appears in 0.23% of games and draws spike to 8.7%, indicating tight preparation. Positions also become less sharp as level rises (sharpness 0.96 → 0.91).
Time Control Patterns
The Owen's Defense skews toward bullet chess. In bullet, it appears in 1.45% of games (38,493,475); White wins 49.7%. Blitz shows 1.14% adoption across 40,825,282 games, White scoring 50.1%. In rapid, the share rises to 0.90% — 9,934,851 games, White 50.4%.
Move Diversity and Theory Depth
What players actually play after the opening moves depends heavily on rating. At 1200 Elo, the top reply is d4, played 33.4% of the time. There are 4 other moves seeing meaningful share, and 78.9% of games stick to established theory. Entropy: 2.48. By 2500, d4 dominates at 80.3% of replies; only 3 viable alternatives remain and 94.2% of moves are theory. Entropy drops to 1.18. That entropy collapse is the signature of a line where preparation pays off: at the top, players know the best move and play it.
Historical Trends
Tracking the Owen's Defense year over year shows a clear story. Adoption peaked in 2014 at 1.35% (122,002 games). By 2025 it sits at 1.12% — a 14% shift overall, leaving the line in decline.
Quick Facts
Main Line1.e4 b6
FENrnbqkbnr/p1pppppp/1p6/8/4P3/8/PPPP1PPP/RNBQKBNR w KQkq – 0 2
DifficultyBeginner
Parent OpeningKing's Pawn Game
Style
Unorthodox openings deviate from classical principles to surprise opponents and lead the game into unfamiliar territory. They can be highly effective when the opponent is unprepared.
50,760,133games on Lichess
50.2%
3.9%
45.9%
White wins Draws Black wins
Top Players
As White
- Viswanathan Anand1,534 games
- Vlastimil Jansa1,449 games
- Heikki MJ Westerinen1,409 games
As Black
- Viktor Korchnoi999 games
- Loek Van Wely853 games
- Vassily Ivanchuk835 games
Data from Lichess opening explorer (blitz & rapid)
Most Popular At1600
SharpnessVery Sharp
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.
White 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
White to move after the opening line
RatingMost Popular2nd3rd
400Nf327.6%d426.3%Bc413%
1000Nf331.5%d431.1%Bc411.7%
1200d433.4%Nf333.3%Bc412.1%
1400d436.2%Nf332.5%Bc411.8%
1600d441.4%Nf329.6%Bc410%
1800d450.2%Nf324.9%Bc47.1%
2000d461.3%Nf318.6%Nc37.5%
2200d472%Nf310.9%Nc38.6%
2500d480.3%Nc38.1%Nf35.8%
Popularity by Time Control
Bullet
1.4%38.5M
Blitz
1.1%40.8M
Rapid
0.90%9.9M
2% more decisive in bullet
Raw data tables (Lichess blitz + rapid)
Owen's Defense: popularity and win rates by player rating Rating (Elo) Share % Games White win % Black win % Draw % Sharpness 400 0.70 1,623,332 50.2 45.5 4.3 0.957 1000 0.89 3,722,839 49.9 46.3 3.8 0.962 1200 1.07 7,220,046 49.6 46.8 3.6 0.964 1400 1.30 11,804,324 49.6 46.7 3.7 0.963 1600 1.36 13,449,139 50.3 45.8 3.9 0.961 1800 1.10 9,206,311 50.8 44.9 4.2 0.958 2000 0.69 3,115,815 51.5 43.8 4.7 0.953 2200 0.35 586,489 50.9 43.5 5.6 0.944 2500 0.23 31,838 47.7 43.6 8.7 0.913 Owen's Defense: move-choice theory adherence by rating Rating (Elo) Top move Top move % Viable moves Theory % Entropy 400 Nf3 27.6 5 66.8 2.857 1000 Nf3 31.5 4 74.3 2.639 1200 d4 33.4 4 78.9 2.482 1400 d4 36.2 4 80.6 2.396 1600 d4 41.4 5 81.0 2.318 1800 d4 50.2 5 82.2 2.145 2000 d4 61.3 3 87.4 1.871 2200 d4 72.0 3 91.6 1.528 2500 d4 80.3 3 94.2 1.180 Owen's Defense: popularity over time Year Share % Games White win % Black win % Draw % 2013 1.30 37,458 53.2 43.6 3.2 2014 1.35 122,002 52.7 43.8 3.6 2015 1.18 262,504 51.6 44.8 3.6 2016 1.12 687,877 51.6 44.6 3.7 2017 1.17 1,334,562 51.0 45.2 3.8 2018 1.15 2,156,118 50.6 45.5 3.9 2019 1.12 3,224,651 50.4 45.7 3.8 2020 0.96 5,525,841 50.4 45.6 4.1 2021 0.99 7,574,376 50.2 45.8 4.0 2022 1.09 8,032,160 50.1 46.0 3.9 2023 1.11 8,772,391 50.0 46.0 4.0 2024 1.13 8,403,349 49.9 46.1 4.0 2025 1.12 8,286,053 49.9 46.1 3.9 Owen's Defense: popularity by time control Format Share % Games White win % Black win % Draw % Sharpness bullet 1.45 38,493,475 49.7 47.6 2.7 0.973 blitz 1.14 40,825,282 50.1 46.0 3.9 0.961 rapid 0.90 9,934,851 50.4 45.4 4.2 0.958 Owen's Defense: top candidate moves by rating bracket Rating (Elo) 1st move 1st % 2nd move 2nd % 3rd move 3rd % 400 Nf3 27.6 d4 26.3 Bc4 13.0 1000 Nf3 31.5 d4 31.1 Bc4 11.7 1200 d4 33.4 Nf3 33.3 Bc4 12.1 1400 d4 36.2 Nf3 32.5 Bc4 11.8 1600 d4 41.4 Nf3 29.6 Bc4 10.0 1800 d4 50.2 Nf3 24.9 Bc4 7.1 2000 d4 61.3 Nf3 18.6 Nc3 7.5 2200 d4 72.0 Nf3 10.9 Nc3 8.6 2500 d4 80.3 Nc3 8.1 Nf3 5.8 Owen's Defense: top practitioners by side Side Player Games White Viswanathan Anand 1,534 White Vlastimil Jansa 1,449 White Heikki MJ Westerinen 1,409 Black Viktor Korchnoi 999 Black Loek Van Wely 853 Black Vassily Ivanchuk 835
Play this opening as…
♔ White♚ Black
Training Recommendations
Targeted drills using our bots' unique playstyles to sharpen your skills in this opening.
♟️
Learning the Patterns in the Owen's Defense
novice
Eirik Ruy, a versatile Mediator, plays the position on its merits. Good fit if the basic ideas are clear but the middlegame still surprises you.
Eirik Ruy(1450)Mediator
⚡
Developing Strategy in the Owen's Defense
intermediate
Attacking Hunter King Beeshop forces the position, then simplifies once the initiative bites, while cliff Roads is an all-round Mediator comfortable across position types. A solid step up when the textbook lines stop being enough.
King Beeshop(1561)HunterCliff Roads(1652)Mediator
⚡
Proving Your Preparation in the Owen's Defense
skilled
Bis Mandala is an all-round Mediator comfortable across position types, while bruno Balloon is an aggressive Hunter who likes to cut play toward simpler positions. Practice at the skilled level to test your preparation under pressure.
Bis Mandala(2185)MediatorBruno Balloon(2294)Hunter
♟️
Master-Level Challenge in the Owen's Defense
advanced
Chad Sterling, a versatile Mediator, plays the position on its merits. The right pairing once you are ready for opponents that exploit every drift.
Chad Sterling(2399)Mediator
Frequently Asked Questions
What is the Owen's Defense?
The Owen's Defense begins with 1.e4 b6 and is classified under ECO code B00. The Owen's Defence, named after John Owen, is a very rare and uncommon response to the King’s pawn game as white can easily control the center with 2. d4 and usually black fianchettos the dark-squared bishop, the Owen’s defence is still popular among club players and this opening can be transposed to an English opening or other lines.
Is the Owen's Defense good for beginners?
The Owen's Defense 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 the Owen's Defense?
Across 50.8 million Lichess games, White wins 50.2% of the time, Black wins 45.9%, and 3.9% are drawn. Notable master practitioners on the White side include Viswanathan Anand and Vlastimil Jansa. On the Black side, Viktor Korchnoi and Loek Van Wely are among the most frequent practitioners.
How can I practice the Owen's Defense?
On Chessiverse, you can practice the Owen's Defense against AI bots specifically designed to play this opening. Our bots range from beginner (around 1450 rating) to advanced (2399+ rating), so you can find the right challenge for your level.
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Caro-Kann Defense: Advance Variation
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Sicilian Defense: Alapin Variation
Alapin (2.c3): the strategic Anti-Sicilian. Builds a classical centre and sidesteps Najdorf theory. Sveshnikov's lifelong line. Play vs. AI on Chessiverse.
Alekhine Defense
Alekhine's Defence: 1.e4 Nf6 baits White into chasing the knight, then strikes the overextended pawn chain. A hypermodern classic. Play vs. AI on Chessiverse.
Reviewed by
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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