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Old Indian Defense: Czech Variation, with Nc3

632K games from Lichess · Updated January 2026

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Analyze this line move by move

Black expected score · All ratings · All speeds

49.4%

45%55%
Floor49.3%

the worst score you would still get, 90% confident. At best 49.5%.

Measured over 632K games at this level and clock.

Playablewins about as often as it loses at this level

Roughly even — the middlegame decides more than this opening choice does.

Outcomes for Black

Draw 3.9 · Score = win + ½ of the draws · 632K games

Rank among the families Black can choose here
not ranked — this is a variation, not a family
Games in this context
632K
Best context
51.9% at 0-999 Bullet
Worst context
37.8% at 2500+ Blitz
Average game length
36 moves
Games that end decisively
96.1%
Draws
3.9%

Best and worst are the strongest and weakest squares with at least 500 games behind them. The table further down shows every square, including thinner ones.

Where it holds · Black score by rating × clock

Green is clearly ahead for Black, grey is around even, red is behind. Tap a cell to measure there, and again to clear. It falls away as the rating rises: 48.8% at 0-999, 40.8% at 2500+.

RatingUBBulleBlitzRapidClass
0-999
1000-1199
1200-1399
1400-1599
1600-1799
1800-1999
2000-2199
2200-2499
2500+—

Expected score matrix by rating bracket and time control

  • 0-999 rating, UltraBullet: 39.5% expected score (8 games)
  • 0-999 rating, Bullet: 51.9% expected score (2,064 games)
  • 0-999 rating, Blitz: 50.7% expected score (2,373 games)
  • 0-999 rating, Rapid: 51.8% expected score (365 games)
  • 0-999 rating, Classical: 50.0% expected score (2 games)
  • 1000-1199 rating, UltraBullet: 50.0% expected score (22 games)
  • 1000-1199 rating, Bullet: 50.1% expected score (6,700 games)
  • 1000-1199 rating, Blitz: 48.1% expected score (8,373 games)
  • 1000-1199 rating, Rapid: 48.5% expected score (1,716 games)
  • 1000-1199 rating, Classical: 37.1% expected score (14 games)
  • 1200-1399 rating, UltraBullet: 58.8% expected score (90 games)
  • 1200-1399 rating, Bullet: 50.8% expected score (14,904 games)
  • 1200-1399 rating, Blitz: 49.7% expected score (20,522 games)
  • 1200-1399 rating, Rapid: 47.4% expected score (5,340 games)
  • 1200-1399 rating, Classical: 49.3% expected score (139 games)
  • 1400-1599 rating, UltraBullet: 48.8% expected score (341 games)
  • 1400-1599 rating, Bullet: 50.5% expected score (24,863 games)
  • 1400-1599 rating, Blitz: 50.5% expected score (43,249 games)
  • 1400-1599 rating, Rapid: 48.2% expected score (12,262 games)
  • 1400-1599 rating, Classical: 51.2% expected score (489 games)
  • 1600-1799 rating, UltraBullet: 48.9% expected score (452 games)
  • 1600-1799 rating, Bullet: 51.0% expected score (41,273 games)
  • 1600-1799 rating, Blitz: 50.2% expected score (68,097 games)
  • 1600-1799 rating, Rapid: 49.1% expected score (18,843 games)
  • 1600-1799 rating, Classical: 48.8% expected score (843 games)
  • 1800-1999 rating, UltraBullet: 39.2% expected score (160 games)
  • 1800-1999 rating, Bullet: 49.7% expected score (49,932 games)
  • 1800-1999 rating, Blitz: 49.7% expected score (92,418 games)
  • 1800-1999 rating, Rapid: 48.6% expected score (20,170 games)
  • 1800-1999 rating, Classical: 46.1% expected score (960 games)
  • 2000-2199 rating, UltraBullet: 51.7% expected score (87 games)
  • 2000-2199 rating, Bullet: 49.9% expected score (48,377 games)
  • 2000-2199 rating, Blitz: 49.1% expected score (65,026 games)
  • 2000-2199 rating, Rapid: 46.6% expected score (10,577 games)
  • 2000-2199 rating, Classical: 43.5% expected score (222 games)
  • 2200-2499 rating, UltraBullet: 58.9% expected score (21 games)
  • 2200-2499 rating, Bullet: 48.2% expected score (40,371 games)
  • 2200-2499 rating, Blitz: 45.6% expected score (19,704 games)
  • 2200-2499 rating, Rapid: 45.6% expected score (2,130 games)
  • 2200-2499 rating, Classical: 21.5% expected score (30 games)
  • 2500+ rating, UltraBullet: 50.0% expected score (2 games)
  • 2500+ rating, Bullet: 45.3% expected score (8,086 games)
  • 2500+ rating, Blitz: 37.8% expected score (503 games)
  • 2500+ rating, Rapid: 30.0% expected score (26 games)

Related Openings

Parent
Old Indian Defense
49.1%
Variations (5)
Old Indian Defense: Czech Variation, with Nf3
48.7%
Old Indian Defense: Ukrainian Variation
45.5%
Old Indian Defense: Two Knights Variation
52.1%
Old Indian Defense: Normal Variation
47.9%
Old Indian Defense: Janowski Variation
50.0%
Analyze Old Indian Defense: Czech Variation, with Nc3 PositionsSee what each move is worth at your rating, move by move

Methodology

Across every rating and clock, the Old Indian Defense: Czech Variation, with Nc3 scores 49.4% for Black — we are 90% confident the real figure is between 49.3% and 49.5% — from 632K Lichess games. Win rate, draw rate and loss rate come from games played December 2023 to November 2025.

How the figures are made
Whose games these are
632K+ rated games played on Lichess (2023-12 to 2025-11). The games are Lichess’s and free for anyone to use. What is ours is the reading of them. Last rebuilt January 2026.
Which games we count
  • Rated games only — nothing casual.
  • Both players within 200 rating points of each other. A mismatch tells you about the gap, not about the opening.
  • At least 2 moves played.
  • A game is filed under White’s rating.
Why every number comes with a range
A number off a few hundred games is a guess. The same number off millions is a fact. The range is what tells them apart, and it is what the lists rank on — so an opening cannot reach the top on a lucky run of forty games. The more games behind a figure, the narrower its range.
How much we need before we say anything
An opening page needs 100 games. A gambit needs 50 games at a rating before we will say whether it pays there. The chaos and trap lists need 500 games overall and 250 games at one rating or clock.

Frequently Asked Questions

What is the Old Indian Defense: Czech Variation, with Nc3 win rate?

Playing the Old Indian Defense: Czech Variation, with Nc3, Black wins 47.5%, draws 3.9% and loses 48.7%. Counting a draw as half a point, that is an Expected Score of 49.4%. It rests on 632K rated games from Lichess.

At what rating does the Old Indian Defense: Czech Variation, with Nc3 perform best?

The Old Indian Defense: Czech Variation, with Nc3 performs best for Black at 0-999, with an Expected Score of 51.3% (4.8K games) and the highest Floor of any rating with enough games to read.

Is the Old Indian Defense: Czech Variation, with Nc3 better in blitz or rapid?

For Black, the Old Indian Defense: Czech Variation, with Nc3 scores higher in Blitz: an Expected Score of 49.5% in Blitz (320K games) against 48.2% in Rapid (71K games).

How sharp is the Old Indian Defense: Czech Variation, with Nc3?

The Old Indian Defense: Czech Variation, with Nc3 has a sharpness score of 96.1 (very decisive), meaning 96.1% of games end decisively. Average game length is 36 moves.

What is the Old Indian Defense: Czech Variation, with Nc3 win rate at 0-999?

At 0-999, Black wins 50.2%, draws 2.1% and loses 47.7%. Counting a draw as half a point, that is an Expected Score of 51.3%. It rests on 4.8K Lichess games, which average 27 moves.

What is the Old Indian Defense: Czech Variation, with Nc3 win rate at 1000-1199?

At 1000-1199, Black wins 47.7%, draws 2.5% and loses 49.9%. Counting a draw as half a point, that is an Expected Score of 48.9%. It rests on 17K Lichess games, which average 29 moves.

What is the Old Indian Defense: Czech Variation, with Nc3 win rate at 1200-1399?

At 1200-1399, Black wins 48.4%, draws 2.8% and loses 48.8%. Counting a draw as half a point, that is an Expected Score of 49.8%. It rests on 41K Lichess games, which average 32 moves.

What is the Old Indian Defense: Czech Variation, with Nc3 win rate at 1400-1599?

At 1400-1599, Black wins 48.5%, draws 3.2% and loses 48.3%. Counting a draw as half a point, that is an Expected Score of 50.1%. It rests on 81K Lichess games, which average 33 moves.

What is the Old Indian Defense: Czech Variation, with Nc3 win rate at 1600-1799?

At 1600-1799, Black wins 48.5%, draws 3.6% and loses 48.0%. Counting a draw as half a point, that is an Expected Score of 50.3%. It rests on 130K Lichess games, which average 35 moves.

What is the Old Indian Defense: Czech Variation, with Nc3 win rate at 1800-1999?

At 1800-1999, Black wins 47.4%, draws 4.1% and loses 48.4%. Counting a draw as half a point, that is an Expected Score of 49.5%. It rests on 164K Lichess games, which average 37 moves.

What is the Old Indian Defense: Czech Variation, with Nc3 win rate at 2000-2199?

At 2000-2199, Black wins 47.0%, draws 4.4% and loses 48.7%. Counting a draw as half a point, that is an Expected Score of 49.2%. It rests on 124K Lichess games, which average 39 moves.

What is the Old Indian Defense: Czech Variation, with Nc3 win rate at 2200-2499?

At 2200-2499, Black wins 44.9%, draws 4.6% and loses 50.5%. Counting a draw as half a point, that is an Expected Score of 47.2%. It rests on 62K Lichess games, which average 40 moves.

What is the Old Indian Defense: Czech Variation, with Nc3 win rate at 2500+?

At 2500+, Black wins 41.9%, draws 5.7% and loses 52.3%. Counting a draw as half a point, that is an Expected Score of 44.8%. It rests on 8.6K Lichess games, which average 43 moves.

What is the Old Indian Defense: Czech Variation, with Nc3 win rate in UltraBullet?

In UltraBullet, Black wins 47.7%, draws 1.8% and loses 50.4%. Counting a draw as half a point, that is an Expected Score of 48.7%. It rests on 1.2K Lichess games.

What is the Old Indian Defense: Czech Variation, with Nc3 win rate in Bullet?

In Bullet, Black wins 48.3%, draws 2.9% and loses 48.8%. Counting a draw as half a point, that is an Expected Score of 49.8%. It rests on 237K Lichess games.

What is the Old Indian Defense: Czech Variation, with Nc3 win rate in Blitz?

In Blitz, Black wins 47.3%, draws 4.3% and loses 48.4%. Counting a draw as half a point, that is an Expected Score of 49.5%. It rests on 320K Lichess games.

What is the Old Indian Defense: Czech Variation, with Nc3 win rate in Rapid?

In Rapid, Black wins 45.6%, draws 5.2% and loses 49.2%. Counting a draw as half a point, that is an Expected Score of 48.2%. It rests on 71K Lichess games.

What is the Old Indian Defense: Czech Variation, with Nc3 win rate in Classical?

In Classical, Black wins 44.4%, draws 6.1% and loses 49.5%. Counting a draw as half a point, that is an Expected Score of 47.5%. It rests on 2.7K Lichess games.

Is the Old Indian Defense: Czech Variation, with Nc3 a good opening?

The Old Indian Defense: Czech Variation, with Nc3 is about level. Across all ratings, Black wins 47.5% of its games and loses 48.7%. It performs best at 0-999. Your results depend on your rating, time control, and how well you know the typical plans.