Prepare against Ethan Guo
FM · United States · World #2,174 classical · FIDE ID 30976359
When preparing against Ethan Guo, expect 1.e4 in 87% of White games. Against 1.e4 the reply is 1...c5 (93% of games); against 1.d4, 1...Nf6 (89%). Lowest win rate among frequent openings: Caro-Kann: Two Knights Variation as White, 16.7% over 18 games.
Our database contains 602 games by Ethan Guo, covering Jul 2021 to Sep 2026. Below you'll find Ethan Guo's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Ethan Guo before a game. You can open the same data in the free interactive preparation workstation, which builds a move-by-move opening tree from every game.
Ratings
| Time control | Current | Peak | Peak date |
|---|---|---|---|
| Classical | 2,375 | 2,404 | Jun 2026 |
| Rapid | 2,257 | 2,257 | Sep 2026 |
| Blitz | 2,278 | 2,288 | Mar 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 602 | 237 | 157 | 208 | 39.4% |
| As White | 311 | 128 | 79 | 104 | 41.2% |
| As Black | 291 | 109 | 78 | 104 | 37.5% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Ethan Guo's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Ethan Guo's side.
First moves as White (311 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 272 | 87.5% | 51.1% |
| Nf3 | 16 | 5.1% | 87.5% |
| d4 | 14 | 4.5% | 57.1% |
| a3 | 4 | 1.3% | 100.0% |
| b3 | 3 | 1.0% | 33.3% |
| c4 | 1 | 0.3% | 50.0% |
Main lines as White
- 1.e4 — 87% of White games, 51.1% score
- …c5 (44% of these games) — Guo usually continues Nf3 (56.7% score)
- …e5 (24% of these games) — Guo usually continues Nf3 (51.6% score)
- …c6 (15% of these games) — Guo usually continues d4 (43.3% score)
- 1.Nf3 — 5% of White games, 87.5% score
- …Nf6 (44% of these games) — Guo usually continues g3 (66.7% score)
- …d5 (19% of these games) — Guo usually continues b3 (100.0% score)
- …g6 (13% of these games) — Guo usually continues d4 (100.0% score)
As Black against 1.e4 (145 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 135 | 93.1% | 51.9% |
| Nc6 | 3 | 2.1% | 33.3% |
| a6 | 2 | 1.4% | 50.0% |
| c6 | 2 | 1.4% | 0.0% |
| e6 | 2 | 1.4% | 25.0% |
| e5 | 1 | 0.7% | 50.0% |
As Black against 1.d4 (96 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 85 | 88.5% | 58.2% |
| d5 | 9 | 9.4% | 55.6% |
| a6 | 1 | 1.0% | 0.0% |
| e6 | 1 | 1.0% | 50.0% |
Ethan Guo's chess games
All 602 games by Ethan Guo in the Chess.ceo database (Jul 2021 - Sep 2026) are free to browse, search and replay: filter by opening, opponent, event or date on the player page, or step through any game on the analysis board. Record: 237 wins, 157 draws, 208 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B28 | Sicilian | 37 | 15/11/11 | 40.5% |
| B90 | Sicilian: Najdorf | 35 | 15/10/10 | 42.9% |
| C03 | French: Tarrasch Variation | 23 | 8/4/11 | 34.8% |
| C50 | Italian Game | 23 | 7/6/10 | 30.4% |
| B11 | Caro-Kann: Two Knights Variation | 18 | 3/8/7 | 16.7% |
| C50 | Italian Game: Giuoco Pianissimo | 13 | 7/3/3 | 53.8% |
| B45 | Sicilian: Four Knights | 8 | 2/3/3 | 25.0% |
| C54 | Italian Game: Classical Variation | 8 | 3/2/3 | 37.5% |
| A05 | Réti Opening | 8 | 7/0/1 | 87.5% |
| B13 | Caro-Kann: Exchange Variation | 7 | 2/2/3 | 28.6% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B90 | Sicilian: Najdorf | 64 | 21/24/19 | 32.8% |
| B50 | Sicilian | 35 | 16/7/12 | 45.7% |
| D85 | Grünfeld Defense | 21 | 8/6/7 | 38.1% |
| A07 | Réti Opening | 15 | 6/1/8 | 40.0% |
| B23 | Sicilian: Closed | 14 | 3/3/8 | 21.4% |
| A46 | Indian Defense | 14 | 6/2/6 | 42.9% |
| B51 | Sicilian: Moscow Variation | 11 | 5/3/3 | 45.5% |
| A15 | English Opening | 9 | 2/3/4 | 22.2% |
| A37 | English Opening: Symmetrical | 8 | 1/4/3 | 12.5% |
| E40 | Nimzo-Indian: Rubinstein System | 7 | 3/0/4 | 42.9% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Aug 2026 | Chithambaram VR. Aravindh | 2,677 | Titled Tue 25th Aug 2026 | B33 |
| Aug 2026 | Samvel Ter-Sahakyan | 2,613 | Titled Tue 11th Aug 2026 | E11 |
| Jul 2024 | Markus Ragger | 2,603 | Titled Tue Early | D85 |
| May 2026 | Cristobal Henriquez Villagra | 2,603 | Titled Tuesday | B36 |
| Mar 2026 | Stamatis Kourkoulos-Arditis | 2,582 | Titled Tue | A45 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Titled Tuesday | 2026 | 129 | 74.5 | 2,360 |
| 3rd 3-0 Thursday | 2026 | 31 | 20 | 2,409 |
| Wch U10 | 2023 | 21 | 15 | 1,877 |
| 1st 3-0 Thursday | 2026 | 16 | 9 | 2,321 |
| World Cadets U12 2025 | 2025 | 11 | 8.5 | 2,322 |
| World Youth Open U14 2026 | 2026 | 11 | 8 | 2,437 |
| Wch U10 rapid | 2023 | 11 | 6.5 | 1,572 |
| 3rd 3-0 Thu 30th Jul 2026 | 2026 | 11 | 5 | 2,281 |
Interactive opening tree from all 602 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Ethan Guo's chess games?
602 games by Ethan Guo, from Jul 2021 to Sep 2026, are free to browse and replay move by move — no signup needed. The preparation view groups them into an opening tree showing every line Ethan Guo has played.
What does Ethan Guo play on the first move as White?
Across 311 games with White in our database, Ethan Guo opens with 1.e4 (87% of games), 1.Nf3 (5% of games), 1.d4 (5% of games). Against 1.e4 as Black, Ethan Guo answers 1...c5 (93% of games), 1...Nc6 (2% of games), 1...a6 (1% of games). Against 1.d4: 1...Nf6 (89% of games), 1...d5 (9% of games), 1...a6 (1% of games).
What openings does Ethan Guo play as White?
As White, Ethan Guo's most-played openings in our database are: Sicilian (37 games, 40.5% win rate); Sicilian: Najdorf (35 games, 42.9% win rate); French: Tarrasch Variation (23 games, 34.8% win rate). The full breakdown of 311 games with White is in the table above.
What openings does Ethan Guo play as Black?
As Black, Ethan Guo most often plays: Sicilian: Najdorf (64 games, 32.8% win rate); Sicilian (35 games, 45.7% win rate); Grünfeld Defense (21 games, 38.1% win rate). See the table above for the top ten Black openings across 291 games.
What is Ethan Guo's FIDE rating?
Ethan Guo is currently rated 2,375 in classical chess, 2,257 in rapid and 2,278 in blitz. Peak classical rating: 2,404 (Jun 2026).
How many games has Ethan Guo played?
Our database contains 602 games by Ethan Guo, covering Jul 2021 to Sep 2026. Overall record: 237 wins, 157 draws, 208 losses (39.4% win rate).
How do I prepare against Ethan Guo?
602 games by Ethan Guo reveal their opening repertoire, most-played lines, and the variations where they score worst — the raw material for targeted preparation. The interactive opening tree lets you walk every line to any depth.