Prepare against John Ontiveros
Iceland · World #68,121 classical · FIDE ID 2303981
When preparing against John Ontiveros, expect 1.d4 in 100% of White games. Against 1.e4 the reply is 1...e5 (48% of games); against 1.d4, 1...Nf6 (53%).
Our database contains 101 games by John Ontiveros, covering Mar 2012 to Nov 2026. Below you'll find John Ontiveros's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout John Ontiveros 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 | 1,829 | 1,837 | Oct 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 101 | 28 | 21 | 52 | 27.7% |
| As White | 50 | 16 | 9 | 25 | 32.0% |
| As Black | 51 | 12 | 12 | 27 | 23.5% |
Move-by-move preparation stats
Straight from the preparation tree built over all of John Ontiveros's games — the same tree the interactive prep board lets you walk to any depth. Scores are from John Ontiveros's side.
First moves as White (50 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 50 | 100.0% | 41.0% |
Main lines as White
- 1.d4 — 100% of White games, 41.0% score
- …Nf6 (46% of these games) — Ontiveros usually continues c4 (25.0% score)
- …d5 (30% of these games) — Ontiveros usually continues c4 (60.0% score)
- …f5 (8% of these games) — Ontiveros usually continues c4 (25.0% score)
As Black against 1.e4 (29 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e5 | 14 | 48.3% | 28.6% |
| c6 | 8 | 27.6% | 50.0% |
| d5 | 4 | 13.8% | 25.0% |
| c5 | 3 | 10.3% | 0.0% |
As Black against 1.d4 (17 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 9 | 52.9% | 44.4% |
| d5 | 8 | 47.1% | 43.8% |
John Ontiveros's chess games
All 101 games by John Ontiveros in the Chess.ceo database (Mar 2012 - Nov 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: 28 wins, 21 draws, 52 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D37 | Indian Defense | 8 | 5/1/2 | 62.5% |
| D15 | Slav Defense | 7 | 0/3/4 | 0.0% |
| A57 | Benoni Defense | 5 | 1/1/3 | 20.0% |
| E38 | Nimzo-Indian: Classical Variation | 5 | 1/1/3 | 20.0% |
| A85 | Dutch Defense | 4 | 1/0/3 | 25.0% |
| E11 | Bogo-Indian Defense | 3 | 0/2/1 | 0.0% |
| A84 | Semi-Slav Defense | 3 | 1/0/2 | 33.3% |
| A40 | English Defense | 2 | 2/0/0 | 100.0% |
| E14 | Queen's Indian Defense | 2 | 0/0/2 | 0.0% |
| E92 | King's Indian Defense: Petrosian Variation | 2 | 1/0/1 | 50.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B18 | Caro-Kann: Classical | 4 | 2/1/1 | 50.0% |
| B01 | Scandinavian Defense: Main Line | 4 | 0/2/2 | 0.0% |
| A50 | Indian Defense | 4 | 0/0/4 | 0.0% |
| D02 | Queen's Pawn Game | 3 | 2/0/1 | 66.7% |
| E91 | King's Indian Defense: Orthodox Variation | 3 | 1/1/1 | 33.3% |
| C62 | Ruy Lopez | 3 | 0/2/1 | 0.0% |
| B12 | Caro-Kann: Advance Variation | 3 | 0/1/2 | 0.0% |
| C55 | Italian Game | 3 | 0/0/3 | 0.0% |
| A14 | English Opening | 2 | 0/0/2 | 0.0% |
| C23 | King's Gambit | 2 | 1/0/1 | 50.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Apr 2019 | Lenka Ptacnikova | 2,202 | Reykjavik Open | C41 |
| Mar 2012 | Michael Shepherd | 2,011 | Reykjavik Open | A40 |
| Sep 2015 | Olafur Kjartansson | 1,984 | chT2-ISL 1516 | E14 |
| Mar 2014 | Alexandre Pacheco Saraiva | 1,963 | Reykjavik Open | D04 |
| Jan 2012 | Unnar Thor Bachmann | 1,899 | ch-Reykjavik | D03 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Reykjavik Open | 2019 | 69 | 25 | 1,755 |
| 28th Politiken Cup | 2006 | 9 | 3.5 | 1,859 |
| ch-Reykjavik | 2012 | 9 | 4 | 1,964 |
| Reykjavik Skakmot Open | 2015 | 7 | 3.5 | 1,876 |
| chT2-ISL 1516 | 2016 | 7 | 2.5 | 1,807 |
Interactive opening tree from all 101 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find John Ontiveros's chess games?
101 games by John Ontiveros, from Mar 2012 to Nov 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 John Ontiveros has played.
What does John Ontiveros play on the first move as White?
Across 50 games with White in our database, John Ontiveros opens with 1.d4 (100% of games). Against 1.e4 as Black, John Ontiveros answers 1...e5 (48% of games), 1...c6 (28% of games), 1...d5 (14% of games). Against 1.d4: 1...Nf6 (53% of games), 1...d5 (47% of games).
What openings does John Ontiveros play as White?
As White, John Ontiveros's most-played openings in our database are: Indian Defense (8 games, 62.5% win rate); Slav Defense (7 games, 0.0% win rate); Benoni Defense (5 games, 20.0% win rate). The full breakdown of 50 games with White is in the table above.
What openings does John Ontiveros play as Black?
As Black, John Ontiveros most often plays: Caro-Kann: Classical (4 games, 50.0% win rate); Scandinavian Defense: Main Line (4 games, 0.0% win rate); Indian Defense (4 games, 0.0% win rate). See the table above for the top ten Black openings across 51 games.
What is John Ontiveros's FIDE rating?
John Ontiveros is currently rated 1,829 in classical chess. Peak classical rating: 1,837 (Oct 2026).
How many games has John Ontiveros played?
Our database contains 101 games by John Ontiveros, covering Mar 2012 to Nov 2026. Overall record: 28 wins, 21 draws, 52 losses (27.7% win rate).
How do I prepare against John Ontiveros?
101 games by John Ontiveros 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.