Prepare against William Perez
Colombia · World #44,412 classical · FIDE ID 4460260
Our database contains 126 games by William Perez, covering Jul 2015 to Jul 2026. Below you'll find William Perez's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout William Perez 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 | 1,916 | 2,001 | Oct 2021 |
| Rapid | 1,981 | 1,981 | Jul 2026 |
| Blitz | 1,895 | 1,909 | Jan 2023 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 126 | 64 | 20 | 42 | 50.8% |
| As White | 62 | 31 | 9 | 22 | 50.0% |
| As Black | 64 | 33 | 11 | 20 | 51.6% |
Move-by-move preparation stats
Straight from the preparation tree built over all of William Perez's games — the same tree the interactive prep board lets you walk to any depth. Scores are from William Perez's side.
First moves as White (62 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c4 | 33 | 53.2% | 53.0% |
| Nf3 | 14 | 22.6% | 53.6% |
| d4 | 11 | 17.7% | 72.7% |
| e4 | 3 | 4.8% | 83.3% |
| g3 | 1 | 1.6% | 0.0% |
Main lines as White
- 1.c4 — 53% of White games, 53.0% score
- …c5 (33% of these games) — Perez usually continues Nc3 (57.1% score)
- …Nf6 (30% of these games) — Perez usually continues g3 (71.4% score)
- …e5 (24% of these games) — Perez usually continues Nc3 (14.3% score)
- 1.Nf3 — 23% of White games, 53.6% score
- …Nf6 (36% of these games) — Perez usually continues b3 (40.0% score)
- …c5 (29% of these games) — Perez usually continues b3 (33.3% score)
- …d5 (14% of these games) — Perez usually continues b3 (100.0% score)
As Black against 1.e4 (36 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c6 | 22 | 61.1% | 65.9% |
| c5 | 13 | 36.1% | 92.3% |
| d6 | 1 | 2.8% | 50.0% |
As Black against 1.d4 (14 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 13 | 92.9% | 50.0% |
| c5 | 1 | 7.1% | 100.0% |
William Perez's chess games
All 126 games by William Perez in the Chess.ceo database (Jul 2015 - Jul 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: 64 wins, 20 draws, 42 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| A22 | English Opening | 12 | 7/1/4 | 58.3% |
| A12 | Réti Opening | 11 | 4/4/3 | 36.4% |
| A36 | English Opening: Symmetrical | 10 | 4/3/3 | 40.0% |
| A22 | English Opening: Reverse Sicilian | 8 | 2/0/6 | 25.0% |
| A57 | Benoni Defense | 3 | 2/0/1 | 66.7% |
| B10 | English Opening: Slav Setup | 2 | 1/0/1 | 50.0% |
| E46 | Nimzo-Indian Defense | 2 | 2/0/0 | 100.0% |
| A87 | Dutch Defense | 1 | 0/0/1 | 0.0% |
| A84 | Horwitz Defense | 1 | 0/0/1 | 0.0% |
| C06 | French: Tarrasch Variation | 1 | 1/0/0 | 100.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| A36 | English Opening: Symmetrical | 8 | 1/1/6 | 12.5% |
| B10 | Caro-Kann | 6 | 5/1/0 | 83.3% |
| B43 | Sicilian | 6 | 6/0/0 | 100.0% |
| B13 | Caro-Kann: Exchange Variation | 6 | 3/1/2 | 50.0% |
| B19 | Caro-Kann: Classical | 6 | 3/2/1 | 50.0% |
| D71 | Grünfeld Defense | 3 | 0/1/2 | 0.0% |
| A22 | English Opening: Reverse Sicilian | 3 | 1/0/2 | 33.3% |
| B12 | Caro-Kann: Advance Variation | 2 | 1/0/1 | 50.0% |
| D02 | Indian Defense | 2 | 0/1/1 | 0.0% |
| D41 | Catalan | 2 | 1/0/1 | 50.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Oct 2020 | Igor Tokuichi Kikuchi Cadilhac | 2,323 | FISU World University | B56 |
| Oct 2020 | Gerardo Antonio Gracia Alvarez | 2,308 | FISU World University | B13 |
| Oct 2021 | Rafael Araque | 2,243 | Manizales Las Americas Open A | A57 |
| Aug 1997 | Georgios Alexopoulos | 2,240 | US Open 1998 | A12 |
| Oct 2020 | Andre Meylan | 2,205 | FISU World University | E52 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| 18th American Continental | 2024 | 9 | 5 | 1,996 |
| Manizales Las Americas Open A | 2021 | 9 | 4 | 2,086 |
| FISU World University | 2020 | 9 | 8 | 2,463 |
| 9th ch-Iberoamerican | 2023 | 8 | 4 | 1,829 |
| 28th Manizales Open | 2023 | 8 | 5.5 | 2,070 |
| ch-COL | 2022 | 8 | 5 | 1,940 |
| Medellin Raza Cup | 2022 | 7 | 3.5 | 1,796 |
| 1st Sabaneta Open B | 2022 | 7 | 5.5 | 1,887 |
Interactive opening tree from all 126 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find William Perez's chess games?
126 games by William Perez, from Jul 2015 to Jul 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 William Perez has played.
What does William Perez play on the first move as White?
Across 62 games with White in our database, William Perez opens with 1.c4 (53% of games), 1.Nf3 (23% of games), 1.d4 (18% of games). Against 1.e4 as Black, William Perez answers 1...c6 (61% of games), 1...c5 (36% of games), 1...d6 (3% of games). Against 1.d4: 1...Nf6 (93% of games), 1...c5 (7% of games).
What openings does William Perez play as White?
As White, William Perez's most-played openings in our database are: English Opening (12 games, 58.3% win rate); Réti Opening (11 games, 36.4% win rate); English Opening: Symmetrical (10 games, 40.0% win rate). The full breakdown of 62 games with White is in the table above.
What openings does William Perez play as Black?
As Black, William Perez most often plays: English Opening: Symmetrical (8 games, 12.5% win rate); Caro-Kann (6 games, 83.3% win rate); Sicilian (6 games, 100.0% win rate). See the table above for the top ten Black openings across 64 games.
What is William Perez's FIDE rating?
William Perez is currently rated 1,916 in classical chess, 1,981 in rapid and 1,895 in blitz. Peak classical rating: 2,001 (Oct 2021).
How many games has William Perez played?
Our database contains 126 games by William Perez, covering Jul 2015 to Jul 2026. Overall record: 64 wins, 20 draws, 42 losses (50.8% win rate).
How do I prepare against William Perez?
126 games by William Perez 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.