Prepare against William Alfaro
FM · NIC · World #20,199 classical · FIDE ID 6100457
When preparing against William Alfaro, expect 1.d4 in 70% of White games. Against 1.e4 the reply is 1...c5 (50% of games); against 1.d4, 1...Nf6 (82%). Lowest win rate among frequent openings: Benoni Defense as Black, 34.8% over 23 games.
Our database contains 335 games by William Alfaro, covering Jul 2003 to Oct 2026. Below you'll find William Alfaro's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout William Alfaro 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 | 2,056 | 2,231 | Jan 2012 |
| Rapid | 2,068 | 2,204 | Aug 2015 |
| Blitz | 2,074 | 2,171 | Dec 2012 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 335 | 130 | 131 | 74 | 38.8% |
| As White | 167 | 69 | 62 | 36 | 41.3% |
| As Black | 168 | 61 | 69 | 38 | 36.3% |
FIDE rated record
From FIDE's official rated-game ledger (2007-2026): 1,280 rated games against 588 different opponents, across 166 events in 16 countries. These counts cover FIDE-rated play only, so they differ from the database totals above.
By time control
| Format | Games | W | D | L | Win rate | Avg opp | Perf | Unbeaten |
|---|---|---|---|---|---|---|---|---|
| Classical | 901 | 405 | 364 | 132 | 45.0% | 2,029 | 2,137 | 39 |
| Rapid | 108 | 63 | 18 | 27 | 58.3% | 1,928 | 2,037 | 12 |
| Blitz | 200 | 118 | 26 | 56 | 59.0% | 1,929 | 2,043 | 14 |
Against the field
| Opposition | Games | W | D | L | Win rate |
|---|---|---|---|---|---|
| Against higher-rated | 338 | 37 | 167 | 134 | 10.9% |
| Against lower-rated | 844 | 495 | 245 | 104 | 58.6% |
Wins over titled players: 17 vs IM · 59 vs FM · 38 vs CM · 6 vs WIM · 16 vs WFM · 6 vs WCM.
Tournament wins
16 tournament wins from 142 events, 6 of them outright.
Year by year
| Year | Games | W | D | L | Avg opp | Perf |
|---|---|---|---|---|---|---|
| 2026 | 53 | 24 | 13 | 16 | 2,012 | 2,059 |
| 2025 | 67 | 43 | 8 | 16 | 1,889 | 2,044 |
| 2024 | 74 | 39 | 23 | 12 | 2,003 | 2,142 |
| 2023 | 126 | 51 | 45 | 30 | 1,998 | 2,062 |
| 2022 | 63 | 30 | 18 | 15 | 1,975 | 2,060 |
| 2021 | 53 | 22 | 22 | 9 | 1,988 | 2,081 |
| 2020 | 57 | 32 | 17 | 8 | 1,907 | 2,086 |
| 2019 | 69 | 34 | 24 | 11 | 1,928 | 2,054 |
| 2018 | 81 | 40 | 22 | 19 | 1,984 | 2,081 |
| 2017 | 92 | 35 | 41 | 16 | 2,051 | 2,121 |
| 2016 | 86 | 38 | 31 | 17 | 2,053 | 2,149 |
| 2015 | 59 | 27 | 20 | 12 | 2,075 | 2,144 |
| 2014 | 43 | 20 | 19 | 4 | 2,027 | 2,164 |
| 2013 | 43 | 23 | 12 | 8 | 2,000 | 2,120 |
| 2012 | 114 | 51 | 40 | 23 | 2,069 | 2,153 |
| 2011 | 28 | 14 | 11 | 3 | 2,097 | 2,255 |
| 2010 | 18 | 11 | 6 | 1 | 2,093 | 2,279 |
| 2009 | 71 | 37 | 21 | 13 | 2,038 | 2,124 |
| 2008 | 49 | 21 | 20 | 8 | 2,144 | 2,222 |
| 2007 | 34 | 16 | 11 | 7 | 2,181 | 2,181 |
Where William Alfaro has played
Nicaragua (103) · Mexico (23) · Costa Rica (10) · El Salvador (9) · United States (4) · Brazil (3) · Honduras (3) · Panama (2) · Venezuela (2) · Azerbaijan (1) · Georgia (1) · Germany (1) · Guatemala (1) · Hungary (1) · India (1) · Türkiye (1)
Move-by-move preparation stats
Straight from the preparation tree built over all of William Alfaro's games — the same tree the interactive prep board lets you walk to any depth. Scores are from William Alfaro's side.
First moves as White (33 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 23 | 69.7% | 45.7% |
| Nf3 | 5 | 15.2% | 50.0% |
| e4 | 5 | 15.2% | 80.0% |
Main lines as White
- 1.d4 — 70% of White games, 45.7% score
- …Nf6 (52% of these games) — Alfaro usually continues c4 (68.8% score)
- …d5 (39% of these games) — Alfaro usually continues c4 (35.7% score)
- …e6 (4% of these games) — Alfaro usually continues c4 (50.0% score)
- 1.Nf3 — 15% of White games, 50.0% score
- …Nf6 (40% of these games) — Alfaro usually continues g3 (100.0% score)
- …d5 (40% of these games) — Alfaro usually continues c4 (50.0% score)
- …c5 (20% of these games) — Alfaro usually continues a3 (0.0% score)
As Black against 1.e4 (14 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 7 | 50.0% | 64.3% |
| e6 | 2 | 14.3% | 75.0% |
| c6 | 2 | 14.3% | 100.0% |
| d6 | 1 | 7.1% | 50.0% |
As Black against 1.d4 (11 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 9 | 81.8% | 44.4% |
| d5 | 1 | 9.1% | 100.0% |
| g6 | 1 | 9.1% | 100.0% |
William Alfaro's chess games
All 335 games by William Alfaro in the Chess.ceo database (Jul 2003 - Oct 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: 130 wins, 131 draws, 74 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| E62 | Indian Defense | 21 | 10/8/3 | 47.6% |
| D15 | Slav Defense | 20 | 9/8/3 | 45.0% |
| A59 | Benoni Defense | 14 | 7/3/4 | 50.0% |
| E62 | King's Indian Defense: Fianchetto Variation | 14 | 6/7/1 | 42.9% |
| E05 | Catalan | 10 | 4/4/2 | 40.0% |
| B07 | Queen's Pawn Game | 7 | 3/3/1 | 42.9% |
| B21 | Sicilian: Smith-Morra Gambit | 7 | 2/5/0 | 28.6% |
| A30 | Queen's Indian Defense | 7 | 1/3/3 | 14.3% |
| A13 | English Opening | 5 | 2/2/1 | 40.0% |
| A04 | Réti Opening | 5 | 1/1/3 | 20.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| A58 | Benoni Defense | 23 | 8/6/9 | 34.8% |
| B35 | Sicilian: Accelerated Dragon | 17 | 9/6/2 | 52.9% |
| B31 | Sicilian: Rossolimo | 11 | 3/4/4 | 27.3% |
| B76 | Sicilian: Dragon | 11 | 3/7/1 | 27.3% |
| A36 | English Opening: Symmetrical | 11 | 3/7/1 | 27.3% |
| A05 | Sicilian | 10 | 4/2/4 | 40.0% |
| A24 | English Opening | 9 | 2/3/4 | 22.2% |
| B15 | Modern Defense | 9 | 5/3/1 | 55.6% |
| A48 | Indian Defense | 8 | 3/2/3 | 37.5% |
| A04 | Réti Opening | 7 | 1/3/3 | 14.3% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Jan 2025 | Eelke De Boer | 2,428 | Titled Tue Early | B76 |
| Nov 2024 | Ilan Schnaider | 2,392 | Titled Tue Early | B38 |
| May 2025 | Jose Francisco R P Neves Veiga | 2,389 | Titled Tue Early | C00 |
| Dec 2011 | Hector Leyva | 2,384 | 12th Managua Hurtado Memorial | B50 |
| Nov 2008 | Bruno Laurent | 2,370 | Olympiad-38 | A31 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| ch-NCA | 2020 | 50 | 30 | 2,205 |
| Titled Tuesday | 2025 | 37 | 19.5 | 2,179 |
| chT-NCA Final | 2021 | 25 | 15.5 | 2,156 |
| ch-NCA sf | 2020 | 21 | 14 | 2,112 |
| ch-NCA final | 2022 | 12 | 9.5 | 2,348 |
| 19th American Continental | 2026 | 11 | 5.5 | 2,054 |
| Olympiad-44 | 2022 | 10 | 3 | 2,115 |
| Olympiad-43 | 2018 | 9 | 4.5 | 2,169 |
Interactive opening tree from all 335 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find William Alfaro's chess games?
335 games by William Alfaro, from Jul 2003 to Oct 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 Alfaro has played.
What does William Alfaro play on the first move as White?
Across 33 games with White in our database, William Alfaro opens with 1.d4 (70% of games), 1.Nf3 (15% of games), 1.e4 (15% of games). Against 1.e4 as Black, William Alfaro answers 1...c5 (50% of games), 1...e6 (14% of games), 1...c6 (14% of games). Against 1.d4: 1...Nf6 (82% of games), 1...d5 (9% of games), 1...g6 (9% of games).
What openings does William Alfaro play as White?
As White, William Alfaro's most-played openings in our database are: Indian Defense (21 games, 47.6% win rate); Slav Defense (20 games, 45.0% win rate); Benoni Defense (14 games, 50.0% win rate). The full breakdown of 167 games with White is in the table above.
What openings does William Alfaro play as Black?
As Black, William Alfaro most often plays: Benoni Defense (23 games, 34.8% win rate); Sicilian: Accelerated Dragon (17 games, 52.9% win rate); Sicilian: Rossolimo (11 games, 27.3% win rate). See the table above for the top ten Black openings across 168 games.
What is William Alfaro's FIDE rating?
William Alfaro is currently rated 2,056 in classical chess, 2,068 in rapid and 2,074 in blitz. Peak classical rating: 2,231 (Jan 2012).
How many games has William Alfaro played?
Our database contains 335 games by William Alfaro, covering Jul 2003 to Oct 2026. Overall record: 130 wins, 131 draws, 74 losses (38.8% win rate).
How do I prepare against William Alfaro?
335 games by William Alfaro 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.