Aruba Chess Challenge 2025 Open
Open SwissStandard
40 players participated in this 7-round tournament, held from 09 Oct 2025 to 12 Oct 2025 in Oranjestad, Aruba. 14 titled players from 8 federations. Top 10 Elo average was 2119, and top seed was Roberto Carlos Sanchez Alvarez (🇵🇦 PAN, IM, 2360).
Roberto Carlos Sanchez Alvarez (🇵🇦 PAN, IM, 2360) won with 6.0/7, ahead of Jasel Lopez (6.0) and Juan Pablo De Mey (5.0). Sanchez Alvarez shared the lead from round 1, winning on tie-break.
The biggest upset came in round 5: Lesley Cielo (1543) beat Edler Castro de (1923), a +380-point gap.
Location
🇦🇼Oranjestad, Aruba
Dates
09 Oct 2025 → 12 Oct 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 7 rounds
Titled players · 14
IM×2
FM×4
CM×6
WCM×2
Federations · 8 represented
🇦🇼Aruba×19
Netherlands Antilles×11
🇵🇷Puerto Rico×2
🇵🇦Panama×2
🇰🇾Cayman Islands×1
🇨🇺Cuba×1
🇳🇱Netherlands×1
🇻🇪Venezuela×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 7 roundsTight race until R7; 2 players tied at 6.0/7, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 2 at the finish.
Co-leaders
16
5
1
2
4
2
2
R7 · TIEBREAK CLUSTER
2 players finish on 6.0/7. Sanchez Alvarez takes the title on Buchholz Cut1 (28.5).
R4 · HEAD-TO-HEAD · WINNER VS 2ND
IM Jasel Lopez drew with IM Roberto Carlos Sanchez Alvarez (White).
WIN STREAKS · 2 top finishers
IM Jasel Lopez 3 wins (R5–R7)IM Roberto Carlos Sanchez Alvarez 3 wins (R1–R3)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1IMJasel Lopez | * | ½ | 1 | — |
| 2IMRoberto Carlos Sanchez Alvarez | ½ | * | ½ | 1 |
| 3FMJuan Pablo De Mey | 0 | ½ | * | ½ |
| 4FMUrsus Van Bemmelen | — | 0 | ½ | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Sanchez Alvarez, Roberto CarlosIM | 2360 | PAN | +6B | +30N | +16B | =2N | =3B | +4N | +5B | 6.0 | 28.5 | 31.0 | 25.50 | 2409 | +4.2 |
| 2 | Lopez, JaselIM | 2344 | ARU | +22N | +13B | =5N | =1B | +16N | +3B | +7N | 6.0 | 27.5 | 31.0 | 25.75 | 2401 | +4.8 |
| 3 | De Mey, Juan PabloFM | 2076 | ARU | +28B | +25N | =4B | +5B | =1N | −2N | +15B | 5.0 | 28.5 | 31.5 | 20.00 | 2204 | +26.4 |
| 4 | Van Bemmelen, UrsusFM | 2087 | AHO | =9N | +36B | =3N | +11B | +6N | −1B | +12N | 5.0 | 27.5 | 28.5 | 18.00 | 2039 | -1.8 |
| 5 | Almedina Ortiz, Edgardo J.FM | 2210 | PUR | +23B | +10N | =2B | −3N | +17B | +25N | −1N | 4.5 | 28.0 | 31.0 | 17.00 | 2111 | -9.0 |
| 6 | Shaw, CliffordCM | 1749 | CAY | −1N | +24B | +13N | +20B | −4B | =8N | +18B | 4.5 | 26.5 | 30.0 | 16.75 | 2053 | +52.8 |
| 7 | Smeets, Christiaan | 2048 | NED | +33B | =17N | +26B | −16N | +18B | +9N | −2B | 4.5 | 23.5 | 25.5 | 14.25 | 1979 | -15.2 |
| 8 | Rivero Gonzalez, Carlos | 2044 | CUB | +37N | =11B | =9N | =25B | =19N | =6B | +17N | 4.5 | 22.5 | 23.5 | 14.00 | 1834 | -30.0 |
| 9 | Dirks, Ayden | 1714 | ARU | =4B | +18N | =8B | =10N | +20B | −7B | =14N | 4.0 | 25.5 | 29.0 | 15.75 | 2005 | +50.0 |
| 10 | Croes, OctavioCM | 1853 | ARU | +19N | −5B | +22N | =9B | −25N | +21B | =11B | 4.0 | 23.0 | 26.0 | 14.50 | 1812 | -8.2 |
| 11 | Villalba Martinez, Paul Andres | 1768 | ARU | +32B | =8N | =30B | −4N | +36B | =14B | =10N | 4.0 | 22.5 | 23.5 | 11.00 | 1882 | +34.0 |
| 12 | Bregita, Jhonathan | 1814 | AHO | −27B | =31N | +38B | =26N | +29B | +19N | −4B | 4.0 | 20.0 | 20.5 | 9.75 | 1725 | -14.4 |
| 13 | Capella, RurikFM | 1912 | AHO | +35B | −2N | −6B | =33N | +38N | +26B | =25B | 4.0 | 20.0 | 20.5 | 7.50 | 1823 | -15.6 |
| 14 | Pesqueira, JoseCM | 1832 | ARU | +39B | −16N | =29B | =17N | +33B | =11N | =9B | 4.0 | 20.0 | 20.0 | 9.25 | 1800 | -5.2 |
| 15 | Franken, Angelo | 1799 | ARU | =38B | =27N | =33B | =29N | +31B | +16B | −3N | 4.0 | 19.0 | 19.5 | 10.25 | 1841 | +6.6 |
| 16 | Ortiz Monsalve, Sebastian | 2061 | COL | +29N | +14B | −1N | +7B | −2B | −15N | =23B | 3.5 | 28.0 | 31.0 | 13.25 | 1973 | -28.4 |
| 17 | Bedi, VaibhavCM | 1769 | AHO | +21N | =7B | =20N | =14B | −5N | +24B | −8B | 3.5 | 24.5 | 28.0 | 13.00 | 1898 | +20.0 |
| 18 | Chaudron, Frederik Theodoor | 1827 | ARU | =36N | −9B | +21N | +27B | −7N | +28B | −6N | 3.5 | 22.5 | 23.5 | 10.00 | 1663 | -52.4 |
| 19 | Croes, Jesus David | 1619 | ARU | −10B | =23N | +37B | +30N | =8B | −12B | =26N | 3.5 | 21.5 | 22.5 | 9.00 | 1824 | +69.2 |
| 20 | Maduro, ShermanCM | 1996 | AHO | +31B | =26N | =17B | −6N | −9N | +36B | =22N | 3.5 | 21.0 | 22.0 | 8.50 | 1712 | -47.0 |
| 21 | Goedhart, Christiaan N. | 0 | ARU | −17B | +28N | −18B | +23N | =26B | −10N | +30N | 3.5 | 20.5 | 23.0 | 10.50 | 1796 | 0.0 |
| 22 | Capella, Gregory | 1750 | AHO | −2B | +35N | −10B | F | +39N | +27N | =20B | 3.5 | 19.0 | 19.0 | 6.25 | 1850 | +14.4 |
| 23 | Jacobs, AnnelaineWCM | 1739 | ARU | −5N | =19B | =36N | −21B | +37N | +33B | =16N | 3.5 | 18.0 | 19.0 | 7.00 | 1844 | +14.2 |
| 24 | Leal Alvarez, Jose Alberto | 1641 | ARU | −30B | −6N | +39B | =32N | +35B | −17N | +33N | 3.5 | 16.5 | 16.5 | 4.75 | 1722 | +24.4 |
| 25 | Carrillo, Jose Antonio | 1810 | PAN | F | −3B | +32N | =8N | +10B | −5B | =13N | 3.0 | 24.5 | 24.5 | 10.75 | 1947 | +14.6 |
| 26 | Tromp, Hubert Randolf | 1752 | ARU | +40N | =20B | −7N | =12B | =21N | −13N | =19B | 3.0 | 23.0 | 23.0 | 7.25 | 1729 | -4.6 |
| 27 | Cielo, Lesley | 1543 | ARU | +12N | =15B | −34N | −18N | +30B | −22B | =28N | 3.0 | 20.5 | 22.5 | 10.00 | 1774 | +72.0 |
| 28 | Pop, Serapio | 1710 | AHO | −3N | −21B | +31B | =35N | +32B | −18N | =27B | 3.0 | 20.0 | 21.5 | 7.25 | 1676 | -13.2 |
| 29 | Viafara, Hernan | 1690 | ARU | −16B | +39N | =14N | =15B | −12N | −30B | +36N | 3.0 | 19.0 | 19.0 | 5.00 | 1744 | +14.8 |
| 30 | Castro de, Edler | 1923 | AHO | +24N | −1B | =11N | −19B | −27N | +29N | −21B | 2.5 | 23.5 | 26.5 | 8.50 | 1707 | -67.6 |
| 31 | Pieter, LianaWCM | 1661 | AHO | −20N | =12B | −28N | +37B | −15N | +38B | −32N | 2.5 | 18.0 | 18.5 | 3.50 | 1649 | -5.2 |
| 32 | Loyo Morillo, Haydee Graciela | 0 | VEN | −11N | F | −25B | =24B | −28N | +35N | +31B | 2.5 | 17.5 | 17.5 | 5.75 | 1647 | 0.0 |
| 33 | Moreno Mora, Milaydes Lourdes | 1674 | ARU | −7N | +40B | =15N | =13B | −14N | −23N | −24B | 2.0 | 23.5 | 23.5 | 4.00 | 1556 | -17.6 |
| 34 | Izijk, JimmyCM | 1965 | AHO | F | +38N | +27B | F | F | F | F | 2.0 | 3.5 | 3.5 | 3.50 | 2365 | +1.6 |
| 35 | Lozano Hernandez, Brian | 1637 | PUR | −13N | −22B | +40N | =28B | −24N | −32B | F | 1.5 | 16.5 | 16.5 | 1.50 | 1431 | -36.4 |
| 36 | Mendoza Chourio, Wignifer Y. | 1555 | ARU | =18B | −4N | =23B | F | −11N | −20N | −29B | 1.0 | 23.0 | 26.0 | 3.50 | 1549 | -5.6 |
| 37 | Essed, Mizpa Ricardo | 1671 | ARU | −8B | F | −19N | −31N | −23B | F | +38N | 1.0 | 14.5 | 14.5 | 0.50 | 965 | -64.0 |
| 38 | Abdul Hamid, Durayd E. | 0 | ARU | =15N | −34B | −12N | F | −13B | −31N | −37B | 0.5 | 17.5 | 17.5 | 2.00 | 1402 | 0.0 |
| 39 | Berkenveld, Paulus | 1577 | AHO | −14N | −29B | −24N | F | −22B | F | F | 0.0 | 14.0 | 14.0 | 0.00 | 928 | -24.4 |
| 40 | FIDE 15902129 | 0 | — | −26B | −33N | −35B | F | F | F | F | 0.0 | 7.0 | 7.0 | 0.00 | 888 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Cielo, LesleyARU+72.03.0 pts · #24
- 2Croes, Jesus DavidARU+69.23.5 pts · #16
- 3Shaw, CliffordCMCAY+52.84.5 pts · #8
Top rating losers
- 1Castro de, EdlerAHO-67.62.5 pts · #28
- 2Essed, Mizpa RicardoARU-64.01.0 pts · #40
- 3Chaudron, Frederik TheodoorARU-52.43.5 pts · #27
Biggest upsets
- R5+380 Elo gap
- R4+304 Elo gap
- R5+282 Elo gap