IRT "Memorial Prof. Mario Rafael Solis"
15 players participated in this 7-round tournament, held from 17 Oct 2025 to 26 Oct 2025 in Cochabamba, Bolivia. 1 titled players. Top 10 Elo average was 1808, and top seed was Boris Ferrufino (🇧🇴 BOL, CM, 2000).
Miguel Angel Castillo Yujra (🇧🇴 BOL, 1873) won with 6.0/7, ahead of Gabriel Chipana (5.5) and Fabricio Edwin Mercado Diaz (5.0). Castillo Yujra shared the lead from round 5 and broke clear in the final round.
The biggest upset came in round 6: Dominic Giselle Rosas Navarro (1558) beat Mauricio Tapia (1853), a +295-point gap.
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How it unfolded
Top 6 · 7 roundsMiguel Angel Castillo Yujra led from R7; +0.5-point edge over the runner-up.
Miguel Angel Castillo Yujra takes the sole lead (6.0/7).
Miguel Angel Castillo Yujra beat Gabriel Chipana (Black).
Miguel Angel Castillo Yujra 3 wins (R5–R7)Gabriel Chipana 4 wins (R1–R4)Fabricio Edwin Mercado Diaz 3 wins (R3–R5)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Miguel Angel Castillo Yujra | * | 1 | 1 | 1 |
| 2Gabriel Chipana | 0 | * | 1 | 1 |
| 3Fabricio Edwin Mercado Diaz | 0 | 0 | * | 1 |
| 4CMBoris Ferrufino | 0 | 0 | 0 | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Castillo Yujra, Miguel Angel | 1873 | BOL | +11N | =7B | +6N | =12B | +2N | +3B | +4N | 6.0 | 21.0 | 22.5 | 20.50 | 2120 | +39.8 |
| 2 | Chipana, Gabriel | 1952 | BOL | +5B | +3N | +4B | +9N | −1B | +8N | =6B | 5.5 | 23.5 | 25.5 | 18.00 | 1991 | +8.0 |
| 3 | Mercado Diaz, Fabricio Edwin | 1733 | BOL | +14N | −2B | +10N | +6B | +4N | −1N | +9B | 5.0 | 22.0 | 22.5 | 11.00 | 1933 | +62.0 |
| 4 | Ferrufino, BorisCM | 2000 | BOL | =6N | +15B | −2N | +7B | −3B | +11N | −1B | 3.5 | 23.5 | 23.5 | 5.50 | 1733 | -40.2 |
| 5 | Rosas Navarro, Dominic Giselle | 1558 | BOL | −2N | +14B | −12N | =13B | F | +7B | +8N | 3.5 | 15.0 | 15.5 | 6.00 | 1789 | +50.0 |
| 6 | Rosas Navarro, Bruno Shahid | 1730 | BOL | =4B | +8N | −1B | −3N | F | +9B | =2N | 3.0 | 24.5 | 24.5 | 9.00 | 1830 | +29.6 |
| 7 | Tapia, Mauricio | 1853 | BOL | +13B | =1N | −9B | −4N | −8B | −5N | +15B | 2.5 | 18.5 | 18.5 | 4.00 | 1533 | -47.8 |
| 8 | Rodriguez Barrientos, Johan Raziel | 1767 | BOL | F | −6B | =13N | +10B | +7N | −2B | −5B | 2.5 | 17.5 | 17.5 | 5.00 | 1649 | -38.0 |
| 9 | Mirabal, Yojan | 1650 | BOL | F | +11B | +7N | −2B | F | −6N | −3N | 2.0 | 19.0 | 19.0 | 4.00 | 1687 | +3.2 |
| 10 | Rodriguez Rodriguez, Javier Ramiro | 1633 | BOL | F | F | −3B | −8N | F | +14N | +11B | 2.0 | 13.0 | 13.0 | 2.00 | 1551 | -7.0 |
| 11 | Romay Rocha, Diego Marcelo | 1528 | BOL | −1B | −9N | +15N | =14B | F | −4B | −10N | 1.5 | 15.0 | 15.0 | 0.25 | 974 | -34.8 |
| 12 | Tapia Espada, Antonio Enrique | 1884 | BOL | F | F | +5B | =1N | F | F | F | 1.5 | 11.5 | 11.5 | 6.50 | 1916 | +2.6 |
| 13 | Omonte Uno, Cristhian | 1489 | BOL | −7N | F | =8B | =5N | F | F | F | 1.0 | 10.5 | 10.5 | 3.00 | 1606 | +14.0 |
| 14 | Sansuste Mogro, Reyner Santiago | 0 | BOL | −3B | −5N | F | =11N | F | −10B | F | 0.5 | 13.0 | 13.0 | 0.75 | 1297 | 0.0 |
| 15 | Escobar Sejas, Jhojan | 0 | BOL | F | −4N | −11B | F | F | F | −7N | 0.0 | 10.5 | 10.5 | 0.00 | 993 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Mercado Diaz, Fabricio EdwinBOL+62.05.0 pts · #3
- 2Rosas Navarro, Dominic GiselleBOL+50.03.5 pts · #7
- 3Castillo Yujra, Miguel AngelBOL+39.86.0 pts · #1
- 1Tapia, MauricioBOL-47.82.5 pts · #9
- 2Ferrufino, BorisCMBOL-40.23.5 pts · #6
- 3Rodriguez Barrientos, Johan RazielBOL-38.02.5 pts · #5
- R6+295 Elo gap
- R5+267 Elo gap
- R7+209 Elo gap