Torneo de Ajedrez "The Grinch" 2025

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34 players participated in this 6-round tournament, held from 13 Dec 2025 to 14 Dec 2025 in Chiriqui, Panama. Top 10 Elo average was 1603, and top seed was Jose Antonio Delgado Rosas (🇵🇦 PAN, 2000).

Jose Antonio Delgado Rosas (🇵🇦 PAN, 2000) won with 6.0/6, ahead of Luis Onesimo Alaniz Foyo (4.5) and Jenner Antonio Pineda Aguirre (4.5). Delgado Rosas won solo starting round 4.

The biggest upset came in round 6: Dayana Cristel Montezuma Camarena (1512) beat Dastan Aaron Pitti Torres (1664), a +152-point gap.

Location

🇵🇦Chiriqui, Panama

Dates

13 Dec 2025 → 14 Dec 2025

Time control

Standard: 60 minutes with 30 seconds increment from move 1

System

Swiss · 6 rounds

Top seed

🇵🇦Jose Antonio Delgado Rosas2000

Avg top 10

1,603

Participants

Federations · 1 represented

🇵🇦Panama×25

Top 3

🥇
Jose Antonio Delgado Rosas
🇵🇦PAN·2000
6.0pts·2455perf+12.6
🥈
Luis Onesimo Alaniz Foyo
🇵🇦PAN·1822
4.5pts·1726perf-12.8
🥉
Jenner Antonio Pineda Aguirre
🇵🇦PAN·1524
4.5pts·1732perf+30.4

How it unfolded

Top 6 · 6 rounds

Jose Antonio Delgado Rosas led from R4; +1.5-point edge over the runner-up.

Co-leaders

Delgado Rosas6Alaniz Foyo4.5Pineda Aguirre4.5Ramos Ceballos4.5Chong Zeng4De Las Casas Saenz4

R4–R6 · LEAD HELD

Jose Antonio Delgado Rosas never relinquished the lead after R4; final gap +1.5 over the runner-up.

R4 · HEAD-TO-HEAD · WINNER VS 2ND

Jose Antonio Delgado Rosas beat Luis Onesimo Alaniz Foyo (White).

WIN STREAKS · 2 top finishers

Jose Antonio Delgado Rosas 6 wins (R1–R6)Luis Onesimo Alaniz Foyo 3 wins (R1–R3)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Jose Antonio Delgado Rosas	*	1	1	—
2Luis Onesimo Alaniz Foyo	0	*	½	1
3Jenner Antonio Pineda Aguirre	0	½	*	—
4Jose Andres Ramos Ceballos	—	0	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	Pts	Bu C1	Bu	SB	Perf	Δ
1	Delgado Rosas, Jose Antonio	2000	PAN	+20N	+9B	+3N	+2B	+10N	+5B	6.0	20.5	23.0	23.00	2455	+12.6
2	Alaniz Foyo, Luis Onesimo	1822	PAN	+29B	+23N	+6B	−1N	+4B	=3N	4.5	21.0	22.5	14.25	1726	-12.8
3	Pineda Aguirre, Jenner Antonio	1524	PAN	+32B	+15N	−1B	+16N	+6B	=2B	4.5	20.5	21.5	13.25	1732	+30.4
4	Ramos Ceballos, Jose Andres	1465	PAN	+22N	+24B	=5N	+21B	−2N	+11B	4.5	17.0	19.0	12.50	1603	+18.8
5	De Las Casas Saenz, Diego Alejandro	1552	PAN	+30B	+28N	=4B	=10N	+8B	−1N	4.0	20.0	21.5	11.50	1666	+38.4
6	Sheffer Ledesma, Aldair Thomas	1494	PAN	+14B	+16N	−2N	+7B	−3N	+15B	4.0	19.5	22.5	13.50	859	-23.2
7	Chong Zeng, Jorge Andy	0	PAN	+8B	−10N	+12B	−6N	+23B	+17N	4.0	18.0	20.0	12.50	1536	0.0
8	Montezuma Camarena, Dayana Cristel	1512	PAN	−7N	+17B	+29N	+18B	−5N	+10B	4.0	17.5	19.0	11.00	1663	+23.6
9	Shayegan Fernandez, Yeisie Behroo	1460	PAN	+31B	−1N	−15B	+20B	+18N	+16N	4.0	17.5	18.5	9.50	1060	-1.6
10	Pitti Torres, Dastan Aaron	1664	PAN	+26N	+7B	+11N	=5B	−1B	−8N	3.5	21.5	23.5	11.50	1400	-41.2
11	Franceschi Urbaez, Ricardo Martin	0	PAN	+12B	+21N	−10B	+23N	=17B	−4N	3.5	17.0	19.0	9.50	1508	0.0
12	Hidalgo Rodriguez, Sebastian Antonio	1435	PAN	−11N	+19B	−7N	+27B	+25N	=13B	3.5	16.0	18.0	8.75	1441	+0.8
13	De Leon Aparicio, Keydanis Mariam	1441	PAN	−15B	+33N	−16B	+19N	+30B	=12N	3.5	14.0	14.5	6.75	1429	-0.8
14	FIDE 6636276	0	—	−6N	=20B	−17N	+33B	+29N	+22N	3.5	13.5	14.0	5.75	660	0.0
15	Foote, Andrew Aaron	0	PAN	+13N	−3B	+9N	−17B	+21N	−6N	3.0	19.0	21.5	10.00	1466	0.0
16	Munoz Santos, Anthony Abdiel	0	PAN	+18N	−6B	+13N	−3B	+20N	−9B	3.0	19.0	21.5	9.00	1276	0.0
17	Valdes Gonzalez, Abinadab Ernesto	1429	PAN	=33B	−8N	+14B	+15N	=11N	−7B	3.0	18.0	18.5	8.50	713	-16.0
18	Ramos Ceballos, Gabriel Andres	1410	PAN	−16B	+32N	+31B	−8N	−9B	+24N	3.0	14.0	15.0	4.00	687	0.0
19	FIDE 6637850	0	—	−21B	−12N	+34B	−13B	+26N	+23N	3.0	13.5	13.5	4.00	1257	0.0
20	Ayala Barraza, Sofia Isabela	0	PAN	−1B	=14N	+33B	−9N	−16B	+29B	2.5	18.0	18.5	3.75	929	0.0
21	De Leon Aparicio, Keydan Harim	1536	PAN	+19N	−11B	+25N	−4N	−15B	=30B	2.5	16.0	17.5	5.75	666	-20.8
22	De Gracia Mora, Jeremy Yishaq	0	PAN	−4B	−25N	+26N	=29B	+32N	−14B	2.5	13.5	14.5	3.75	666	0.0
23	Hidalgo Rodriguez, Pablo Andres	1452	PAN	+27N	−2B	+30N	−11B	−7N	−19B	2.0	17.0	18.5	3.50	1022	-4.0
24	FIDE 6623905	0	—	+25B	−4N	−28B	−30N	+33N	−18B	2.0	13.0	13.5	2.50	644	0.0
25	Ayala Barraza, Ericka Somary	0	PAN	−24N	+22B	−21B	+31N	−12B	−27N	2.0	12.5	13.5	3.50	655	0.0
26	FIDE 6637841	0	—	−10B	−31N	−22B	+34N	−19B	+33N	2.0	10.5	10.5	0.50	863	0.0
27	FIDE 6631002	0	—	−23B	−29N	+32B	−12N	F	+25B	2.0	10.0	11.0	3.00	639	0.0
28	Morales Aguirre, Javier Antonio	1424	PAN	+34N	−5B	+24N	F	F	F	2.0	6.0	6.0	2.00	708	-15.2
29	FIDE 6638724	0	—	−2N	+27B	−8B	=22N	−14B	−20N	1.5	17.0	19.0	3.25	868	0.0
30	Castillo Castillo, Julia Julieth	0	PAN	−5N	F	−23B	+24B	−13N	=21N	1.5	14.0	14.0	3.25	1147	0.0
31	Duarte Gonzalez, Edgar Said	0	PAN	−9N	+26B	−18N	−25B	F	F	1.0	13.0	13.0	2.00	660	0.0
32	FIDE 6637868	0	—	−3N	−18B	−27N	F	−22B	+34B	1.0	12.0	12.0	0.00	696	0.0
33	FIDE 6625177	0	—	=17N	−13B	−20N	−14N	−24B	−26B	0.5	14.5	16.5	1.50	1249	0.0
34	FIDE 6629466	0	—	−28B	F	−19N	−26B	F	−32N	0.0	9.5	9.5	0.00	621	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1De Las Casas Saenz, Diego AlejandroPAN
+38.4
4.0 pts · #6
2Pineda Aguirre, Jenner AntonioPAN
+30.4
4.5 pts · #8
3Montezuma Camarena, Dayana CristelPAN
+23.6
4.0 pts · #7

Top rating losers

1Pitti Torres, Dastan AaronPAN
-41.2
3.5 pts · #13
2Sheffer Ledesma, Aldair ThomasPAN
-23.2
4.0 pts · #17
3De Leon Aparicio, Keydan HarimPAN
-20.8
2.5 pts · #32

Biggest upsets

R6+152 Elo gap
Montezuma Camarena, Dayana Cristel1512 beat Pitti Torres, Dastan Aaron1664