Philippine National Youth and Schools Chess Championship U13 Girls

Open SwissStandard

21 players participated in this 6-round tournament, held from 20 Mar 2026 to 22 Mar 2026 in Dumaguete City, Negros Oriental, Philippines. Top 10 Elo average was 1359, and top seed was Maddison Faith Maghari (🇵🇭 PHI, 1612).

Mary Janelle Tan (🇵🇭 PHI, 1548) won with 5.5/6, ahead of Maddison Faith Maghari (4.0) and Elle Castronuevo (4.0). Tan won solo starting round 3.

Location

🇵🇭Dumaguete City, Negros Oriental, Philippines

Dates

20 Mar 2026 → 22 Mar 2026

Time control

Standard: 60 minutes with 30 seconds increment from move 1

System

Swiss · 6 rounds

Top seed

🇵🇭Maddison Faith Maghari1612

Avg top 10

1,359

Participants

Federations · 1 represented

🇵🇭Philippines×14

Top 3

🥇
Mary Janelle Tan
🇵🇭PHI·1548
5.5pts·1788perf+32.8
🥈
Maddison Faith Maghari
🇵🇭PHI·1612
4.0pts·1578perf-8.4
🥉
Elle Castronuevo
🇵🇭PHI·1501
4.0pts·1527perf+5.6

How it unfolded

Top 6 · 6 rounds

Mary Janelle Tan led from R3; +1.5-point edge over the runner-up.

Co-leaders

Tan5.5Maghari4Castronuevo4Valencia4Ledesma4Regidor3.5

R3–R6 · LEAD HELD

Mary Janelle Tan never relinquished the lead after R3; final gap +1.5 over the runner-up.

R6 · HEAD-TO-HEAD · WINNER VS 2ND

Mary Janelle Tan drew with Maddison Faith Maghari (Black).

R1–R5 · WIN STREAK

Mary Janelle Tan won 5 in a row (R1–R5).

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Mary Janelle Tan	*	½	1	1
2Maddison Faith Maghari	½	*	½	½
3Elle Castronuevo	0	½	*	—
4Channell Joy Valencia	0	½	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	Pts	Bu C1	Bu	SB	Perf	Δ
1	Tan, Mary Janelle	1548	PHI	+11B	+5N	+3B	+6N	+9B	=2N	5.5	18.5	21.5	19.50	1788	+32.8
2	Maghari, Maddison Faith	1612	PHI	+14B	=10N	+7B	=3N	=5B	=1B	4.0	20.0	22.5	14.25	1578	-8.4
3	Castronuevo, Elle	1501	PHI	+18N	+13B	−1N	=2B	=4N	+8B	4.0	19.0	20.0	10.50	1527	+5.6
4	Ledesma, Janua Uelel	1408	PHI	+21B	−8N	+15B	=7N	=3B	+9N	4.0	16.0	16.0	9.25	1412	+0.8
5	Valencia, Channell Joy	1432	PHI	+20N	−1B	+21N	+8B	=2N	=6B	4.0	16.0	16.0	6.75	1566	+21.6
6	Regidor, Loraine Belle	0	PHI	F	+16B	+8N	−1B	+13N	=5N	3.5	17.0	17.0	9.50	1531	0.0
7	Lo, Charlie Anne	1581	PHI	=12N	+19B	−2N	=4B	=10N	+13B	3.5	16.5	17.5	8.50	1367	-34.4
8	Castronuevo, Deandra	1528	PHI	+17N	+4B	−6B	−5N	+11B	−3N	3.0	18.5	20.5	9.00	1322	-33.2
9	FIDE 5290830	0	—	−10N	+17B	+12N	+16B	−1N	−4B	3.0	17.5	19.5	7.00	1294	0.0
10	Genoso, Cassandra Faith	1456	PHI	+9B	=2B	−16N	=11N	=7B	=12B	3.0	16.5	18.5	9.75	1448	-0.8
11	FIDE 521086338	0	—	−1N	+18B	=13N	=10B	−8N	+20B	3.0	15.0	15.0	3.75	1241	0.0
12	Cateyo, Chen	0	PHI	=7B	=14N	−9B	+20N	=15B	=10N	3.0	14.5	14.5	5.75	1519	0.0
13	Pamplona, Erica	0	PHI	+19B	−3N	=11B	+14N	−6B	−7N	2.5	16.5	17.5	5.00	741	0.0
14	FIDE 521086320	0	—	−2N	=12B	+17N	−13B	F	+15N	2.5	14.0	16.0	6.00	812	0.0
15	FIDE 521007233	0	—	−16N	+20B	−4N	+21B	=12N	−14B	2.5	11.5	11.5	1.50	666	0.0
16	Elopre, Angelic Payne	1525	PHI	+15B	−6N	+10B	−9N	F	−17B	2.0	14.5	16.5	5.50	2256	+16.0
17	Davad, Shayne Arielle	0	PHI	−8B	−9N	−14B	F	+21N	+16N	2.0	11.5	11.5	2.00	1527	0.0
18	FIDE 521086346	0	—	−3B	−11N	F	F	F	+21B	1.0	9.0	9.0	0.00	701	0.0
19	FIDE 5284430	0	—	−13N	−7N	F	F	+20B	F	1.0	6.0	6.0	0.00	781	0.0
20	FIDE 521080194	0	—	−5B	−15N	F	−12B	−19N	−11N	0.0	13.5	14.5	0.00	632	0.0
21	Gonzales, Katneiss Mary	0	PHI	−4N	F	−5B	−15N	−17B	−18N	0.0	13.5	13.5	0.00	620	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Tan, Mary JanellePHI
+32.8
5.5 pts · #2
2Valencia, Channell JoyPHI
+21.6
4.0 pts · #5
3Elopre, Angelic PaynePHI
+16.0
2.0 pts · #9

Top rating losers

1Lo, Charlie AnnePHI
-34.4
3.5 pts · #7
2Castronuevo, DeandraPHI
-33.2
3.0 pts · #11
3Maghari, Maddison FaithPHI
-8.4
4.0 pts · #1