CChessStats

WE 4 Halloween chess - B

Open SwissStandard

27 players participated in this 5-round tournament, held from 31 Oct 2025 to 02 Nov 2025 in Roma, Italy. 2 federations represented. Top 10 Elo average was 1859, and top seed was Cosmas Pastore (🇮🇹 ITA, 1922).

Marco Valli (🇮🇹 ITA, 1863) won with 4.0/5, ahead of Mauro Scacco (4.0) and Giovanni Marino (3.5). Valli shared the lead from round 3, winning on tie-break.

The biggest upset came in round 5: Luigi Rotunno (1680) beat Luca Buffoni (1904), a +224-point gap.

Location
🇮🇹Roma, Italy
Dates
31 Oct 2025 → 02 Nov 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 5 rounds
Top seed
🇮🇹Cosmas Pastore1922
Avg top 10
1,859
Participants
27
Federations · 2 represented
🇮🇹Italy×26
🇩🇪Germany×1
Top 3

How it unfolded

Top 6 · 5 rounds

Tight race until R4; 2 players tied at 4.0/5, decided on Buchholz.

Co-leaders
8
2
3
1
2
1.52.545R1R2R3R4R5
Valli4Scacco4Marino3.5Pastore3.5Rotunno3.5Coppotelli3
R4–R5 · LEAD HELD

Marco Valli held the sole lead from R4 through R5 without losing it.

R5 · TIEBREAK CLUSTER

2 players finish on 4.0/5. Valli takes the title on Buchholz Cut1 (12.0).

R3–R5 · WIN STREAK

Mauro Scacco won 3 in a row (R3–R5).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Marco Valli*—
½
—
2Mauro Scacco—*——
3Giovanni Marino
½
—*—
4Cosmas Pastore———*

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1Valli, Marco1863ITA+23N=18B+4N+7B=3N4.012.012.59.752025+19.8
2Scacco, Mauro1849ITA+12B−13N+14B+6N+8B4.011.514.011.502005+19.0
3Marino, Giovanni1889ITA=6B=8N+23B+13N=1B3.512.513.08.001923+5.0
4Rotunno, Luigi1680ITA=9B+19N−1B+20N+13B3.511.513.07.501970+77.2
5Pastore, Cosmas1922ITA+20B−7N+15B=9N+16B3.511.012.58.001943+3.0
6Spinelli, Antonio1720ITA=3N+14B=11N−2B+18N3.013.015.07.751915+26.8
7Di Giuseppe, Matteo1854ITA+21N+5B=13B−1N=10N3.013.014.57.751899+6.4
8Saporito, Giulio Cong Yan1672ITA=14N=3B+22N+18B−2N3.012.013.56.501864+51.2
9Mea, Federico1836ITA=4N+24B=18N=5B=11N3.012.012.56.501855+6.4
10Marino, Alessandro Fabio1737ITA−13B=12N+26B+15N=7B3.011.011.56.001847+29.6
11Guido Guerriero, Samuele Francesco1855ITA+25B=15N=6B=16N=9B3.011.011.56.001832-5.6
12Coppotelli, Nicolo`1697ITA−2N=10B+21N=23B+19B3.010.511.05.251825+35.6
13Buffoni, Luca1904ITA+10N+2B=7N−3B−4N2.514.017.08.501802-13.4
14Scatolini, Lorenzo1832ITA=8B−6N−2N+24B+20B2.511.512.03.501731-27.6
15Marino, Fabio1782ITA+26N=11B−5N−10B+21N2.511.011.53.501772-1.2
16Baffioni, Ivano1752ITAF+25N+17B=11B−5N2.59.59.54.501914+17.0
17Alessi, Andrea1789ITA=24N=22B−16N=25B+23N2.55.05.51.751689-13.4
18Andreoli, Leonardo1789ITA+27B=1N=9B−8N−6B2.013.013.54.001678-31.2
19Giarolli, Valerio1756ITAF−4B+27N+22B−12N2.08.58.52.001659-21.2
20Tasciotti, Leonardo1745ITA−5N=21B+24N−4B−14N1.511.011.51.251613-35.6
21Pizzala, Luca1707ITA−7B=20N−12B+26N−15B1.510.010.51.251594-31.2
22Compagna, Caterina1588ITAF=17N−8B−19N+25N1.58.08.01.751645+8.4
23Moretti, Lorenzo1715ITA−1BF−3N=12N−17B0.513.013.01.501488-40.0
24Leotta, Salvatore1670ITA=17B−9N−20B−14NF0.59.59.51.251479-32.0
25Fasanella, Vito1710ITA−11N−16BF=17N−22B0.59.59.51.251428-51.6
26Khalilzadeh, Rassul1637GER−15BF−10N−21B=27N0.57.57.50.251400-20.8
27Toso, Alberto1660ITA−18NF−19BF=26B0.54.54.50.251455-28.8

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets