Jacek Pielach

POL · 61 yrs · K=20 · Peak 1548 (Mar 2024)

Best performance: 1566 at Ferie z szachami 2010 - grupa A(Best of 2010)

NOV26 Rating

1548

Live Rating

1548.0

Change

0.0

Games Played

How live ratings are calculated

Rating History · Classical

Loading chart…

Official classical rating by month

List	Rating	Change
Nov 2026	1548	0
Oct 2026	1548	0
Sep 2026	1548	0
Aug 2026	1548	0
Jul 2026	1548	0
Jun 2026	1548	0
May 2026	1548	0
Apr 2026	1548	0
Mar 2026	1548	0
Feb 2026	1548	0
Jan 2026	1548	0
Dec 2025	1548	0

Form · Classical

oldest → latest

From 173 classical games on record, the latest on Dec 30, 2023.

Classical games since the November list

No rated standard games this rating periodsince the NOV26 list (Nov 1, 2026)

	Last played	Score	TPR
	XXIV Ketrzynski Festiwal Szachowy - open BDec 27, 2023 – Dec 30, 2023	3/9	—

The live rating moves only when new rated games are played. Until then it matches the published rating.

Best wins · Classical

From 107 rated classical games against rated opponents, 2010–2022

#	Opponent	Rating
1,	Jan Siluk, Dec 2016 · XIX Ketrzynski Festiwal Szachowy OPEN A	, 1771
2,	Michal Nisztuk, Jan 2015 · FERIE Z SZACHAMI 2015 OPEN A	, 1743
3,	Urszula Cichocka, Feb 2010 · Ferie z szachami 2010 - grupa A	, 1618
4,	Maciej Proboszcz, Dec 2017 · XX Ketrzynski Festiwal Szachowy - OPEN "A"	, 1615
5,	Krzysztof Zawadzki, Dec 2017 · XX Ketrzynski Festiwal Szachowy - OPEN "A"	, 1555
6,	Michal Niklas, Jan 2013 · FERIE Z SZACHAMI 2013-grupa A	, 1435
7,	Szymon Gebler, Jan 2011 · Ferie z szachami 2011	, 1333
8,	Miroslaw Dejna, Feb 2010 · Ferie z szachami 2010 - grupa A	, 1290
9,	Miroslaw Dejna, Jan 2011 · Ferie z szachami 2011	, 1261
10,	Ignacy Niklas, Nov 2014 · II DEMO CUP OPEN B	, 1257

#	Opponent	Overall	Rating
1,	Miroslaw Gawronski, Highest-rated meeting: Dec 2011 · XIV Ketrzynski Festiwal Szachowy	, 0/1	, 2165
2,	Miroslaw Slawinski, Highest-rated meeting: Feb 2014 · FERIE Z SZACHAMI 2014 - OPEN A	, 0/1	, 2112
3,	Andrzej Zurkowski, Highest-rated meeting: Dec 2018 · XXI KFSz - OPEN A	, 0/1	, 2075
4,	Waldemar Jedra, Highest-rated meeting: Feb 2018 · Turniej klasyfikacyjny do oceny FIDE	, 0/1	, 2007
5,	CM Aleksander Kumala, Highest-rated meeting: Dec 2013 · XVI Ketrzynski Festiwal Szachowy - OPEN A	, 0/1	, 1984
6,	Adam Czajkowski, Highest-rated meeting: Dec 2013 · XVI Ketrzynski Festiwal Szachowy - OPEN A	, 0/1	, 1976
7,	Piotr Renkowski, Highest-rated meeting: Jan 2011 · Ferie z szachami 2011	, 0/1	, 1973
8,	Marek Aleksandrowicz, Highest-rated meeting: Dec 2012 · XV Ketrzynski Festiwal Szachowy-OPEN A	, 0/1	, 1967
9,	Michal Kanarkiewicz, Highest-rated meeting: Dec 2010 · XIII Ketrzynski Festiwal Szachowy	, 0/1	, 1902
10,	Filip Laskowski, Highest-rated meeting: Dec 2014 · XVII Ketrzynski Festiwal Szachowy OPEN A	, 0/1	, 1829

Openings · Classical

From the moves of 9 of 173 classical games on record.

As WhiteOpens 1.e4 in 4 of 4 games.

As BlackMeets 1.e4 with 1...e5.

All openings (1 as Black)

Against 1.e4: 1...e5 in 3.

Openings in Black games	Games	Score
Italian Game	3	33%

2 more games in openings played fewer than 3 times.

Event timeline · Classical

22 events

Events before the current rating period show the performance, not a rating change.

Live events show the rating change; earlier events show the performance rating.

Performance rating by year

Year	Games	Score	Avg opp	TPR
2022	5	1½	1452	1303
2018	12	1½	1514	1192
2017	12	4	1534	1409
2016	15	2½	1491	1218
2015	16	6½	1440	1375
2014	15	4½	1405	1256
2013	8	1½	1571	1320
2012	8	1	1527	1205
2011	10	2½	1644	1451
2010	6	2½	1639	1582

Games count in the month they were played. Each month and year is one performance rating over all of its rated games.

XXIV Ketrzynski Festiwal Szachowy - open B—(0)
Dec 2023Swissfederation source
Score 3/9Start 1246
Liga Warminsko-Mazurskiego Zrzeszenia LZS 2022 Round 3-71317
Nov 2022Swissfederation source
Best of 2022Score 2½/5Opp avg 1442Start 1243
Liga Warminsko-Mazurskiego Zrzeszenia LZS 2022 Round 1-2—(2)
Oct 2022Teamfederation source
Score ½/2Opp avg 1466Start 1242
XXI KFSz - OPEN A1253
Dec 2018Swissfederation source
Best of 2018Score 3½/9Opp avg 1483Start 1260
Turniej klasyfikacyjny do oceny FIDE758
Feb 2018Swissfederation source
Score 0/5Opp avg 1558Start 1291
XX Ketrzynski Festiwal Szachowy - OPEN "A"1471
Dec 2017Swissfederation source
Best of 2017Score 4/9Opp avg 1514Start 1259
I Turniej Fide-Ostroda1252
Feb 2017Swissfederation source
#2 in 2017Score ½/5Opp avg 1574Start 1263
XIX Ketrzynski Festiwal Szachowy OPEN A1246
Dec 2016Swissfederation source
Best of 2016Score 1½/8Opp avg 1497Start 1280
XIII MFSz-Open1174
Aug 2016Swissfederation source
#2 in 2016Score 2/8Opp avg 1483Start 1305
XVIII Ketrzynski Festiwal Szachowy OPEN A1291
Dec 2015Swissfederation source
#2 in 2015Score 3½/9Opp avg 1371Start 1318
FERIE Z SZACHAMI 2015 OPEN A1480
Jan 2015Swissfederation source
Best of 2015Score 3½/8Opp avg 1530Start 1315
XVII Ketrzynski Festiwal Szachowy OPEN A1206
Nov – Dec 2014Swissfederation source
#2 in 2014Score 3/9Opp avg 1479Start 1319
II DEMO CUP OPEN B1289
Nov 2014Swissfederation source
Best of 2014Score 4½/7Opp avg 1232Start 1319
FERIE Z SZACHAMI 2014 - OPEN A668
Nov 2013 – Feb 2014Swissfederation source
Score 3/9Opp avg 1468Start 1392
XVI Ketrzynski Festiwal Szachowy - OPEN A1047
Dec 2013Swissfederation source
Score 3½/9Opp avg 1847Start 1392
FERIE Z SZACHAMI 2013-grupa A1293
Dec 2012 – Jan 2013Swissfederation source
Best of 2013Score 3½/9Opp avg 1380Start 1431
XV Ketrzynski Festiwal Szachowy-OPEN A1360
Dec 2012Swissfederation source
Best of 2012Score 2½/9Opp avg 1633Start 1431
Ferie z szachami 20121157
Jan – Feb 2012Swissfederation source
#2 in 2012Score 3½/9Opp avg 1479Start 1500
XIV Ketrzynski Festiwal Szachowy1027
Dec 2011Swissfederation source
Score 4½/9Opp avg 1827Start 1500
Ferie z szachami 20111463
Jan 2011Swissfederation source
Best of 2011Score 3/8Opp avg 1565
XIII Ketrzynski Festiwal Szachowy—(2)
Dec 2010Swissfederation source
Score 4/9Opp avg 1786
Ferie z szachami 2010 - grupa A1566
Feb 2010Swissfederation source
Best of 2010Score 2½/9Opp avg 1566

Live ratings projected from the NOV26 published list · Not affiliated with FIDE