There are different versions of Scid out there right now. The well-known Scid v.s PC/MAC, which works in the database format *.si4 and can therefore store 16,777,216 games, and Scid 5.0, released in 2023, which works in the new database format *.si5, which can now manage several billion games.
In addition to the database files, weekly update files are also provided here, which contain the new games since the release of the new database.
To unzip the files, Windows 7-Zip or another program that can handle the 7z format is required. On Mac, unpacking is possible with Keka, for example.
Caution
Using non-Latin characters (e.g. Arabic) in file paths can cause problems when unpacking archives under Windows 11. Please only use Latin characters in file paths and folder names to extract the archives.
The latest change:
07/01/2025
- Renewed deduplication of the entire OTB database using the algorithm described on the Duplicate search page. This has led to significant changes in the database, so there will be no incremental update this month.
- For this release, the data of the last month was used, which was inadvertently not adjusted to remove duplicates. You can see the statistics for the adjusted games here:
- Total games in database: 10.064.281
- Number of master games (unique): 9.561.489 –> exported games
- Number of subsumed duplicates: 4.680
- Number of exact duplicates: 364.089
- Number of textual fuzzy duplicates: 134.023
- Number of games with optimized headers: 631.747
- Number of master games with at least one player linked to a unique FIDE ID: 8.367.855
- Number of unique FIDE player IDs in master games: 223.455
- Number of games with missing result (‘*’ or ‘?’): 0
- Number of games with unknown or missing player names (White or Black): 573
- Number of games where the date was cleaned/optimized: 324.491
- Percentage of deduplicated games: 5.00%
- Average number of duplicates per master game: 0.05
- TWIC: 1596 to 1599
- Lichess Broadcast System: 06/03/2025 to 06/30/2025
- Lichess Elite Database: March, April 2025 (Online only)
Version: 2025-02-06
Contains different opening books for each ECO Code from A00 to E98 and an opening book for each group from A to E
Version: 2025-02-06
Contains different opening books for different time ranges for Scid: Games with no given Date, Games until 1899, as well as the following time ranges 1900-1949, 1950-1969, 1970-1989, 1990-1999, 2000-2004, 2005-2009, 2010-2014, 2015-2019, 2020, 2021, 2022, 2023, 2024
The file “Blitz.bin” is an opening book derived from all Blitz games out of the Lichess Elite Database.
Opening-Books for each opening according to the NIC-Codes. All files are named like the contained opening.
A list of the codes, you can find here:
Version: 2025-07-01
Lichess Elite Database: March, April 2025 added.
TWIC: 1596 -1599 added
06/03/2025
- Massive restructuring of the files.
- Separation of online and OTB games into two different databases as far as possible.
- Addition of various new sources (see front page).
05/06/2025
- TWIC 1587 to 1591 have been added.
- Games out of Lichess Broadcast System from 04/01/2025 to 05/05/2025 have been added.
04/01/2025
- TWIC 1583 to 1586 have been added.
- Games out of Lichess Broadcast System from 03/04/2025 to 03/31/2025
- Games of the Lichess Elite Database January/February 2025 have been added.
03/04/2025
- TWIC 1579 to 1582 have been added.
- Games out of Lichess Broadcast System from 02/04/2025 to 03/03/2025
- Games of the Lichess Elite Database November/December 2024 have been added.
02/04/2025
- TWIC 1575 to 1578 have been added.
- Games out of Lichess Broadcast System from 01/07/2024 to 02/03/2025
01/07/2025
- TWIC 1570 to 1574 have been added.
- Games out of Lichess Broadcast System from 12/03/2024 to 01/06/2025
12/03/2024
- TWIC 1566 to 1569 have been added.
- Games out of Lichess Broadcast System from 11/05/2024 to 12/02/2024
- Games of the Lichess Elite Database October 2024 have been added.
11/05/2024
- TWIC 1561 to 1565 have been added.
- Games out of Lichess Broadcast System from 10/01/2024 to 11/04/2024
- Games from the database of the Danish Chess Federation have been added.
- Unnecessary tags have been deleted from the entire database to save space.
10/01/2024
- TWIC 1557 to 1560 have been added.
- Games out of Lichess Broadcast System from 09/04/2024 to 09/30/2024
- Games of the Lichess Elite Database June, July and August 2024 have been added.
09/03/2024
- TWIC 1553 to 1556 have been added.
- Games out of Lichess Broadcast System from 08/06/2024 to 09/03/2024
08/06/2024
- TWIC 1548 to 1552 have been added.
- Games out of Lichess Broadcast System from 07/02/2024 to 08/05/2024
07/02/2024
- TWIC 1545, 1546 and 1547 have been added.
- Games out of Lichess Broadcast System 06/04/2024 until 07/01/2024
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