WinChloe is a software
devoted to chess problems written by Christian
Poisson.
Since version 2.00, WinChloe has a bilingual
interface : French and English
Main features:
- Database
- More than 960 000 problems recorded in the main database "Echecs"
- 11 reference tables: authors (more than 23 000), sources, themes, conditions ...etc.
An Internet connection is needed to update these tables.
- Possibility to record chessboards from 1×1 to 250×250.
- Formatted solution.
- Queries.
- Edition
- each record, i.e. each problem, including
diagram (using "1Echecs" font), author(s) name,
source, solution, themes... can be recorded in a RTF file. Several problems can be recorded at the same time.
- Solving
- a new solving program which knows :
- 20 stipulations (direct, help, self ...).
Since version 3.09 : solving of orthodox
direct and selfmates is much faster. Also,
it is multithreaded and can use an external
64-bits engine.
For instance, on Intel(R) Core(TM) i7-14700 CPU 2.10GHz with 64 GB memory, Windows 11 64-bits, using 24 threads out of 28:
the following ≠8 is solved (key + variations with threats) in 1 s.
Olivier SCHMITT, diagrammes 2009

‡8 |
the following ≠11 is solved (key + variations with threats) in 3 minutes 07 s.
Volker ZIPF, Problemschach 2009

‡11 |
the following s≠9 is solved (key + variations) in 4 minutes 56 s.
Udo DEGENER, Ceskoslovensky Šach
2006

s‡9 |
the following s=10 is solved (key + variations) in 5 s.
Daniel PERONE, Ideal-Mate Review
2012

s=10 |
- more than 160 aims (mate, stalemate,
capture, ideal mate, model pin mate ...)
- more than 1300 fairy pieces
- more than 1100 fairy conditions, on any
(normal, cylinder or anchor-ring) board from
1×1 to 250×250.
- and which is able to recognize a lot of themes
- It is also possible to use the old "Chloe"
programs (on 32-bits system), and Pascal Wassong's
"Natch" for proof games.
- Since version 3.05 : it is possible to solve
studies if the corresponding Nalimov tablebases
are installed.
- Miscellaneous
- "Redaction mode": you play the moves on the
diagram and they are automatically written in the
solution.
- If you select a move in the solution, the
corresponding position appears on the board.
- It is possible to analyze orthodox studies or
moremovers using a UCI engine (Houdini, Critter,
Stockfish, Fruit, Rybka, Naum ...)
- Some tutorials are
available.
- Statistics : number of problems by author,
source, year ...
- Possibility to save the diagram in PNG, BMP,
GIF or JPEG format.
- Possibility to regularly update the database
"Echecs" (~ once a month).
- Possibility to freely download new
versions of WinChloe.
- ...
WinChloe requires :
- Windows 7, 8, 10 or 11.
- Internet connection.
- 1 GB disk space.
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