Sjeng is probably a bit weaker in bughouse than it is in crazyhouse. Most Sjeng's on the FICS have a rating of about 2000 points in bughouse, with a top of over 2200 points.
For standard chess, Sjeng's rating is probably about 2450 ELO. In suicide
and losers chess Sjeng beats all but the very best humans, and will beat
non-specialized programs easily.
For standard chess a 486 with minimal RAM is good enough. (The very latest versions are a bit more demading in terms of RAM, i.e. >=16Mb)
On an AMD Athlon XP 1800, Sjeng can currently search about 200.000-1.200.000 moves per second, depending on the variant, settings and position.
Both WinBoard protocol 1 and 2 are supported. A lot of chess software supports WinBoard engines like Sjeng.
Zon Juan Jan has written free Windows interfaces for Sjeng, complete
with easy-to-use installers. These allow you to play crazyhouse and suicide/givaway
against Sjeng without having to set up Sjeng and WinBoard. They are available
in the download area
Screenshots are here .
From version 12.10 on, the Universal Chess Interface (UCI) is also supported. This means that you can use Sjeng directly under Fritz 7 or newer, Shredder, ChessPartner (or Rebel Tiger), ChessAssistant and loads of other interfaces.
People that want to let Sjeng play on a chess server, please read these notes.
6. What are bughouse, crazyhouse, suicide, giveaway and losers ?
Bughouse is a form of chess which is played with 2 teams, each consisting of 2 players. Each player plays his opponent on a seperate board. If a piece is captured, the capturing player can pass it on to his partner, who can then drop the piece into his game and use it.7. Who wrote Sjeng ?
If you have never played bughouse before, you are really missing out on something. Try it, you'll like it.
Crazyhouse is identical to bughouse, but for 2 players and one board.
Suicide is a form of chess where the goal is to lose all your pieces. If you can capture, you must. The king can be captured just like a normal piece and you can promote a pawn to a king. In case of a stalemate the player with the least pieces wins. You cannot castle.
Giveaway is very similar to suicide, but you can castle and in case of a stalemate the stalemated player wins.
Losers is also similar to suicide and giveaway, but the king works like it does in normal chess. It cannot be captured, you cannot a promote a piece to a king and if you are in check you must get out. You win by losing all your pieces or by being checkmated.
Comments and questions about or corrections to this web page can also be sent to the aforementioned address.