Chess Terms


Are you tired of studying opening lines and simply want to have some fun with chess? If so, Chess960 might be the right choice for you!



Here's what you need to know about Chess960

Bobby Fischer
Bobby Fischer advocated the variant of chess known as Chess960. Photo: Wikipedia.

What Is Chess960?

Chess960, also known as Fischer Random Chess, is a variant of chess strongly advocated by legendary grandmaster and former world champion Bobby Fischer.

The main difference in this chess variant is the starting position of the pieces. While the pawns' positions remain the same, with White's pawns all on the second rank and Black's pawns on the seventh, minor (knights and bishops) and major pieces (rooks, king and queen) are placed semi-randomly on the first and last ranks.

Although other versions of random chess exist, in Chess960, there are rules as to the ways the minor and major pieces can be placed on the board. Those rules are intended to maintain the dynamics of regular chess and prevent one player from starting the game with a definite advantage over the other.

I want to keep the old chess game. But just making a change so the starting positions are mixed, so it's not degenerated down to memorization and prearrangement like it is today.
— GM Bobby Fischer

The number 960 in Chess960's name comes from the number of possible positions in how the game can start. With the restricting rules on the chessboard setup, there are 960 possible combinations for the pieces to be in when the game commences. Precisely for this reason, Fischer believed that this variant should be considered the future of chess because he felt that chess was losing its flavor due to pre-game preparation. The variant offers new excitement because there is no way to predict the initial positions and might inhibit players from preparing at all.

One of Chess960 starting positions.
This is only one of the 960 starting positions of this variant.

Since there are so many possible positions, a player can't memorize opening moves to gain an advantage over their opponent. The player must then outplay the challenger by sheer creativity, knowledge of general chess principles, and calculation.

In 2019, GM Wesley So became the first Chess960 World Champion in history in an official FIDE event in partnership with

Nepomniachtchi vs. So - FIDE World FR Chess Championship 2019.
Nepomniachtchi playing against So during the FIDE World FR Chess Championship 2019. Photo: Lennart Ootes.

How To Play Chess960?

The rules for Chess960 are mostly the same as the ones in regular chess. After the game starts, a player can win by checkmating their opponent or in case the other player's time runs out. Resignation and drawing rules also apply to this variant.

The only differences are in the way the pieces are positioned at the beginning of each game and the way the players perform castling.

Chess960 is healthy and good for your chess. If you get into it and not just move the pieces to achieve known positions, it really improves your chess vision.
— GM Levon Aronian

Piece Placement

Some restrictions are applied to piece arrangement to preserve original chess dynamics. Listed below are the rules that are respected in this variant.

  • White's and Black's minor and major pieces must be placed on the first and last rank, respectively.
  • White's and Black's position must be mirrored. For instance, if the white queen is on a1, the black queen should be on a8.
  • The two bishops of each player must be placed on opposite-color squares.
  • The king must be positioned between the two rooks. This means that the king will never be on the a1 or h1 square for White and a8 or h8 for Black.
Chess960 starting position.
Another starting position.

Castling In Chess960

In Chess960, castling rules are mostly unchanged. Each player is allowed to castle once if the following requirements are met:

  • It is the first movement of the king and the rook.
  • No square the king has to pass to its final position is under attack by opponent pieces.
  • All squares between the king and the rook's initial and final squares are vacant.

If castling is allowed and a player decided to do it, the final positions of the king and the rook are the same as the ones reached during castling in a standard game. Thus, to castle in Chess960, you must be familiar with the castling positions of regular chess.

First, you must know the difference between castling kingside and queenside. Even though the king and queen can be positioned on different sides than in regular chess, the terminology for these regions of the board is still the same. The kingside is to the right of the white player, while the queenside is to their left.

King side and queen side.

Now that you are familiar with those terms, here are the two final positions of your king and rook after castling to either side.

Castle-kingside (also known as "castling short"):

Castle-queenside (also known as "castling long"):

If you remember these positions, castling in Chess960 is very simple. You simply take your king and place it in its final castled position, on whichever side you want.

Since the king and rooks are placed randomly, the resulting move can look weird if you are not used to it. Sometimes the king and rook just switch places, sometimes only the king moves, and so on. Don't worry, though, since this is normal. The vital point to remember is that your king and rook always end in regular castle positions.

On, it is very easy to castle correctly. All you need to do is to drag your king on top of the rook to the side where you want to castle. Take a look at the two examples below.

This is how you can castle to the kingside on

Castling king side.

This is how you castle queenside.

Castling queen side.

How To Play Chess960 Well

Learning the rules to Chess960 is only part of what you need to do to play it well. If you want to get better at this variant and start beating your opponents, check out this video by IM Daniel Rensch that teaches the rules and strategies for Chess960!

What Chess Program Plays Chess960?

If you want to play Chess960 against the computer, there is no better place than at! You can even select the computer strength and turn on coach mode to improve your play.

Here is how you can play Chess960 against the computer on

1) Place your cursor over "Play" on your left-hand side and select the "Computer" option.

Play Chess960 against the computer.2) On your right-hand side, select your desired opponent from one of the many computer personalities we have on

Play Chess960 against the computer.3) Click "Choose" and then "Custom."

Play Chess960 against the computer.4) Scroll down to find the drop-down "Type" meny and select "Chess960" from the list. After that, click "Play."

Play Chess960 against the computer.

How To Play Chess960 Online On

Playing Chess960 against your friends or other players around the world is incredibly simple on! The easiest way to do it is visiting our Variants page and selecting Chess960 option on the variants menu (Go to "More" and then choose "Common").

Play Chess960 Online on
Play Chess960 online on!


Chess960 can be a fun variant of chess to play, especially if you want to steer clear of opening preparations. It can also be an excellent way for you to sharpen your tactical and strategical skills since you have to rely heavily on them. Create a Chess960 challenge right now and start playing on!

Do you want to play other chess variants on Click the button below!

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