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Starting Games Challenges Making Moves and Analysis Board Castling and Pawn Promotion Conditional Moves Offering / Claiming Draws

Conditional Moves

A conditional move is a move which you can enter in advance to be played automatically, amd instantly, when your opponent moves.

For example, suppose you are white and you have played 1.e4. You might now say: "If my opponent plays 1... e5 then I will play 2. Nf3." This can be entered as a conditional move and then, if your opponent does play 1...e5, your reply 2. Nf3 will be played automatically by the system without using any of your clock time.

Entering a Conditional Move When It's Your Opponent's Turn

When it is not your turn to move, you can enter conditional moves as follows.

Make a move for your opponent on the board. This starts 'analysis' mode where you can make moves for both sides and your moves appear in a box at the bottom of the move list.

Now make your own response move on the board. The 'Submit Conditional' button is enabled.

You can now submit the conditional move by clicking the 'Submit Conditional' button. The moves you have entered (one for your opponent and one for yourself) now appear at the top right in the 'Conditional Moves' section. You can click on a conditional move to display that position on the board and use the arrow buttons to move forward and back through the line. The entire line can be deleted by clicking the 'x'.

Now, if your opponent plays the first move in the conditional line - in this example 1... e5, then your response 2. Nf3 will be played automatically. No time will be used on your clock and it will be your opponent's turn again. The conditional moves will disappear from the page and the move that was played automatically is marked with a '(c)' in the move list.

Entering a Conditional Move When It's Your Turn

To enter conditional moves when it's your turn to move the procedure is the same as above except that the first move you make on the board will be your own move rather than your opponent's. This first move will be played immediately when you click submit, and the remaining moves will become a conditional line.

Longer Lines of Moves

A conditional line can be longer than one move for each player. It can be any length. Simply keep making moves on the board for both players. You can submit the moves as a conditional line at any time as long as the final move is yours. If your opponent follows this line then several of your moves can be played automatically with no further action by you.

After submitting the conditional line, it is displayed as shown below.

Multiple Conditional Lines

You can submit any number of conditional lines to handle different moves your opponent might make.

Ways Your Conditional Lines Can Disappear

Conditional moves become obsolete when your opponent makes a move. Whether your opponent makes the move in your conditional line, or whether they make a different move, the pair of conditional moves (your opponent's move and your response) will be removed from your conditional move display box.

For example, if your opponent makes a move that matched one of your conditional lines, your response move is played automatically and those moves are no longer displayed as part of the conditional line because thay have been used and can not be used again in the game.

If the line contains more moves, then these will still be active and remain displayed. That is, the conditional line is shortened by two. Other lines which do not match the move made by your opponent are removed completely because they are no longer relevant.

If your opponent makes a move which does not match any of your conditional lines, then all your conditional lines are removed because they are no longer relevant.

A conditional lines can also disappear if you enter a new conditional line which clashes with it. For example if you already have a condiitonal line:

1...Nc6 2.d4

and you enter a new line:

1...Nc6 2.d3

Then the new line clashes with the first because they are both triggered by your opponent playing 1... Nc6 but your response move is different. In this case the first line will be removed and replaced by the new one.

Longer conditional lines can contain identical sequences of moves without clashing as long as they contain a different opponent's move at some point. For example, consider the conditiona lines for white:

1...Nc6   2.d4   Nxd4   3.Qxd4


1...Nc6   2.d4   Nc6   3.e5

These lines do not clash because the opponent's (black's) second move differs. If black plays 1...Nc6 then 2.d4 will be played automatically and both lines will remain valid but will be shortened to:

2...Nxd4   3.Qxd4

2...Nc6   3.e5

When You Trigger Your Opponent's Conditional Move

You can not see your opponent's conditional moves. However when you make a move, your opponent's conditional move may be triggered and will be played instantly. In that case it will be your turn to move again and you will see a message at the top of the page as shown below.