Chess Questions, Answered Properly

No, and this is probably the most common rules misunderstanding in all of chess. A pawn moves straight forward but captures only one square diagonally forward. The strange consequence. A pawn staring directly at an enemy piece can neither take it nor walk through it. The two simply stand there, frozen, until something changes elsewhere. This is also why pawn chains lock against each other and shape the whole character of a position.

No. Castling while in check is illegal, full stop. The king also cannot pass through an attacked square or land on one along the way. You must answer the check some other way first, and here is the part that stings. If you answer it by moving the king, castling is gone for the rest of the game, even after the king returns to his starting square. The rook is under no such restrictions. Only the king's path matters.

Checkmate. The king is attacked and there is no legal escape. The attacker wins. Stalemate. The player to move has no legal move anywhere, but the king is NOT attacked. That is a draw, instantly, no matter how lopsided the material is. A player with a lone king can draw against a king, queen, and three pawns this way. If you are winning big, the burden is on you to leave the enemy king breathing room while you close the net.

Yes. When a pawn promotes, you choose any piece except a king, and the choice is not limited by what is still on the board. A second queen is legal, a third is legal, and in theory a player could field nine. In practice, one extra queen usually ends the game quickly. The only caution worth knowing. With a huge material lead, a careless extra queen is the classic way to deliver an accidental stalemate.

When an enemy pawn jumps two squares from its starting position and lands directly beside one of your pawns, you may capture it as though it had moved only one square. Your pawn slides diagonally onto the square the enemy pawn skipped, and the enemy pawn comes off the board. The window is exactly one move wide. Play anything else and the right disappears for that pawn pair forever. It is a real, official rule, written into the laws of chess centuries ago, and our board supports it fully. The rules page has a step by step diagram if you want to see it.

Never. Chess ends one move before the capture would happen. Any move that leaves your own king attacked is illegal, so you can never actually present your king for capture. Checkmate is the moment capture becomes unavoidable, and the game stops there. This is also why you cannot simply ignore a check. The rules will not let you make any move that fails to address it.

Three likely culprits. Stalemate. Your opponent had no legal move while not in check, often after their cornered king ran out of squares. Threefold repetition. The same position occurred three times with the same player to move, which is how perpetual check forces a draw. Or the 50-move rule. Fifty consecutive moves passed without any pawn move or capture. Extra material protects you from none of these. If draws keep stealing your wins, the fix is endgame technique. Keep making progress, keep pawns moving when safe, and always check the enemy king has a move.

A gambit is a deliberate sacrifice, almost always a pawn, offered in the opening to gain something less visible in return. Faster development, open lines for an attack, or control of the center. The player offering the gambit is betting that the activity is worth more than the pawn. The most famous example is the Queen's Gambit, where White offers a side pawn to pull Black's central pawn off balance. The King's Gambit, wilder and older, offers a pawn right in front of the king for a fast attack.

Your opponent has two choices, and both have names. Accepting the gambit means taking the offered pawn and preparing to weather the storm. Declining it means ignoring the bait and developing normally. Neither choice is wrong. It is a matter of style. One warning for new players. A gambit is a real investment, not a trick. If you offer one and then play slowly, you end up a pawn down with nothing to show for it.

Chess has no solved best move, which is part of its charm. The two central pawn pushes, e4 and d4, have been the main battleground of master chess for two centuries because they grab central space and free pieces to develop. Knight to f3 is equally respectable. Honestly, for an improving player the choice between them barely matters. What matters is what you do next. Develop quickly, castle early, and fight for the center, and any of those first moves serves you well. Our strategy guide covers the full opening recipe.

The standard scale. Pawn 1, knight 3, bishop 3, rook 5, queen 9. The king has no value because the game ends before he can be lost. Use the scale to sanity-check trades. A knight for a rook is a good deal (worth 3 for worth 5), while giving a rook for a bishop loses value. But treat it as a guide, not a law. A knight planted deep in enemy territory can outperform a rook stuck behind its own pawns. Activity bends the numbers, and learning when it bends them is a big part of improving.

Our puzzles page serves interactive chess positions, including a puzzle of the day. The board is set, a win or a decisive advantage exists, and your job is to find it. Puzzle solving isolates exactly the skill that decides most games (spotting the fork, pin, or mate before it lands) and a few minutes a day builds it faster than full games do. Solved puzzles earn their own leaderboard points, and the strategy guide explains each of the tactical patterns the puzzles are built from.

Start at level 1 or 2 if you are new or returning after a long break. The lower levels of our AI calculate less deeply, so they lose the way humans lose. Missed forks, loose pieces, the occasional one-move blunder. That gives you realistic mistakes to punish, which is exactly how you build tactical vision. Move up when you win more than half your games comfortably. Levels 4 and 5 search several moves deep and will make you pay for wishful thinking.

Yes. The game runs in your browser with nothing to install and no account needed for casual play. Three ways to play. Against a friend on the same screen, against a friend anywhere in the world by sharing a short game code, or against the AI at five levels. A free account is optional and adds saved statistics, puzzle progress, and a spot on the leaderboard.

Everything happens in the quick setup panel on the chess page. The numbers below match the numbers on the screenshot.

Two details worth knowing. You can change the difficulty between games as you improve, and if you set both sides to human players, the same screen becomes a board for two. A friend sitting next to you takes one side and you take the other.

Playing against a friend takes one player creating the game and one player joining it. The numbers below match the numbers on the screenshot.

One nice detail. The creator sets all the game options, so the joining player does not need to touch the setup at all. The same flow works in every game on the site, not just chess.

Casual online games typically run 10 to 30 minutes. Lower-level AI games tend to finish faster because decisive mistakes come earlier. By default there is no clock, so a thoughtful game can take as long as it needs. If you want a timed game, pick a clock before you start. If you only have five minutes, a quick game against level 1 or 2 fits nicely. An evening game against level 4 or 5 is a different kind of session entirely.

Yes. Above the Quick Start button, and at the top of the Configure Game card, you will find four buttons. No Clock is the default. 3 Min, 5 Min and 10 Min give each player that much time for the whole game. Your choice is remembered, the same way your AI level is. It works against the computer, with a friend online, and on one screen.

The clock only runs on your turn, and nothing is added when you move. If your time runs out you lose, unless the other side could not have checkmated you with the pieces they have left, then it is a draw. The computer also plays against its own clock, so it thinks less on each move as its time falls. Tournament organizers can set a clock for each chess game as well, anywhere from 1 to 60 minutes.

On our server. Your page only shows the time. This means a slow connection, a frozen tab or a refresh cannot stop your clock, and nobody can slow it down. Each player has their own clock, and there is a short half second pause after every move so you can see what changed. The pause is not counted as your time and not added to it either.

It is a number that shows how strong you play chess on our site. Everyone starts at 1200. You win points when you beat a player who is as strong as you or stronger, and you lose points when you lose to a player who is as weak as you or weaker. It is our own scale, not an official FIDE rating, so it will not match a number from a club or another website.

Your first 30 rated games move it faster and it shows a question mark until then. You can see it next to your name during a game, on the result card, in the Rating and badges tab of your profile, and on the Chess Elo leaderboard.

Games against the computer and games against a friend online, when you are signed in. Games on one screen, games as a guest and tournament games do not count. The clock does not matter, you have one rating for all your chess. The same two friends can have at most 4 rated games against each other in one day, so a rating cannot be built by trading wins.

If you close the page or start a new game after 6 or more moves against the computer, the game counts as a loss.

It depends on the rating of your opponent. Against someone of equal strength a win is worth about 20 points in your first 30 games and about 10 after that, and a loss costs the same. Beating a much stronger player is worth more, up to 40 points at first. Beating a much weaker player is worth very little, but never less than one point. Losing to a much weaker player costs more. The computer has ratings too, one for each of its five levels, and they change slowly as people play against them. You can see them on the Chess Elo leaderboard, and in the hint of each level button before a game.

Yes. Open your profile, go to the Rating and badges tab and tick the box to hide your name. You then show on the leaderboard as Anonymous with a number, and the change appears after your next chess game. The player you are facing in a game always sees your rating next to your name, whatever you chose.

When a game ends, press Analyze Game on the result card. You can also press it later, it sits above Download Game next to the board. A new tab opens with your game and the analysis starts on its own. It works for games against the computer and for games against a friend online, and you do not need an account.

You get a label on every move, an accuracy score for each side, a graph of who was ahead, and a short explanation of the moves that mattered. Press Next issue to jump from one mistake to the next.

Brilliant is a sacrifice that really works. Great is the only move that kept your position healthy. Best is the first choice of the engine. Excellent and Good are close to the best and cost almost nothing. Inaccuracy, Mistake and Blunder cost more and more of your winning chances. Miss means your opponent made a mistake and you did not use it.

The labels compare your move with the best move in the same position, so a move can be called a mistake even when you were still winning, if a clearly better one was there.

It is free for everyone. The analysis is done by Stockfish, a free chess engine, which runs on your own device inside your browser. Nothing is sent to our server for it, so it costs us no server time and your game stays with you.

A game of about 40 moves usually takes around a minute on a computer, and longer on an older phone. You can watch the progress and start reading the first moves while it works.

It is a quick count of who is ahead. In chess it is the material count. Each pawn counts 1, each knight and bishop 3, each rook 5 and the queen 9. The number shows next to the player who has more, so a plus 3 means that player is up about a knight. It is only a simple count of pieces. It does not see threats or checkmate, so a player can be behind in material and still be winning.

The other games show a plus number too. In checkers it is the pieces on the board, in Walls it is how many steps you are ahead on the shortest path, and in backgammon it is the pip lead.