# Questions tagged [problems]

Chess problems consist of a board position and a task. Most ask for a line of play that mates black in a set amount of moves, or a combination that results in a winning position. Many other types exist, including, but not limited to, construction tasks for various positions and proof games that have numerous goals, selfmates, helpmates, and retrograde analysis. Tournaments and championships exist for composing of original problems and for speed-solving.

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### Which is the 200 move won position?

In "How Life Imitates Chess", end of chapter 16, Kasparov says that positions needing 200 moves to win have been discovered with the help of computers. So I am wondering which such position is, which ...
337 views

### Maximum number of captures in a position

I was wondering what the maximum number of captures in a position is, either in a real game or a problem.
2k views

### Pawn Promotion Endgame Problem-White to move and mate in 1

So I have not been this interested in chess for a very long time indeed. This problem was posed to me by someone who has recently become experienced in chess and also participated in a chess ...
242 views

### Indian theme in real life

We all know this beautiful theme of self-interference. [Title "Loveday, mate in 3"] [fen "3R4/5K2/8/4k1P1/4p3/7B/4p3/8 b - - 1 0"] Solutiom: Has such a motive ever occur in an OTB game?
2k views

### A conditional retrograde analysis problem

Here is the problem-find a chess game that begins with 1. e4 and ends on the fifth move with knight takes rook mate, which determines who gives the mate. This is a famous puzzle. For additional ...
3k views

### What is the most complex chess problem?

There are many chess problems and studies that are very nuanced and can take ages to properly figure out. What is the chess puzzle/problem with the longest (proven) solution?
949 views

Could a player sacrifice 3 of his pieces , the opponent's King being forced to take each piece in a sequence of moves where the opponent's King lands on a space where it is promptly checkmated? A kind ...
397 views

### Resource with chess problems in electronic format with solutions

I am looking for a database of chess problems in electronic format with solutions. Ideal variant will be a database with something like: FEN starting position * description (Mate in 3 moves, Win ...
2k views

### Could you show me some very easy mate in 20?

I am looking for some puzzles where there is a forced mate in as many moves as possible (ideally 20 or more). Yet the puzzles need to be as easy as possible! You will probably need to find some ...
429 views

### Position with the most (or many) distinct refutations?

I'm looking for a chess position, hopefully not too contrived, in which it's Black's turn, he has several moves, but each one is refuted by a mate by White. I know I could take any mate-in-two ...
653 views

### A problem rebus-reproduce the game

Here is a chess "rebus" problem. In this position, white and black circles correspond to White and Black pieces respectively. Each letter corresponds to exactly one piece type (king, queen, ...
1k views

Raymond Smullyan wrote some great books with Retrograde Analysis chess puzzles. I know of two, are there others?
769 views

### Trying to locate an old problem

A friend of mine showed me a great white-to-mate-in-three puzzle back in the late '50s or early '60s. Unfortunately he doesn't recall it. I can remember a few things: It was composed by someone from ...
885 views

### Another problem-Find color of the pieces

Please help me to find solution of this next problem by the legendary composer Andrej Kornilow. It appeared in Shakhmatnaya Kompozitsiya 41 issue in 2001 and it was dedicated to A. Lobusow on his 50th ...
295 views

### Is there retrograde analysis puzzle like “Point on the incorrectly drawn chess piece”?

Does anybody know a nice chess puzzle, where question states: "Exactly one piece is drawn incorrectly on this diagram, another piece must be drawn on it's position. Find incorrectly drawn piece."? One ...
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### Longest forced sequence that ends with checkmate and every move is a check

What is the longest move sequence that ends with checkmate and every move is a check by both players?
303 views

### Maximum number of non-pawn pieces on the board

In a reachable game, what is the maximum sum of queens, rooks, bishops, knights, and kings on the board? For queens only, see Maximum number of queens possible
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### Problem: Find White's second-to-last move

For the following position to occur in legal play, with Black on move, what would White's second-to-last move need to have been? Note that Black is checked by two pieces on the h1-h8 file and two ...
974 views

### A cool problem by Godfrey Heathcote

I didn't get a thought of a better title :) I am trying to solve a problem which is white to move and mate in 2 moves. To be frank, I am not asking all problems here. On my own I solved more than 50 ...
641 views

### Another chess problem

The below puzzle White to mate in two moves. I tried all combinations. I can't figure it out how to solve this? I am starting to think this as a bug in my mobile application which is showing wrong ...
1k views

### Need help to solve a puzzle

I have been trying to solve the below chess puzzle for more than 2 days. Can someone help me to solve it? White to play and mate in two moves [FEN "n1N1Kn/2p/P1k/2p1Q/P/2P/7B/6Nq w - - 0 1"] I have ...
565 views

### What is the longest non-cyclic forced sequence of moves? [duplicate]

I am looking for positions from where every move is forced up to a certain depth. If the original position (or one in between) occurs again, the sequence is finished there.
3k views

### Longest sequence of mutually forced moves

In this position, the black move 1. ... Qc3 results in two consecutive forced moves, Kxc3 and Ke7: 2rkr3/2p5/2q5/8/8/8/3KP3/3R4 b - - 0 1 1... Qc3 2. Kxc3 Ke7 What is the longest sequence of ...
2k views

### Is it possible to have a double self-smothered stalemate?

I came up with this rather amusing and bizarre stalemate where Black stalemates itself by self-smothering. [FEN "8/8/8/8/8/3p4/pp6/krb1K3 b - - 0 1"] 1...d2+?? 2. Kd1 The peculiar feature of ...
4k views

### Is there a computer program that generates quality chess problems?

Is there a chess engine that automatically generates quality chess problems. For example I will input 3 - it produces a mate in 3 problem. But the problem shouldn't be so obvious that one can solve in ...
2k views

### Maximum possible movement in a turn

I've read that for any position, there are on average approximately 35 possible moves. But what's the maximum number of possible moves for a position?
273 views

### Help needed with a chess dilemma

How can I get a checkmate in three moves? [FEN "8/2R5/1B1k4/2R5/3N4/1K6/3p4/8 w - - 0 1"]
751 views

### A chess problem question: Why is this the solution?

[FEN "5B2/3p1n2/R2p4/1P1NRBQ1/1KPkrb2/1p6/2Pp1Pn1/4r3 w - - 0 1"] 1. Nc7! Rxe5 (1... Nxg5) (1... d1=Q) 2.c3# What would make you play Nc7? This results in checkmate in 2 if, as the ...
417 views

### What is happening in this problem?

I recently solved a problem chess.com and it is below. What I don't understand is that why black moved its rook to h8 (1...Rh8). I think that black's position would have been better if it was ...
3k views

### Shortest possible game with 18 queens?

The selected answer to this question shows a game in which all 16 pawns promote to queens so that there is a total of 18 queens on the board. It takes 80 moves... What is the shortest sequence of ...
14k views

### Maximum number of queens possible

I was thinking about what the maximum number of queens can be on the board after only legal moves. The theoretical upper bound would be 18, the original 2 queens plus 16 promoted pawns. However, to ...
690 views

### Problem: reconstruct the game

In the following position, each side has made exactly 4 moves (8 in total). [fen "rnbqkbnr/pp3ppp/2p1p3/8/4P3/8/PPPP1PPP/RNBQK1NR w KQkq - 0 1"] I need to find what these moves were.
658 views

### Studies that have been cooked by computers

A study is unlike a regular chess problem. Instead of "mate in 3" (for instance), a study's instructions are something like "White to draw" (for instance). What this means is to find a line of play ...
695 views

### Make checkmate with pawns without promotion

I have a chess puzzle here: [FEN "7k/8/8/4KPPP/8/8/8/8 - - - 0 0 "] Can White force mate without promotion? And if such exist, where can I find some more chess puzzles like this, which feature ...
2k views

### THE longest problem ever (much longer than the mere 549 mover…)

The "Fireside Book of Chess" by I. Chernev and F. Reinfeld includes the following diagram [fen "3nk3/3NN3/3PP3/3BB3/3PP3/3PP3/3PP3/2RQKR2 w - - 0 1"] Composed by J.N. Babson for ...
635 views

### How to learn basics of composition?

There are a few resources in the web for problem composers. Problem is the usually assume you are already part of the community. As a result one has to wander around to find out what is a grasshopper, ...
274 views

### What makes a contemporary chess problem decent?

One can set up some pieces and concoct a situation that has, say, a mate in 3 (yes, I know it is not straightforward, but if you sit for a few hours you can do it). Such problem would probably not be ...
259 views

### What is the best continuation in this problem-h4 or Qd8?

In the given diagram, I have two best ways to continue for white, which is the better option out of these two and why? [FEN "2Q5/p1P2pkp/1p2p3/5p2/3P4/5P1P/P2q2PK/8 w - - 0 1 "] 1. Qd8 Qf4+ (1. h4 ...
309 views

### Online resources for medieval Persian chess games or problems?

I am looking for any collection of chess games of al-Suli or anyone medieval scholar's composition of games. Any resources would be appreciated.
849 views

### Self-Solving Chess Problems

Are there any longer "problems" like this, which is white to move and mate in 6? (Namely, where one is actually forced to achieve the "goal".)
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### Chess problem - don't understand the solution

Black to move: [fen "4rbk1/pp3pp1/1nq4p/8/1PP5/P3N1P1/Q2BrP1P/3R1RK1 b - - 0 1"] I've tried to solve this chess problem - black to move, find the best move. I couldn't work it out so I checked the ...