Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [puzzles]

A problem in which a tactical or positional solution is required, like 'White move and gives mate in two'.

0
votes
1answer
77 views

Position with the largest material imbalance that is a draw, no matter whose turn it is?

I am curious if there is a known position with the largest material imbalance that, no matter who it is to move, the weaker side can hold a draw.
0
votes
1answer
89 views

super stalemate [duplicate]

Your challenge. Find a position such that one side cannot make any legal or illegal moves. I.E. Make it such that that even if you were allowed to move your king into check there would still be no ...
2
votes
1answer
133 views

Why was this move in a puzzle?

I was on the chess.com app this morning doing the daily puzzle and it wanted me to play Re2. This is questionable to me, because it just delays the mate, but I figured I might have missed something. ...
1
vote
1answer
188 views

Doubt about best move in lichess.org training puzzle

In this puzzle, https://lichess.org/training/61639, in this position: 1k2n1rr/1b4q1/1p1p1p2/1PpPpQ2/2P1PnN1/2N4P/R5PK/R2B4 b - - 10 33 the engine says that the best move for black is Rh5, I think it ...
1
vote
1answer
105 views

How to mate a king already in the corner with a knight and a bishop?

How can white mate black in 4 moves in this game. This might be easy but I am a beginner. 7k/7N/6K1/8/7p/7B/8/8 w - - 1 0
4
votes
2answers
175 views

Easy mate in three

This time an easy puzzle I made up today. White mates in three. [FEN "7k/4Kp2/P4Np1/6R1/8/R6P/8/8 w - - 1 0"]
14
votes
2answers
2k views

Can white win in this almost 20 year old puzzle?

White to move. Can white force a win? (left bottom is a1 as usual) [FEN "4k2r/6p1/p4pKb/p2N3p/p7/p5Q1/p1n5/qrn5 w - - 9 9"] Note for people who saw an earlier version: the position was edited (...
6
votes
3answers
321 views

Can you mate with each of your 16 pieces on its original square?

An opinion poll conducted by problem composer Roberto Osorio over 10 master-level chess players in the Argentine Chess Club produced 100% wrong answers! :-) When the right answer is posted here, I ...
9
votes
2answers
240 views

E.Umnov's chess problem, 1944. Checkmate in two moves

White to play and checkmate in two moves. [title "E.Umnov's chess problem, 1944"] [FEN "k7/5QK1/3n1pb1/1R1p1r2/5p2/8/1p6/4R3 w KQkq - 0 1"]
2
votes
1answer
104 views

Checkmate in two moves [duplicate]

White to play and checkmate in two moves. [fen "5Kbk/6pp/6P1/8/7R/8/8/8 w KQkq - 0 1"] Is it possible? If so, please write a solution.
22
votes
2answers
4k views

Why underpromote in this KNNP-KR endgame?

In the position below, I'm promoting my pawn. The app says promoting to a Queen is incorrect, but a Rook is correct? In this setup it doesn't make sense. [FEN "8/1P6/3N4/8/8/3k4/r7/4KN2 w - - 0 1"] ...
8
votes
1answer
196 views

Which chess position requires the most moves to reach?

For each legal chess position there exist a shortest sequence of moves from the starting position to that position. Which position requires the most moves to reach?
12
votes
3answers
445 views

Beautiful retrograde analysis problem by Alexsey A. Troitsky

I saw this beautiful, subtle & accessible problem a couple of days ago, and wanted to share it with you folks. (It's by the ground-breaking endgame theorist who e.g. invented the "Troitsky line" ...
2
votes
3answers
212 views

What was Black's last move?

White to move. What was Black's last move? And what could have happened before that?
0
votes
2answers
105 views

Could chess puzzles change with the introduction of stronger engines?

Something I've noticed is even older chess puzzles never seem to age, somehow they even seem more masterful and demanding then the puzzles created today, but what if the solution for a puzzle is ...
21
votes
3answers
5k views

White to play and checkmate in two moves

White to play and checkmate in two moves. 7R/1B1N4/8/3r4/1K2k3/8/5Q2/8 w - - 0 1
3
votes
1answer
152 views

Puzzles that highlight the finiteness of the chessboard

I'm curious as to whether there are compositions of chess puzzles/problems where the solution really emphasizes the boundedness of the board. Put differently, cases where the solution would be ...
5
votes
3answers
4k views

Chess Puzzle Database with PGN or FEN

Is there a database of chess puzzles that have the game or positions PGN and or FEN?
7
votes
1answer
266 views

Prove color of pawn and position of knight

I was recently given a retrograde type of puzzle to solve, even though I've managed to at least intuitively get close to an answer, I don't know how to put it in the form of an acceptable proof. For ...
3
votes
2answers
89 views

Rearrange chess diagrams (from an opening) in order. Useful as a puzzle?

Here is an example https://chess-tst.000webhostapp.com/chess.html The task is to rearrange the diagrams in order (use drag&drop). Do you think this activity could be useful for exploring and ...
1
vote
1answer
138 views

Knights necessary to mate king on large finite board

How many knights would be necessary to mate opponent's king on large finite boards like billion times billion squares? Are they fast enough to surround opponent's king in very limited constant count ...
40
votes
3answers
12k views

Win the game by just moving king?

How short can a game be in which (after the first move) one player moves only his King, and yet checkmates their opponent? (Assume that the players co-operate: i.e. this is a kind of "helpmate". This ...
-7
votes
1answer
231 views

Chess puzzle ONLY for strong players [closed]

After playing a game (black) at a local tournament I realized the algebraic notation at my score sheet is purely noted. Somewhere along the lines, probably around 15. and after, one or more moves are ...
7
votes
3answers
1k views

Maximum number of pieces on board in dead position

It is possible in a chess game to have a dead position in which both players have all eight pawns, one bishop, and a king--20 pieces total. If the two players' pawns are interlocked in "zig-zag" ...
9
votes
6answers
447 views

Helpmate of arbitrary length

One of the FIDE rules states that if someone's flag falls, and there exists a legal sequence of moves such that the other player mates the first player, then the position is a win for the second ...
35
votes
2answers
6k views

How is this position possible in a normal game of chess?

A friend of mine gave me this problem. It goes like this. In a normal game of chess, the white player checks the black's king with a rook and a bishop as in the following image. 8/8/8/8/8/7k/8/...
0
votes
3answers
2k views

What is the best way to solve chess puzzles?

Doing puzzles at lichess.org I stuck at raiting 1750 +- 50. I cant really go over 1800. So what are the first things one should check by solving puzzles? Are there some tricks how to solve puzzles?
3
votes
2answers
93 views

Looking for a Horowitz game

I just remembered a puzzle from a Horowitz game in which he played white against an Italian (I believe) player whose name started with "M". The black queen was defending f6, preventing Bxf6#. There ...
3
votes
2answers
287 views

Why wouldn't black take the rook here?

This puzzle starts on move 19 of the below game. In order to get the puzzle correctly, it seems that you have to believe that black would not take the rook with 20.. gxf6. But I don't understand why ...
1
vote
1answer
132 views

Why doesn't 1.fxe4 Nf6 work for black in this puzzle?

I was solving puzzles and I failed this one. The correct answer was fxe4 fxe4 Bxh5+. Why can the knight not just move to f6 and be safe there? fxe4 Nf6 exd5 fxd5 is in my opinion more preferable for ...
6
votes
3answers
1k views

“Knight rebus”. Decipher an encoded chess position

Here is a rebus: Each letter represents a different type of piece. Uppercase is one colour, lowercase is the other. Determine the position. If possible, also determine the last moves ...
8
votes
1answer
533 views

Chess challenge from a newspaper in 1927 (win in 2 moves)

I have been trying to solve this for a long time, but can't find a solution. How can white force a checkmate in 2 moves? 1R6/4p3/2pkB3/4n1N1/8/1N2K1B1/8/8 w - - 0 1
5
votes
1answer
114 views

Is today's chess.com daily puzzle a draw (as hinted at in the puzzle title)?

Today's daily puzzle on chess.com is called Desperation Draw: White to move [FEN "r5k1/P4ppp/8/8/p1p1P3/4KP2/2P3PP/5R2 w - - 0 1"] 1. Rb1 Rf8 2. Rb8 * One of the commentators asked: What draw? ...
5
votes
2answers
121 views

Is my solution to this puzzle wrong or a transposition of the official one?

I saw the following puzzle recently in a newspaper: Black to play and win 6rk/6qp/2Bp4/P1pP1p2/3bnP2/6BQ/7P/5R1K w - - 0 1 My proposed solution was 1. ... Nf2+ and the lines I foresaw were ...
6
votes
4answers
322 views

Reviewing Chess Tactics Puzzles

Is there somewhere online I can play chess tactic puzzles and redo them whenever I want? I do tactics on lichess but it doesn't store my puzzles. Is there somewhere that stores all my tactic problems ...
9
votes
3answers
1k views

Strategic implications in this puzzle by S. Polgar/P. Truong

Usually chess puzzles at my level (beginner) have just one or two forced variations and a clear achievement, like a substantial material gain or checkmate. Once in a while, though, a puzzle leaves me ...
2
votes
3answers
119 views

Good format for library of chess positions w/tags?

I'd like to create a library of chess positions with associated tags. For example, one position might be tagged "Tactics", "Counterplay", and "Knight Forks". The goal is to be able to search the ...
0
votes
3answers
113 views

Puzzle training: rotating tactical themes or exhausting each one?

I agree that many people like it more when chess puzzles do not give a clue on the tactical theme. That is not my question, and I would like to focus on how to study a collection of chess puzzles ...
6
votes
3answers
690 views

Method to study chess puzzles way above your level

I have a collection of middle-game chess puzzles classified in levels. I can solve most puzzles in the first level after a few minutes, and some of the puzzles in level 2. But for higher levels there ...
2
votes
1answer
216 views

Chess puzzles in newspapers and magazines which offer a prize

I like chess puzzles, and particularly like those for which there is a prize. The Times, Sunday Times and Spectator provide weekly puzzles (I'm based in the UK). These puzzles are available online as ...
9
votes
4answers
767 views

What is the longest known stalemate your opponent in X moves problem?

What is the longest known stalemate your opponent in X moves problem where the stalemate is a fastest draw from a drawn position? I.e. a win is not possible but stalemating your opponent so they can'...
3
votes
2answers
220 views

Calculate the first N unknown moves of a chess game

Greetings fellow chess friends, Here is a quick idea that came to my mind. I am interested in writing a software that is able to calculate and/or guess the first n unknown moves of a given chess ...
3
votes
1answer
282 views

Where can I find collections of chess problems (ideally direct mate) with solutions?

I'm working on a chess program that gives the user various compositions for them to solve. So far I'm only including mate in n problems where 1 < n < 5, and I'd prefer to only deal with this ...
3
votes
1answer
139 views

Strategy behind this chess position?

I am only used to check-in-n type of puzzle, so I am quite lost when my friend challenge me to this endgame position. EDIT: figured out how to do the chess board (note: the board seemed to be flipped, ...
0
votes
1answer
84 views

Ideal move in this situation

https://en.lichess.org/training/5571 Why is White knight to f5 not an ideal move in this situation? As far as I can see, unless Black takes the white bishop with the rook, it's mate in 2.
5
votes
1answer
168 views

Simple mate in 2?

I used to be a problem composer and the thing I loved about creating and solving chess problems is that you can't just rely on simple patterns. You need to think outside the box. This is one of my ...
21
votes
2answers
4k views

What is the highest number of different mates in 1 you can have in one (legal) position?

A friend and I yesterday asked ourselves what the highest number of possible mates in a (legal) position is. We were able to come up with the following position which has a total of 76 unique mates in ...
15
votes
2answers
2k views

Prove that white is not allowed to castle here

A friend recently gave me the following weird chess problem to solve, and I'm afraid I'm struggling to see the key ideas, that would ultimately count as proof. From the position, intuitively speaking ...
4
votes
2answers
247 views

Help me with this puzzle

Look at this puzzle: [FEN "r3q3/1pb1rbk1/2pn1p1p/p1Qp1Bp1/3P4/4P1NP/PP3PPB/3RR1K1 b - - 0 1"] The aim of the puzzle is: Black to play and attain a good position. But I can't find a good position ...
1
vote
5answers
687 views

Chess Opening Puzzle App

I like chess puzzle apps. But they all focus on the end or middle game. The reason is clear: In the opening there is no single truth. But there is some common sense what's good and what's not. Is ...