Unanswered Questions

13
votes
0answers
479 views

Does white really have a win in this pawn ending, as claimed by Tim Krabbé?

Update: ​ ​ ​ ​ I emailed Tim Krabbé, and he agrees that ​ 41. b4 bxa4 ​ draws. He has posted a PS about this just under his old analysis. With respect to "Skawinski - Tomczak, European ch rapid, ...
9
votes
1answer
204 views

How to compose retrograde analysis problems?

Are there any books or articles devoted to composing retrograde analysis problems? It seems that you would need some techniques beyond ones for standard problems.
8
votes
1answer
217 views

Endgame Fortresses

[fen "6r1/1p3k2/2rb1p1p/3NpP1P/PpPp2pR/1P1K2P1/4RP2/8 b - - 0 1"] If Black holds his bishop on c5, rook on a8/a5 (if a5 is a threat), rook on g8 (protect g4) or the 8th rank, is there any way for ...
6
votes
0answers
94 views

Source of this chess problem?

[FEN "8/8/8/6pp/6pk/R7/6KP/8 w - - 0 1"] 1. Rh3+ gxh3+ 2. Kf3 g4+ 3. Kf4 g3 4. hxg3# 1-0 What is the source of this simple chess problem (White to mate in four) which somebody showed me at a chess ...
6
votes
1answer
157 views

Looking for a chess variant with a circular board

I am looking for a certain chess variant played on a circular board. The variant is played with the usual chess pieces (no fairies involved) on a peculiar circular board. The central part of the ...
6
votes
4answers
2k views

How do FIDE rated players perform on lichess?

I have been playing on lichess for a while and it strikes me how low ratings are compared to other rating systems. This is not to say that players are weaker, I have quite the opposite feeling, but ...
5
votes
0answers
144 views

Should white be able to win this endgame?

Should white be able to win from the position [fen "8/5k2/3p1p2/3PnP2/1KP1r1P1/8/3RB3/8 b - - 0 67"] with black to move? (A game I was playing ended there when black just let black's time run out ...
5
votes
2answers
155 views

What's the best strategy against the Hippo?

What's the best strategy against the so-called Hippopotamus opening or defense, in which White or Black pushes almost all of her pawns on the 3rd or 6th rank, except perhaps the a and h pawns, and ...
5
votes
3answers
635 views

What is the result of this pawn-endgame with perfect play by both sides?

W : Kg2 , Pa2, b2, c2 S : Kb7 , Pf7, g7, h7 White to move [fen "8/1k3ppp/8/8/8/8/PPP3K1/8 w - - 0 1"] Houdini's shootout ended in a black win with depth 23 Ply and a white win with depth 25 Ply. ...
5
votes
2answers
341 views

Is there an online PGN editor for Blank Chess?

http://www.blankchess.com/ Blank Chess is a variant where the board starts empty and the first two moves are placing the Kings on your side of the board. You can then either place a piece or move a ...
5
votes
0answers
303 views

Trying to locate an old puzzle

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 ...
4
votes
0answers
54 views

What's the best way for someone to use their time with a chess coach?

Let's say you have a 2 hour session. What questions would the serious player studying with a chess coach ask? Could you provide some examples?
4
votes
1answer
180 views

Moves to test a notation generator

I've made a small program that takes a list of moves in ICCF notation and translates them to the following: SAN FAN LAN MAN RAN CRAN Smith Descriptive Coordinate ICCF For example, a starting move ...
4
votes
1answer
76 views

Assigning Engines in Arena

How does one assign a specific engine to a specific color in Arena? I load a PGN file and move to a specific point in the game. At that time I want to assign Engine A to play black and Engine B to ...
4
votes
1answer
254 views

Chess Position Trainer

Would anyone know how to set up training in a "random position" with Chess Position Trainer (ver 5.04)? I know and use its option to train "the variation", but was hoping there would be sort of - ...

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