Author: ken armagh
Date: 22:41:55 04/08/03
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On April 09, 2003 at 01:03:57, ludicrous wrote: >Hi, >Here are four interesting chess logic puzzles, that I hope you will >like. By logic chess puzzles, I mean those that are not commonly known >as "studies", and which need a fairly strong classic chess >understanding. These puzzles take as a base the chess board, most of >the time the pieces move along as in classic chess, but the rules must >not necessarily be the same. I would includ retrograd chess problems >in this category. Just for info, if you want a superb book, and not >too hard, on retrograd chess problems, I would highly recommend: Chess >Mysteries of Sherlock Holmes by Dr. Raymond Smullyan, a true >masterpiece I would say ! > >The first two problems are by Mr. Henry Ernest Dudeney and are >relatively easy, the third problem is by me and is somewhat harder, >and the fourth one, unfortunately I do not know by whom, and is the >hardest of all, but if tackled appropriately, it can be found, >really.. :-) > >1) Two rooks (these pieces can move as many squares as possible, only >vertically and horizontally) of opposite colors are placed randomly on >an empty chess board, without one menacing the other. Two players are >playing the game, one chooses the white rook, and the other one, the >black rook (they do not know the positions of the rooks before >choosing). The goal of the game being to capture the opponent's rook. >Now each rook cannot pass through, or be on, the "lines of fire" (that >is, the squares that it controls) of the opponent's rook without being >captured. This game can never end in a draw if both players know the >winning strategy. Question: What is the winning strategy ? > >2) We have the following board configuration: > >White: Pawn: f7 > King: g7 > Bishop: f6 > >Black: Rook: e5 > >This was a game between two persons. It does not matter where the >black king was, all we know is that black was completely lost, but the >person playing black was very smart, and, of course, needed to catch a >train. He could have abandonned, but instead he told the person >playing white: "Ok, I have to go now, you can finish the game for me, >I will just leave my king on a square on the board, and then you can >play all the moves in the world (black does not play, the black king >stays where it is forever) until you checkmate my king. You can even >leave my king in check with a piece (except the white king of course), >while playing with another piece (this is of course not possible in a >classic chess game). " The person playing white agreed, but to his >dismay, after much tries, he found it utterly impossible to checkmate >the black king ! Question: on which square did the person playing >black leave his king ? > >3) We have the following board configuration: > >White: Bishops: a2, b2 >Black: Bishops: h3, d8 > >Now assuming the same rules as in Dudeney's first problem. That is, no >bishop of a color, can pass through, or be on, a square attacked by a >bishop of the opposite color without being captured. This may need a >clarification: a white bishop, on white squares, cannot pass through, >or be on, a square attacked by a black bishop, on white squares; but >this white bishop on white squares is not at all dependent on the >black bishop on black squares, etc. The goal being to capture both >opponent's bishops. Question: White to play and win, how ? > >4) We have the initial chess board configuration, with all pieces on >their original squares. Now, playing a classic chess game, white plays >on each consecutive move: > >1. Pf2-f3 (Pawn from f2 to f3) >2. Ke1-f2 (King from e1 to f2) >3. Kf2-g3 >4. Kg3-h4 > >After white plays his last move, Kg3-h4, black immediately plays and >mates the white king. Again: this is a classic chess game which obeys >all of its rules (of course, I doubt anybody ever played like that >with white, but, well, we never know.. :-) ). > >Question: What are the complete moves of this short game ? It would be nice if we had a chess diagram. Have difficulty setting up with only 1 computer. Armagh
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