News
About Natalia
Games
Our Team
Articles
Gallery
Chess Links
Play Chess
Pogonina's Chess Shop
Advertise
Contact Us

Highlights

 Follow Natalia on Twitter:

http://www.pogonina.com/images//nat%20twit.jpg

 
Please help Natalia promote chess by making a donation:



 

Link to Pogonina.com

Play chess at ChessOk

365Chess.com Biggest Online Chess Games Database





Check qyto.jp for Japanese bitcoin casinos.

Here you can find Swedish sites without license, Spelkonto utan licens.

Find new casinos at the brand new Online Casinos XYZ site with reviews and ratings of the best gambling sites for UK players.

Play the popular King Kong Cash slot machine at Slot Strike, the new slot site for UK players.

Grab the chance to win big with a high RTP on the goonies slot progressive jackpot.

Goodluckmate.com - made an easier way to find Skrill casinos

Nettikasinot.media lists the best online casinos for Finnish gamblers. For more information visit: https://www.nettikasinot.media/suomalaiset-kasinot/  

Sweden is now a regulated market, which means that as a player you can only play at casinos with a license. See all regulated
casinos in Sweden by Mr casinova.

To find the best casino in Norway take look at
norske casino at CasinoPiloten.

Find the best Norwegian casinobonus at NyeCasinoNorge.org.

Get exclusive access to a
huge range of free spins & no deposit casino offers with Spin Bonus.

Try the exhilarating new 20p Roulette game.
Play it online at thecasinodb and find casinos to play for real money.

Get the best casino bonus information with Casino Gorilla.

Chess games at Gametop

CasinoAdvisers.com For you that want to find online casino strategies, guides and a good casino bonus!

 
   More...


Polls
What's your FIDE rating?

What should Natalia do to make Pogonina.com more interesting for you?

Who is your favorite active top player?

Poker or chess: what do you like more?

What's the largest monetary chess prize you ever won?

How much time per day do you spend on chess-related activities?

Do you have a special chess mascot (pen, badge, toy, etc.)?

Which time control do you prefer for over-the-board tournaments?

The strongest women's chess team in the world is

What is the strongest national chess team in the world?

Will Magnus Carlsen's rating reach FIDE 2900?

Do you think you can become a GM?

Sunday Puzzle-51

User Rating: / 6
PoorBest 
Written by Administrator   
Sunday, 01 September 2013
Image
Puzzle courtesy of Barry R. Clarke, columnist for The Daily Telegraph and international puzzle expert
Check out his new book "Mathematical Puzzles and Curiosities" on Amazon


Bookmark and Share

Strange Signs

 

to A

to B

to C

to D

Sign A

X

20

19

17

Sign B

19

X

18

15

Sign C

19

18

X

20

Sign D

17

19

20

X


The table shows the distances (km) given on signposts at four villages A,B,C,D to their three neighboring villages. For example, at village B the signpost gives a distance of 19 km to village A. Each signpost has exactly three numbers on it. The trouble is, the signposts have been vandalized so that only one sign gives exactly three correct distances, one gives precisely two correct, one has exactly one correct and one has no correct distances. When the signpost is corrected, no distance between two villages is repeated between another pair of villages.

Can you state the number of correct distances on each sign?

 Related reading:

Sunday Puzzle-50
Sunday Puzzle-49
Sunday Puzzle-48
Sunday Puzzle-47
Sunday Puzzle-46
Sunday Puzzle-45
Sunday Puzzle-44
Sunday Puzzle-43
Sunday Puzzle-42

Sunday Puzzle-41
Sunday Puzzle-40
Sunday Puzzle-39
Sunday Puzzle-38
Sunday Puzzle-37
Sunday Puzzle-36
Sunday Puzzle-35
Sunday Puzzle-34
Sunday Puzzle-33
Sunday Puzzle-32
Sunday Puzzle-31
Sunday Puzzle-30
Sunday Puzzle-29
Sunday Puzzle-28
Sunday Puzzle-27

Sunday Puzzle-26
Sunday Puzzle-25
Sunday Puzle-24
Sunday Puzzle-23
Sunday Puzzle-22
Sunday Puzzle-21
Sunday Puzzle-20
Sunday Puzzle-19
Sunday Puzzle-18

Sunday Puzzle-17
Sunday Puzzle-16
Sunday Puzzle-15
Sunday Puzzle-14
Sunday Puzzle-13
Sunday Puzzle-12
Sunday Puzzle-11
Sunday Puzzle-10

Sunday Puzzle-9
Sunday Puzzle-8
Sunday Puzzle-7
Sunday Puzzle-6
Sunday Puzzle-5
Sunday Puzzle-4
Sunday Puzzle-3
Sunday Puzzle-2

Sunday Puzzle


Bookmark and Share



Comments (1)
1. Written by O_x on 17:49 01 2013 .
 
 
Luckily, agent x0 and 0x came and saw the signs. :p 
They knew that, for normal kinematics,the magnitude of distances AB=BA, 
BC= CB, CD=DC...etc 
"So, the table is wrong, it should have 6 different pair of numbers." said x0. 
"But why? How?!" asked 0x. 
"easy. Just find the sign that has 3 correct distances!", said x0. 
 
Then... 
FOR(A=TRUE) 
D=0; 
IF(B=2) 
C=1 is FALSE. 
ELSE 
C=2 is FALSE. 
=>FALSE 
 
FOR(C=TRUE) 
all signs have atleast 1 correct distance. 
=>FALSE 
 
FOR(D=TRUE) 
No sign can have 2 correct distances. 
=>FALSE 
 
FOR(B=TRUE) 
=>TRUE 
(signB has 3 correct distances) 
And 
The Table is: 
 
X. 19 17 16 
19 X. 18 15 
17 18 X. 20 
16 15 20 X. 
 
...why, some crazy dudes mustve changed two '9's to '6' and one '15' to 20. 
:p 
 
O_x
 

Write Comment
Name:
E-mail
Homepage
Title:
BBCode:Web AddressEmail AddressBold TextItalic TextUnderlined TextQuoteCodeOpen ListList ItemClose List
Comment:



Code:* Code

Last Updated ( Sunday, 01 September 2013 )
 
< Prev   Next >