# Chess

That convenient little table of piece values that we all learn as beginners - pawn = 1, knight or bishop = 3, rook = 5, queen = 9 - can lead to a good deal of confusion. Particularly where material is unbalanced but nominally equal, these figures should be regarded as only an approximation. Piece values are far from absolute; they change as the game progresses.

Today's game offers an example of one of the most unequal fair exchanges, that of two minor pieces for a rook and a pawn or two. While a rook and a pawn may be a match for bishop and knight in an endgame (especially if the pawn is passed, and the minor pieces have no stable squares in the centre of the board), you generally need at least a rook and two pawns to match two minor pieces in the middlegame, for the simple reason that rooks need open lines if they are to function to their full effect.

In this game, White's combination just after the opening led to a position in which he had rook and three pawns for two pieces, but several of his moves then suggested that he was taken in by the fact that 5+3 is so much bigger than 3+3. White's 16.c5, 19.h4, 20.Bxc6 and 21.f3 were all poor moves, contriving to create a position in which White's pawn structure became too rigid. Instead, he should have been playing to open the game with f4, (as the game went, 19.f4! would have been much better for White) then get his centre pawns moving.

Black took advantage of all this to build up a K-side attack, culminating in 33...Nxg3! when 34.Rxg3 Rxh4+! 35.Kxh4 Qh6 is mate.

White: Simon Williams

Black: James Cobb

1 c4 e5 21 f3 Kh7

2 Nc3 Nf6 22 Kh2 Rg8

3 Nf3 Nc6 23 Qd2 Nh5

4 g3 Bc5 24 Rg1 f6

5 Bg2 d6 25 Rac1 Be8

6 d3 0-0 26 e3 f5

7 0-0 a6 27 d4 e4

8 Bg5 h6 28 f4 Nf6

9 Bh4 g5 29 Rc3 Bh5

10 Nxg5 hxg5 30 Kg2 Bf3+

11 Bxg5 d5 31 Kh3 Rg4

12 Nxd5 Be7 32 Ra3 Nh5

13 Nxe7+ Qxe7 33 Qe1 Nxg3

14 Qd2 Qd6 34 Qa5 Qh6

15 Bh6 Bf5 35 Qxc7+ Rg7

16 c5 Qe7 36 Qd8 Qg6

17 Qg5+ Bg6 37 Qg5 Qf7

18 Bxf8 Rxf8 38 Qd8 Qh5

19 h4 Qe6 39 Rc3 Qg4+

20 Bxc6 bxc6 40 Kh2 Nf1+

White resigned

News

news
News

### JK Rowling horrified by Harry Potter actor's raunchy photoshoot

people
Arts and Entertainment

tv
News

media
Life and Style

### A History of The Great War in 100 Moments

ebookNow available in paperback
Voices

### 'As a white man, I'm surprised more women aren't tweeting #KillAllWhiteMen'

voices It's ironic, funny and thought-provoking, says Max Benwell
Arts and Entertainment

### So, did Mad Men go out with a bang – or a whimper?

TV
Arts and Entertainment

### Everything you need to know about Eurovision

tv
Arts and Entertainment

### 'Wooing women' at Cannes: but did it work?

film
Arts and Entertainment

### Beyonce angers fans by wasting \$20,000 Champagne 'while people are starving in the world'

music
Arts and Entertainment

tv
Sport

### Does De Gea really want to fight it out for the No 1 spot at Real Madrid?

footballPaul Scholes offers a few words of caution about a potential switch
News

people
Life and Style

tech
News

### Coleen Nolan faces sacking calls after 'vile' comments comparing gay marriage support to Isis

people
Arts and Entertainment

### Visceral brilliance sets Gasper Noé drama apart from standard porn

film Review: Love, at Cannes
Life and Style

### Middle class crisis looms amid warning of 'global prosecco shortage'

food + drinkFirst olive oil and now this...

### Dior and I: an artful argument for a new couture

##### Independent Dating
and

By clicking 'Search' you
are agreeing to our

### Ashdown Group: UI Developer - (UI, HTML, CSS, JavaScript, AngularJS)

£25000 - £40000 per annum: Ashdown Group: UI Developer - (UI, JavaScript, HTML...

### Ashdown Group: Graduate UI Developer - HTML, CSS, Javascript

£25000 - £30000 per annum: Ashdown Group: Graduate UI Application Developer - ...

### Ashdown Group: B2B Marketing Manager - Events, Digital, Offline

£45000 - £50000 per annum: Ashdown Group: B2B Marketing Manager (Events, Digit...

### Guru Careers: Senior Account Manager / SAM

£30 - 35k: Guru Careers: A Senior Account Manager / SAM is needed to join the ...

## Is a quiet crusade to reform executive pay bearing fruit?

Dominic Rossi of Fidelity says his pressure on business to control rewards is working. But why aren’t other fund managers helping?

## King David Hotel: Palestinians not included

The King David is special to Jerusalem. Nick Kochan checked in and discovered it has some special arrangements, too

## End of the Aussie brain drain

More people moving from Australia to New Zealand than in the other direction for first time in 24 years

## Can meditation be bad for you?

Researching a mass murder, Dr Miguel Farias discovered that, far from bringing inner peace, meditation can leave devotees in pieces

## Australia's first-ever Eurovision entrant

Australia, a nation of kitsch-worshippers, has always loved the Eurovision Song Contest. Maggie Alderson says it'll fit in fine

## Laughter, but no tears, as Letterman takes his bow after 33 years

Veteran talkshow host steps down to plaudits from four presidents

## Hozier's 'blasphemous' song takes Novello award

Singer joins Ed Sheeran and Clean Bandit in celebration of the best in British and Irish music

## Join the tequila gold rush

The spirit has gone from a cheap shot to a multi-billion pound product

## 12 best statement wallpapers

Make an impact and transform a room with a conversation-starting pattern

## Paul Scholes column

Does David De Gea really want to leave Manchester United to fight it out for the No 1 spot at Real Madrid?

## The end of an era across the continent

It's time to say farewell to Klopp, Clement, Casillas and Xavi this weekend as they move on to pastures new, reports Pete Jenson

## 'Focus on killing American people'

Released Bin Laden documents reveal obsession with attacking United States

## Medécins Sans Frontières's life hacks

The innovations of volunteers and medical workers around the world are helping the charity save people

## Same-sex marriage

As date looms, the Irish ask - how would God vote?

## The Mafia is going freelance

Why the underworld model depicted in The Godfather is no longer viable