Piece Power

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This is the name of a book written by Peter Wells in 1994. It is no longer in print but there are some second hand copies still in circulation.

It was published by Batsford as part of their Think Like a Chess Master series.

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Piece Power is the name of an out of print book written by Grandmaster Peter Wells.

It is a short book, just 109 pages, making it an easy read. It is filled with examples from Grandmaster games.

Here I am showing you the games from Chapter 1 - Bishop Power:

https://www.chess.com/games/view/209235

https://www.chess.com/openings/French-Defense-Tarrasch-Closed-Main-Line...10.O-O-Bd6-11.Nf3-Qb6-12.Nc3

This is one of the most perfect games I have seen in respect to having moves played almost exactly like Stockfish plays them. Karpov is rated 99.5% CAPS (Hort 95.3%)

Looking at moves 28 onwards. White has a 'good' bishop whereas Black has a 'bad' bishop. This is the main difference between the two sides and results in a win for White.

Moves 28.f3 through to 33...Nd7 are all the best computer moves

Wells credits Karpov's move 32. b4! noting that it 'fixes' the a-pawn on the a6 square ensuring:

1. That it remains backward

2. That black's bishop remains 'bad'.

34.f4 is rated by Analysis as Excellent, and 34...Nf8 as good with Nb6 calculated as Best.

Wells also say Hort's move 36...Ne6 is a serious mistake, because it simplifies White's strategic goal.

The stockfish engine agrees with Wells that 36...Ne6 is a mistake.

Wells also credits Karpov's bishop move 42.Bb3! saying Karpov's best games read like an instruction book.

By 44.Bf3! we reach zugswang.

Note that when Black resigns, the material count is exactly even!

Wells suggests the game could have continued 45...Be6 46. Bxe6 Kxe6 47. g4! Kd6 48. a3!

The computer calculates 45. Bg4 Kc7 46. a3 Kd6 47. Bc8 Kc6 48. Ke5 Kb6 49. Bg4 a5 50. Bf3 axb4 51.axb4 Kc6 52. g3 Bg8 53. Kf6

Then the book looks at a specific position from Alekhine - Teichmann, Berlin GER, rd 4, Jun-08 1921 Spanish Game: Open Variations. Classical Defense

Looking at move 27, Wells asks

Q: "Who stands better and why?" and

Q: "What should Black play?"

The answer is White stands better despite being a pawn down, because of his superior bishop in conjunction with White's mobile Queenside pawn majority.

Black should play 27...e4+!

The full game is here: https://www.chess.com/games/view/14474

Wells also discusses Sherwin v Fischer, 1966

He credits Fischer for his knight and bishop moves

30...Bc7!
33...Nxe4!
36...Nf6!
37...Bd8!
44...Bf4!

This chapter also features the games

At move 35, Wells asks:

Q. How did Tal brilliantly reveal the weakness of Black's pawn chain?

Clue: Do not be afraid to sacrifice material, but if you just want to capture twice on e5 with the white knights, be aware that this will let Black's queen back into the defence.

And Fischer - Petrosian in the Candidate tournament in Buenos Aires in 1971

16. Bc5! exchanges off Black's 'good' bishop and emphasizes White's control of the dark squares.

At 43.a4 Wells says White's position is clearly preferable due to more active rook and his well posted bishop on e5. He gives advice from Mark Dvoretsky for White to play:

1) h3-h4

2) Exchange pawns on e4

3) The spendidly counter-intuitive g2-g3!!

4) Be5-f4, followed by marching the king over the queenside via c2, b3, c4 and b5.

The next examples of strong bishops are

D.Gurevich-Micheal Adams, Biel IZ 1993

Lobron-Portisch, Wijk aan Zee 1985

K.Arkell-Ward, British Ch (Dundee) 1993

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Dmitry Gurevich - Micheal Adams
Biel IZ 1993
Catalan Opening

https://www.chess.com/openings/Catalan-Opening-Closed...5.Nf3-Nc6-6.O-O-Rb8 

Wells says 9.a4 may have been a better move, and says 9...e5 is a strong move.

Stockfish says 9.Nfd2 is the best move, and 9...e5 is also the best move.

9.a4 is rated only as a good move, but if 7.a4 were played that would be best.

According to Stockfish if White plays 9.a4 than Black should play 9...b6

After 12...b5! it is the best move for White to sacrifice his knight with 13.Nc3 

 

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Eric Lobron - Lajos Portisch
Wijk aan Zee (Netherlands) 1985
Ruy Lopez, Morphy Defense

Wells says 13...d5? is a premature attempt to free Black's game.

18...f6?!

After move 18, Wells says the white pawn on e5 is very strong and cuts the black position in half.

Question: (After move 19) How did White use his remaining bishop's excellent diagonal to first weaken the black king's side, and then build an attack?

The answer to this question is moves 20 onwards.

K.Arkell - Ward British Ch (Dundee) 1993 - did not find online

Book shows up to move 16 then asks "Can you find White's two-stage plan to attain a decisive superiority on the dark squares?"

 

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The book looks at the first 15 moves from this game.

Wells annotates 9.Bh4? c5! cutting out any ideas White may have to play d3-d4.

10 Nd5?

White must try 10.Bxf6 and hope that the relatively blocked nature of the play will favour the knights (the computer say Bxf6 is an inaccuracy, Nd5 is good and that 10.a4 is Best)

10...g5! 11.Nxf6+

The sacrifice 11.Nxg5 hxg5 12.Bxg5 cannot be dangerous when Black will simply break the pin with ...Be7

After move 15 Wells says "and its goodnight from the bishop on g3, while Black's 'bad' bishop on d6 can be improved. Black's advantage is already decisive."

The computer only evaluates the position as half a pawn better for Black at this point, but Black is winning nevertheless.