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There are -ALWAYS- threats to undefended pieces
Compiled by notyetagm
--*--

THERE ARE ALWAYS THREATS AGAINST UNDEFENDED PIECES!

Mamedyarov's horrible 8-move(!) loss to Kamsky at the Mainz Finet 960 Open.

Position after 8 ... ♘h4-g6!:


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White (Mamedyarov) cannot meet the simple threat to the <UNDEFENDED> White a1-knight of 9 ... ♗e4x♘a1 and so he resigned.

This is a -great- example of the Chernev/Reinfeld saying that <<<<There are always threats against undefended pieces>>>>.

Event "Mainz FiNet 960 Open"
Site "?"
Date "2007.??.??"
Round "6.1"
White "Mamedyarov, Shakhriyar"
Black "Kamsky, Gata"
Result "*"
Annotator "M/07-7-71 Rogers"
PlyCount "16"
FEN "


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" SetUp "1"

--------------
r k n b q r b n
p p p p p p p p
. . . . . . . .
. . . . . . . .
. . . . . . . .
. . . . . . . .
♙ ♙ ♙ ♙ ♙ ♙ ♙ ♙
♖ ♔ ♘ ♗ ♕ ♖ ♗ ♘
white to play
--------------
1. d4 f5 2. f3 Nd6 3. c3 Ng6 4. f4 Bd5 5. Qf2 e6 6. Bb3 Be4+ 7. Nd3 Nh4 8. g3 Ng6
*

With 33 ... ♕g6xe4?, Black lines up his <UNDEFENDED> Black e4-queen with the White e5-bishop. This alignment absolutely -provokes- the creation of a <DISCOVERED ATTACK> because White has the <DISCOVERY CHAIN> White e5-bishop + Black e4-queen (<UNDEFENDED>).


click for larger view

White then plays the excellent tactical sequence 34 ♕d1-d8+ ♔g8-f7 35 ♕d8-f6+ ♔f7-e8 (35 ... ♔f7-g8 36 ♕f6-g7#) 36 ♕f6-e6+!, shown below:


click for larger view

Now White has completed the <DISCOVERY CHAIN> White e6-queen (<PRINCIPAL ATTACKER>) + White e5-bishop (<DISCOVERER>) + Black e4-queen (<VICTIM>), and with <TEMPO> (<GAIN OF TIME>) to boot.

Wherever the Black e8-king moves to get out of check, a <DISCOVERY> from the White e5-bishop will win the <UNDEFENDED> Black e4-queen:

36 ... ♔e8-f8 37 ♗e5-g7+ ♔f8x♗g7 38 ♕e6x♕e4
36 ... ♔e8-d8 37 ♗e5-c7+ ♔d8x♗c7 38 ♕e6x♕e4

THERE ARE ALWAYS THREATS AGAINST UNDEFENDED PIECES!

Event "ICC 1 0"
Site "Internet Chess Club"
Date "2007.04.18"
Round "-"
White "LeonHoyos"
Black "CofC-Liu"
Result "1-0"
WhiteElo "2287"
BlackElo "2149"
ICCResult "Black resigns"
Opening "Sicilian: Anderssen variation"
ECO "B41"
NIC "SI.41"
Time "01:03:34"
TimeControl "60+0"

1. e4 c5 2. d4 e6 3. Nf3 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Nxc6 bxc6 7. e5 Nd5 8. Ne4 Bb7 9. c4 Nb4 10. a3 Qa5 11. Bd2 Qxe5 12. f3 d5 13. Bc3 Qc7 14. axb4 dxe4 15. fxe4 Be7 16. Bd3 O-O 17. O-O e5 18. Rf5 Bf6 19. Rxf6 gxf6 20. Qg4+ Kh8 21. Rf1 Qe7 22. Qh4 Rg8 23. Rxf6 Rad8 24. Bf1 Rd1 25. Qf2 Rg7 26. Rf5 f6 27. Rxf6 Kg8 28. Bxe5 Rf7 29. Qg3+ Rg7 30. Qf4 Rf7 31. Rxf7 Qxf7 32. Qg4+ Qg6 33. Qxd1 Qxe4 34. Qd8+ Kf7 35. Qf6+ Ke8 36. Qe6+ 1-0

Undefended White d2-rook + Black b4-pawn = DISCOVERY
Anand vs Judit Polgar, 2003 
(B90) Sicilian, Najdorf, 39 moves, 0-1

Undefended Black c5-queen + White d6-rook = DISCOVERY
Kasparov vs Shirov, 2000 
(C11) French, 35 moves, 1-0

Undefended Black e2-rook + h5 tactical base = FORK
Leko vs Kramnik, 2007 
(C78) Ruy Lopez, 49 moves, 1-0

Undefended Black d2-rook + Black d7-knight = PIN
Capablanca vs H Steiner, 1928 
(D67) Queen's Gambit Declined, Orthodox Defense, Bd3 line, 37 moves, 1-0

Undefended Black g5-queen + Black e3-rook = PIN
Rubinstein vs Lasker, 1909  
(D30) Queen's Gambit Declined, 40 moves, 1-0

Undefended White d7-rook + Black d5-knight = DISCOVERY
Alekhine vs Lasker, 1914 
(C68) Ruy Lopez, Exchange, 89 moves, 0-1

Undefended Black a2-queen + White b2-bishop = DISCOVERY
Leko vs Karpov, 2002 
(B17) Caro-Kann, Steinitz Variation, 55 moves, 0-1

Undefended Black c7-queen + Black c6-knight = PIN
Carlsen vs Ivanchuk, 2007 
(D86) Grunfeld, Exchange, 35 moves, 1-0

Undefended White d2-queen + Black f4-knight = DISCOVERY
Dolmatov vs Yusupov, 1982 
(C50) Giuoco Piano, 21 moves, 0-1

Undefended Black b7-bishop + Black d5-knight = 10 Qc2-d4! pin
Karjakin vs F Bindrich, 2007 
(E17) Queen's Indian, 14 moves, 1-0

37 ... Rxd4? lines up d4-rook with undefended a7-queen, pin
Aronian vs Kramnik, 2007 
(D45) Queen's Gambit Declined Semi-Slav, 43 moves, 1-0

78 ... Be7xc5+!! undefended White a8-queen, discovered attack
Adams vs Carlsen, 2007 
(C96) Ruy Lopez, Closed, 83 moves, 1/2-1/2

18 ,,, Ng6xe5! undefended White e4-knight,e3-bishop cost a pawn
Radjabov vs Topalov, 2008 
(C67) Ruy Lopez, 41 moves, 1/2-1/2

14 ... Ng4xe3! is made possible by undefended White c3-knight
Aronian vs Radjabov, 2008 
(E61) King's Indian, 24 moves, 1/2-1/2

22 Rf1-a1?? Bh6xe3! made possible by undefended White d2-knight
Korchnoi vs Fischer, 1962 
(E62) King's Indian, Fianchetto, 44 moves, 0-1

Innocent 19 Qd2-e3 threatens skewer of undefended h5-knight
Jakovenko vs Bologan, 2008 
(D47) Queen's Gambit Declined Semi-Slav, 34 moves, 1-0

19 Kg1-h1!: Black threatened ... Nc4-d4! against undef a6-rook
Fischer vs Smyslov, 1965 
(C77) Ruy Lopez, 43 moves, 1-0

28 Rd3xBd5! made possible by the undefended Black g3-bishop
Y Shulman vs Van Wely, 2009 
(D44) Queen's Gambit Declined Semi-Slav, 32 moves, 1-0

38 ... Nb5xc3! made possible by the undefended White c2-knight
S Shankland vs Ehlvest, 2009 
(B09) Pirc, Austrian Attack, 39 moves, 1/2-1/2

31 Rd4xNe4! Black d5-pawn pinned to undefended Black h5-rook
Morozevich vs Gelfand, 2009 
(C24) Bishop's Opening, 31 moves, 1-0

36 ... Rf2-d2? undefended Black f2-rook allows 37 Rc6-g6! +-
Aronian vs A Istratescu, 2009 
(A29) English, Four Knights, Kingside Fianchetto, 40 moves, 1-0

16 ... Nb6-c4!? attemtps to open b-file to undefended b2-bishop
Ponomariov vs Anand, 2009 
(D71) Neo-Grunfeld, 34 moves, 1/2-1/2

27 Qh4xNh5! only possible due to the undefended Black c7-queen
Lahno vs N A Malmdin, 2007 
(B01) Scandinavian, 27 moves, 1-0

Ding Liren vs G Meier, 2012 
(D39) Queen's Gambit Declined, Ragozin, Vienna Variation, 46 moves, 1-0

24 games

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