Paul et al,
Cunning effort with the 5-pints offer, but I suspect that we may be meeting
in round 3 on Saturday, which will mean, I will have to decline such a
generous temptation!
As pointed out subtlely, because of a certain momentous milestone in the
life of the Ross, when playing a local league match last night for my
Sheffield team, there was a lot of lubrication free-flowing.
Despite that minor inconvenience, I had the pleasure of having a superior
position against Sue Maroroa, a rising woman's International Master and wife
of, no less, Gawain Jones (ELO 2683), who I also had the pleasure of sitting
with to analyse our game afterwards. Having a near 2700 ELO player discuss,
analyse and evaluate a game during a post-mortem is a very enlightening
experience. Having him buy you a celebratory pint to finish off the evening
is just the clincher!
[Event "Sheffield League Matches 2018-2019"]
[Site "Sheffield, ENG"]
[Date "2018.11.12"]
[Round "5.1"]
[White "Ross, Chris"]
[Black "WIM Maroroa, Sue"]
[Result "1/2-1/2"]
[ECO "B07"]
[PlyCount "64"]
[EventDate "2018.11.12"]
[WhiteTeam "Darnall and Hansworth"]
[BlackTeam "Hillsborough"]
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 g6 6. d4 Bd7 7. O-O Bg7 8. Re1
h6
9. h3 Nf6 10. Nbd2 O-O 11. Bxc6 Bxc6 12. dxe5 Nh5 13. Nc4 Bb5 14. Na3 dxe5
15.
Nxb5 axb5 16. Qe2 c6 17. Be3 Qe7 18. Nd2 Nf4 19. Bxf4 exf4 20. Qg4 Be5 21.
a3
Rfd8 22. Rad1 Rd6 23. Nf3 Rad8 24. Rxd6 Qxd6 25. Nxe5 Qxe5 26. Qh4 Qg5 27.
Qxg5
hxg5 28. Kf1 Rd2 29. Re2 Rd1+ 30. Re1 Rd2 31. Re2 Rd1+ 32. Re1 Rd2 1/2-1/2
Cheers,
Chris
-----Original Message-----
From: usbca_chess-bounce@xxxxxxxxxxxxx
[mailto:usbca_chess-bounce@xxxxxxxxxxxxx] On Behalf Of Paul Benson
Sent: 13 November 2018 02:12
To: US BCA <usbca_chess@xxxxxxxxxxxxx>
Subject: [usbca_chess] Re: Skype Coaching Notes - 28 October 2018 - Petroff
Defence, Nimzowitsch Attack, C42
Hi Chris and all,
There was a good reason why only 4 games made it into the references.
It is because the limited database consulted only had 4 games with black
playing, 9. ... Bxa2.
Had your game been included in the database then it would have been
circulated along with the others.
Perhaps the conclusion that, 9. ... Bxa2, is unsound can be determined from
the following logic:
Caruana permits the capture, Ponomariov declines the offer.
With their average Elo being more than 2800, we must assume they each
believe that black capturing on a2 would be heading for a lost game for
black.
That is great for 2800+ Grand Masters, but lesser mortals, especially those
below 1800, could find themselves embroiled in complexities of, "Punch And
Duck", leading to results likely to distort the database statistics.
Hence no conclusion was offered in my notes, but instead games offered where
a variety of ideas on both sides were tried, giving the student a chance to
sift the proverbial wheat and chaff.
Please, if the disappointment is still there, may I offer a couple of
variations to improve the position?
(A). On both Saturday and Sunday lunchtimes at the forthcoming BCA Derby
tournament, there shall be 5 pints of the best bitter en prise, just
announce your wish to capture them.
(B). On Saturday evening there shall be 2 pints of best bitter en prise, 1
for making the effort to solve the dilemma for some over whether to play, 9.
... Bxa2, and 1 for making a time-control today, more usually reported
elsewhere by Radio Cheltenham.
Paul Benson.
-----Original Message-----
From: Chris Ross - Email Address: c.ross@xxxxxxxxxxxxxxxxxxx Sent On:
11/11/2018 23:32 Sent To: usbca_chess@xxxxxxxxxxxxx - Email Address:
usbca_chess@xxxxxxxxxxxxx
Subject: [usbca_chess] Re: Skype Coaching Notes - 28 October 2018 - Petroff
Defence, Nimzowitsch Attack, C42
Paul et al,
Slightly disappointed that my final round victory at the Weihnachtsopen
(Zurich, Switzerland) back in 2011 wasn't cited in the references!
I recall when playing the game that black wasn't meant to be able to take on
a2, but when my opponent blasted it out, it took me by surprise and I had
one of those moments of doubts. But as GM Neil McDonald has drummed into me,
if a player comes out with a tactic or variation that isn't in the main line
and not played by the top players of the world, then, ultimately, there must
be something wrong with it. So, sit and take the time and calculate over the
board. Spend that time and once figured out, you can equally blast out the
refutation.
Here's my bit for the theory...
[Event "35th Weihnachstopen"]
[Site "Zurich, SWI"]
[Date "2011.12.30"]
[Round "7"]
[White "Ross, Chris"]
[Black "Lampert, Jonas"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "2237"]
[BlackElo "2147"]
[PlyCount "33"]
1. e4 e5
2. Nf3 Nf6
3. Nxe5 d6
4. Nf3 Nxe4
5. Nc3 Nxc3
6. dxc3 Be7
7. Be3 Nc6
8. Qd2 Be6
9. O-O-O Bxa2
10. b3 a5
11. Kb2 a4
12. Ra1 axb3
13. cxb3 Bxb3
14. Rxa8 Qxa8
15. Kxb3 Qa1
16. Kc2 Na5
17. Bb5+ 1-0
Cheers,
Chris
Subject: Skype Coaching Notes - 28 October 2018 - Petroff Defence,
Nimzowitsch Attack, C42
Skype coaching session, 28 October 2018.
The game discussed (41 moves) is given below with annotations and without
annotations plus 4 supplementary reference games.
Re-structuring of the sessions now offers the option for guests to bring
their own games for group discussion.
Recordings of some previous coaching sessions can be found at:
http://www.open-aurec.com/Skype/PaulBenson/PaulBenson.htm ;
Paul Benson.
* * *
White: F. Caruana, 2789.
Black: R. Ponomariov, 2723.
Event: Dortmund Sparkassen 2014.
Result: 1-0 in 41 moves.
Opening: Petroff Defence, Nimzowitsch Attack, C42.
1. e4 e5
2. Nf3 Nf6
| The Petroff Defence, solid, black usually gets on with piece
| development
before thinking about pushing pawns. ||
3. Nxe5
| The mainline which tends to create a fully-open e-file.
Instead, 3. Nc3, offers transpositions into any of the Three Knights, the
Four Knights, the Scotch Game, and probably a few more king-pawn systems.
There is also, 3. d4, again with opportunities for transpositions into other
king-pawn systems.
Next comes, 3. Bc4, this needs careful consideration before putting into the
repertoire, this system is very tactical, there are traps all over the
place, homework necessary if disappointment is to be avoided.
Lastly, the humble-looking, 3. d3, could be thought of as a, Philidor
Attack, with possibilities of guiding the game into a King's Indian Attack,
a neat trick for those not wishing to get bogged down in the oceans of
theory of the mainline. ||
3. ... d6
| Anyone new to the Petroff Defence should be aware that, 3. ... Nxe4 4.
Qe2, will give you headaches, do not recapture immediately on e4.
Gamblers might be attracted to the Stafford Variation which runs, 3. ... Nc6
4. Nxc6 dxc6, with the usual gambit argument of material invested against
initiative gained to follow.
Is this variation sound?
Probably not, but if white has not done the necessary homework and black
has, then who knows what horrors could hit white. ||
4. Nf3
| Again this is the mainline.
For those wishing to be a little different there is, 4. Nc4, to be
investigated, though black should be comfortable with a little homework.
Anyone wishing to express their Neanderthalic persona might check out the
Cochrane Gambit, 4. Nxf7, not quite as crazy as it looks.
A well-prepared white should generate an initiative, but if black is equally
well-prepared then do not expect too much for the sacrificed piece.
Lastly, for those seeking fresh fields there is, 4. Nd3, to be studied,
opportunities to be creative here and force your opponent to think for
themselves. ||
4. ... Nxe4
5. Nc3
| Most popular here is, 5. d4, then comes the game move, next is, Qe2
| (with
a very high prercentage of draws), next is, pawn c4, and last of the serious
tries is, pawn d3, which should transpose into an Exchange Variation of the
French Defence.
With, 5. Nc3, white is seeking a pawn-structure imbalance in exchange for
easy development with good coordination. ||
5. ... Nxc3
| Instead retreating with, 5. ... Nf6, is likely to end up with a
pawn-structure of the Exchange French after, 6. d4 d5, but note that black
will be a clear tempo down in such a transposition.
Also known here is, 5. ... d5, perhaps played in the hope of getting into
lines where white pushes, pawn d4.
Lastly, anyone interested in chess stories should investigate those flying
around the mystifying, 5. ... Bf5.
While there is much humour if the reported, "myths", are true, there is no
laughter for black here.
After, 5. ... Bf5 6. Qe2 Qe7 7. Nd5, this hurts black, Qd7 8. d3 c6 9. Nc3,
black is losing a piece due to the pin up the e-file. ||
6. dxc3
| White is now 3 moves away from completing castling queenside after
| which
the kingside campaign can begin, irrespective of where the black king
chooses to reside.
Black in turn will similarly develop quickly without making any threats in
the direction of white, interactions can be postponed until the middlegame
begins. ||
6. ... Be7
7. Be3 Nc6
8. Qd2 Be6
| That should scare white out of castling long as the a2 pawn would be
| en
prise. ||
9. O-O-O Qd7
| Snatching with, 9. ... Bxa2, loses a piece after, 10. b3 a5 11. Kb2 a4 12.
Kxa2, but after, 12. ... axb3+ 13. Kxb3, matters are far from clear.
Black will achieve considerable activity up the a-file with, Ra5, and, Qa8,
the white king needs defensive support, and the quicker the better.
Announcing judgement here without consulting Fritz and friends seems
somewhat risky.
So instead as a rare treat there are 4 reference games given as part 3 of
this email, showing how difficult it can be for the defender to work out
over the board. ||
10. Kb1
| It is often sensible to spend a tempo removing the king from the c1 -
| h6
diagonal, this shuffle means there can be no random checks by black
disrupting the flow of any future kingside activities. ||
10. ... Bf6
| The non-interaction continues, this trench warfare cannot last much
longer, someone is going to have to poke their head above the parapet soon.
||
11. h3
| Is this pawn push designed to prevent an annoying, Bg4, pin?
No, it is the start of a kingside campaign designed to claim space, post a
few units as actively as the position permits, then open up a line or two,
finally shuffling pieces attempting to catch out the black defenders lack of
mobility when trying to guard weaknesses - Easier said than done. ||
11. ... h6
| Since white is signalling the advance, pawn g4, this black pawn
| advance is
designed to prevent a white dynamic, pawn g5, push.
Fine, but surely a pawn on h6 is going to be a big target when black castles
kingside?
Yes, it would be a big target,but who said black is castling kingside? ||
12. b3
| Taking control of the c4 square, which indicates white is planning a
future for the f1 bishop somewhere other than on the f1 - a6 diagonal. ||
12. ... a6
13. g4
| Sure, this constitutes kingside activity, but just how further can
| this
pawn go as part of the plan?
The answer is that the g-pawn is not yet ready to be the key to the kingside
play, reinforcements are required, which points to the f2 pawn, meaning the
white f3 knight needs to move, such is the birthing-process of a plan. ||
13. ... O-O-O
14. Bg2 g5
| Black adopts the policy of preventing white playing, pawn g5, by
| occupying
the square himself.
This attempt to stop dynamic kingside play cannot really succeed, white
always has the lever of, pawn f4, in reserve.
It seems black is content to sit there and absorb whatever pressure white
can mount, perhaps Grand Masters can do this satisfactorily, but club
players should think of being a little more adventurous, giving the opponent
the occasional awkward strategic/tactical question to answer. ||
15. Nd4 Nxd4
| Black chooses not to permit white the option to gain the bishop pair
| with,
Nxe6, but as the game goes, this is not the end of problems the black light
square bishop is going to experience.
Such an exchange on e6 would offer the white bishops good play, it is all
due to the pawn formations.
White would be able to advance on either side of the board as the endgame
approaches with the intention of breaking up the black pawn formation,
isolated pawns and knights do not look after each other at all. ||
16. cxd4
| A tripler.
Firstly, the white pawn formation has been cleaned up.
Secondly, there is the little white threat of, pawn d5, trapping the
flightless black e6 bishop.
Thirdly, a pawn on d4 offers support to any white piece able to land on the
e5 square should the black d-pawn advance. ||
16. ... d5
17. f4 gxf4
| Forced as white was threatening, 18. f5, trapping the miserable black
| e6
bishop.
The game now becomes a battle of bishop pairs.
Bishops love to sit in their own half of the board while sniping at opposing
units away in the distance, as players who regularly fianchetto a bishop or
two will readily confirm.
Such arrangements permit the bishop flexibility of movement while whatever
opposing units are defending must take great care if they choose to abandon
their posts.
Bearing this in mind, it seems pawn structures across the entire board
influence the effectiveness of bishops.
The next few white moves on the kingside are designed to offer opportunities
for the bishops to contribute in their own small way.
Once the bishops reach their optimal locations, focus will switch to finding
satisfaction for the white rooks. ||
18. Bxf4
| Lining up a double-attack on the black h6 pawn, should black defend it
| or
move it? ||
18. ... h5
| Activity rather than passivity.
The advance of the black h-pawn moves the target while turning the white g4
pawn into a triply-attacked target. ||
19. g5
| Clearly white rejects, 19. gxh5 Rxh5, when 3 white units will be tied
| down
to defending the triply-attacked h3 pawn.
Having put the g-pawn onto a dark square then the activity of the white e3
bishop and d2 queen have become limited, observe how white now sets about
regaining some activity for these units. ||
19. ... Bg7
20. Rde1
| This needed careful consideration.
The positive is easy to appreciate, white is planning, Be5, when if black
trades with, Bxe5, the e1 rook can begin the process of doubling on the
fully-open e-file with, Rxe5.
The negative is that black has been allowed a move which fixes mutual
targets on the kingside.
Instead, 20. h4 Bg4, and while the g5 pawn is secure, the black light square
bishop has found some activity, meaning white at some point is likely feel
the need to trade the light square bishops off.
Such a trade would make life easier for black, at the moment the black light
square bishop has little activity, being restricted by the f7 and d5 pawns.
||
20. ... h4
| And the kingside becomes fixed.
In time the white g5 pawn could become a target, but black must also be
careful to look after the h4 pawn. ||
21. Be5 Rdg8
| Instead, 21. ... Bf5, intending to drop back with, Bg6, was worth
consideration.
On g6 the black light square bishop would be targeting the white c2 pawn,
but then again on e6 it is tying white down to defending the h3 pawn -
Swings and Roundabouts?
By transferring the d8 rook to g8 black is indicating a wish to bring
pressure onto the white g5 pawn. ||
22. Qf4
| White has made progress on the dark squares, the bishop on e5
| neutralises
the black g7 bishop, there is a double-attack on the black c7 pawn, and the
black f7 pawn is now in need of either direct or indirect defence. ||
22. ... Qd8
| A doubler.
Firstly, when black played, Rdg8, the d8 square was vacated for someone
else, the pressure on g5 is slowly increasing, white must now be aware of
black trading bishops on e5, followed by, Rh5.
Secondly, when a unit moves files / ranks / diagonals become clear for
someone else to use them.
Here black, Qd8, is part of a plan to give the e6 bishop a retreat square.
||
23. Bf1
| Having gone as far as possible on the dark squares, white now switches
over to working on the light squares.
The bishop is heading for d3 from where it could support some kingside play.
||
23. ... Kb8
| Pass!, black takes a move to organise a defensive set-up, this king
shuffle vacates the c8 square for an e6 bishop retreat. ||
24. Bd3 Bc8
| Hang on there, was it not the task of the bishop on e6 to protect the
| f7
pawn?
Surely white can simply play, 25. Qxf7, winning a pawn? ||
25. Kb2
| White has no immediate plan and so chooses a move which does no harm.
Black picks up on this strategy and decides there is a positive plan
available from his side of the board.
Fine, but by disturbing whatever peace there is, there is the possibility of
giving the opponent a plan which was not available before leaping into
action.
White rejects, 25. Qxf7 Qxg5, as the cramping g5 pawn is far more valuable
than the unmoved black f7 pawn. ||
25. ... Bxe5
| A clear case of, "Swings And Roundabouts".
The positive is that the g8 rook now places direct pressure on the white g5
pawn.
The negative is that a white rook is lifted to the 5th rank, halfway into a
possibility of doubling rooks on the e-file should white overprotect the h3
pawn.
Win something, lose something. ||
26. Rxe5 Rg7
| A doubler.
Firstly, this rook takes over the task of protecting the f7 pawn, which
allows the black c8 bishop options of movement on the c8 - h3 diagonal.
Secondly, the possibility of doubling rooks up the g-file ganging up on the
white g5 pawn is now available. ||
27. a4
| Now this is motivated by a different philosophy.
White still has no immediate plan of action and so takes a little queenside
space as preparation for the endgame. ||
27. ... a5
| Black chooses to claim some queenside space as well.
The alternative was, 27. ... b6, sitting and waiting for white to show
queenside ambitions, if there are any. ||
28. Ka2
| White is almost turning procrastination into an art form.
Or perhaps white is playing these, "Shufflers", quickly to put moves on the
scoresheet while keeping the essentials, that is the centre / kingside,
unaltered. ||
28. ... Ka7
| Anyone remember the song line: "Anything you can do, I can do better"?
Perhaps an overstatement of what black is doing, but it demonstrates the
point - Black is saying: "If you are not interested in playing for a win
with white, then I am content to take a draw with black." ||
29. Qd2
| White is still probing and prodding, the attack on the black a5 pawn
| is a
one-mover, there is no great strategy involved here.
Surely if this style of play continues with both players refusing to make a
serious commitment, then a draw by mutual passivity seems inevitable, right?
||
29. ... Kb8
| An interesting response.
Black is willing to offer the a5 pawn in return for the white g5 pawn. ||
30. Qf4
| White is not interested in offering black much kingside activity which
would arise after, 30. Qxa5 Rxg5.
Fine, but is there not now a hint of repetition in the air? ||
30. ... Ka7
| Over to you!
Are we heading for repetition with a quick handshake to follow?
White in the game to play and give the kingside some very serious
consideration. ||
31. Rhe1
| Clearly, 31. Qd2 Kb8 32. Qf4, indicating peaceful intention was still
available.
White is offering the h3 pawn to black, there must be a reason for such
generosity, but what? ||
31. ... Bxh3
| Black takes up the challenge.
Instead backing off with, 31. ... Be6, trying to keep the e-file closed
simply allows, 32. g6, after which white is threatening, fxg7, undermining
the black e6 bishop such that black must reply with, Bxf7, and white then
has the lift, Re7, black is beginning to be squeezed. ||
32. Rh1
| Aha, the rook returns home as part of the process of material
| equalisation
with the slight bonus of the white queen achieving an increase in activity.
||
32. ... Bc8
| Retreating all the way seems sensible.
Instead the apparently more active, 32. ... Qd7 33. Re3 Be6, leaves both the
black queen and bishop restricting each other.
Generalisation: When there is a queen and single bishop together think of
placing the queen on the opposite colour-complex to the bishop.
Of course there will be times when constructing a battery with queen and
bishop is beneficial.
It seems both ideas need to be in mind and a decision as to which
colour-complex the queen occupies must be made according to the demands of
the position. ||
33. Rxh4 Rxh4
| Black prefers to remove material while still forcing white to keep
sufficient defenders on the g5 pawn.
Instead, 33. ... Rhg8, would equally force white to maintain a defence on
the g5 pawn with, 34. Rh5, when the white heavy units seem to be somewhat
tied up. ||
34. Qxh4 b6
| More Swings And Roundabouts.
After, 34. ... b6, black has weakened the light squares around the king, but
since there is a light square bishop in the region perhaps this piece will
be sufficient to hold it together?
Instead, 34. ... c6, strengthens the d5 pawn but seems to weaken the dark
squares on the queenside.
Fine, but just how can white exploit such visual weaknesses?
In the game white is about to make a dangerous-looking queen incursion which
sets black a test. ||
35. Qh6 Rg8
36. Qc6 Be6
| Perhaps black was in time-trouble?
This natural-looking problem-solving tripler is just the sort of move to be
thrown in when analysis-time is limited.
Firstly, the f7 pawn is protected.
Secondly, the d5 pawn is over-protected.
Thirdly, the white e5 rook activity up the e-file is blocked.
Sometimes natural-looking positional moves turn out to be tactically flawed
as the game will demonstrate.
Instead, 36. ... Bb7 37. Qf6 Qxf6 38. gxf6 Kb8 39. Re7 Rf8, black is a
little tied up, white has a break with, pawn c4, the ending will be
unpleasant for black but should be defensible.
Black must avoid, 36. ... Rxg5 37. Rxg5 Qxg5 38. Qxc7+ Bb7 39. Qxf7, when we
expect Grand Master technique to make full use of the extra pawn and convert
this to a win. ||
37. g6
| Ever since, 24. Bd3, this dynamic thrust has been prevented by black,
| but
not now, and it is all due to the unfortunate placement of the black bishop
on e6. ||
37. ... Rg7
| Clearly, 37. ... fxg6 38. Rxe6, costing black a bishop will not
| happen. ||
38. gxf7 Bxf7
| So white seems to have given up a cramping g5 pawn for the unmoved
| black
f7 pawn, surely black has made gains in this trade?
If that was all that is happening then black is definitely getting the
better of the deal.
White in the game is to play and land a right shocker on black.
Clue: How many times have you said to yourself: "I can't play that move
because I will lose material." ||
39. Re7
| The crowd as one shout: "Hey white, you can't play that move because
| you
will lose material!"
True, black can take that rook with, Qxe7, if desired.
So what has the Grand Master found that the crowd has not?
Take as much time as you wish here, searching for and then finding the game
continuation will bring much satisfaction.
Clue: As unbelievable as it might seem, 39. Re7, sets off either serious
material-gain for white or a forcing mate in 3, depending on how black
replies. ||
39. ... Qxe7
| Black joins in with the spirit of the occasion and permits white to
| enjoy
the mate in 3 moves.
Unacceptance leads to a variety of less spectacular finishes as follows:
(A). If, 39. ... Be8 40. Rxg7 Bxc6, is not in the script, white has a big
improvement.
(B). Or if, 39. ... Be8 40. Rxe8 Qh4 41. Ra8+ mate.
(C). Or if, 39. ... Be8 40. Rxe8 Qxe8 41. Qxe8, spoils the immediate fun,
white has to settle for a decisive material plus.
(D). Or if, 39. ... Qb8 40. Rxc7+ Qb7 41. Qxb7+ mate.
(E). Or if, 39. ... Qa8 40. Rxc7+ Kb8 41. Rc8+ Ka7 42. Rxa8+ mate.
(F). Or if, 39. ... Kb8 40. Ba6, and nothing other than, 40. ... Qc8,
prevents an immediate mate on b7, but simply, 41. Bxc8 Kxc8 42. Qxc7+ mate
would follow.
Retro-advice suggests black should have kept the light square bishop over on
the queenside.
So, where is this forced mate in 2 moves for white?
Clue: When a unit moves squares previously guarded lose protection, what is
the difference between a black queen on e7 rather than on d8? ||
40. Ba6
| Aha, surely this bishop was placed on d3 to fight on the kingside, right?
Yes, but matters changed on the queenside when black played, pawn b6, an
advance which could have permitted, Bb7, fighting for those exposed light
squares, but the black c8 bishop instead went on an unfortunate kingside
walkabout. ||
40. ... Kxa6
| The only way to prevent, Qb7+ mate. ||
41. Qa8+ mate
1-0
| A rarity indeed, a Grand Master permits checkmate.
Now we have the answer to the question about the locations of the black
queen, e7 or d8.
On d8 the black back rank was guarded, on e7 the a8 square is unguarded, it
is this difference which motivates white to think about playing the,
"Unplayable", 39. Re7, setting up a deflection of the black queen. ||
* * *
White: F. Caruana, 2789.
Black: R. Ponomariov, 2723.
Event: Dortmund Sparkassen 2014.
Result: 1-0 in 41 moves.
Opening: Petroff Defence, Nimzowitsch Attack, C42.
1. e4 e5
2. Nf3 Nf6
3. Nxe5 d6
4. Nf3 Nxe4
5. Nc3 Nxc3
6. dxc3 Be7
7. Be3 Nc6
8. Qd2 Be6
9. O-O-O Qd7
10. Kb1 Bf6
11. h3 h6
12. b3 a6
13. g4 O-O-O
14. Bg2 g5
15. Nd4 Nxd4
16. cxd4 d5
17. f4 gxf4
18. Bxf4 h5
19. g5 Bg7
20. Rde1 h4
21. Be5 Rdg8
22. Qf4 Qd8
23. Bf1 Kb8
24. Bd3 Bc8
25. Kb2 Bxe5
26. Rxe5 Rg7
27. a4 a5
28. Ka2 Ka7
29. Qd2 Kb8
30. Qf4 Ka7
31. Rhe1 Bxh3
32. Rh1 Bc8
33. Rxh4 Rxh4
34. Qxh4 b6
35. Qh6 Rg8
36. Qc6 Be6
37. g6 Rg7
38. gxf7 Bxf7
39. Re7 Qxe7
40. Ba6 Kxa6
41. Qa8+ mate
1-0
* * *
4 Supplementary Reference Games where black plays, 9. ... Bxa2.
[Event "French Team Championship"]
[Site "Mulhouse FRA"]
[Date "2011.05.28"]
[EventDate "2011.05.26"]
[Round "3.5"]
[Result "0-1"]
[White "Christophe Philippe"]
[Black "Jean-Rene Koch"]
[ECO "C42"]
[WhiteElo "2422"]
[BlackElo "2476"]
[PlyCount "48"]
1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Nc6 7. Be3
Be7 8. Qd2 Be6 9. O-O-O Bxa2 10. b3 a5 11. Kb2 a4 12. Kxa2 axb3+ 13. Kxb3
Ra5 14. Kb2 Qa8 15. Rb1 O-O 16. Be2 d5 17. Kc1 Ra1 18. Qe1 d4 19. Nxd4 Nxd4
20. Bxd4 Bg5+ 21. Be3 Bxe3+ 22. fxe3 Rd8 23. Bd3 Rxd3 24. cxd3 Qa3+ 0-1
[Event "Asian Women Continental Chess Championship"] [Site "Ho Chi Minh"]
[Date "2012.05.12"] [EventDate "2012.05.05"] [Round "8"] [Result "1/2-1/2"]
[White "Batkhuyag Munguntuul"] [Black "Dulamsuren Yanjindulam"] [ECO "C42"]
[WhiteElo "2451"] [BlackElo "2214"] [PlyCount "104"]
1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Be3
Be6 8. Qd2 Nc6 9. O-O-O Bxa2 10. b3 a5 11. Kb2 a4 12. Ra1 axb3 13. cxb3 Bxb3
14. Rxa8 Qxa8 15. Kxb3 Qa1 16. Qc1 Na5+ 17. Kc2 Qa4+ 18. Kb1 O-O 19. Qc2 Nb3
20. Qa2 Qe4+ 21. Kb2 Nc5 22. Bxc5 dxc5 23. Qc4 Qg6 24. h4 Rb8 25. h5 Qd6 26.
Bd3 Bf6 27. Re1 b5 28. Qe4 g6 29. hxg6 hxg6 30. Kc2 Qb6 31. Ne5 Qa6 32. Kd2
c4 33. Nc6 Rb6 34. Qe8+ Kg7 35. Rh1 Bg5+ 36. Ke2 cxd3+ 37. Kf3 Rb8 38. Qe5+
Bf6 39. Nxb8 Qb7+ 40. Qe4 Qxb8 41. Qxd3 Qa8+ 42. Kg3 Qa3 43. Qxb5 Qxc3+ 44.
Kh2 Bd4 45. Qe2 c5 46. Rb1 Qa5 47. Rb7 Qd8 48. Qf3 Qh8+ 49. Kg1 Qe8 50. g3
Qe6 51. Kg2 Qa2 52. Rc7 Qe6 1/2-1/2
[Event "45th Biel Masters Open"]
[Site "Biel SUI"]
[Date "2012.07.27"]
[EventDate "2012.07.23"]
[Round "5"]
[Result "1-0"]
[White "Benjamin Bok"]
[Black "David Burnier"]
[ECO "C42"]
[WhiteElo "2512"]
[BlackElo "2315"]
[PlyCount "69"]
1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Nc6 7. Be3
Be7 8. Qd2 Be6 9. O-O-O Bxa2 10. b3 a5 11. Kb2 a4 12. Kxa2 axb3+ 13. Kxb3
Ra5 14. Kb2 Qa8 15. Qd3 d5 16. Kc1 d4 17. Nxd4 O-O 18. Nxc6 bxc6 19. Qe4 Re8
20. Kd2 Bf6 21. Qf4 Be5 22. Qh4 Bf6 23. Qh3 Rd5+ 24. Bd3 Bxc3+ 25. Ke2 g6
26. Qf3 Qa2 27. Kf1 c5 28. g3 Bd4 29. Bxd4 Rxd4 30. Kg2 Red8 31. Ra1 Qb2 32.
Rhb1 Qc3 33. Ra7 R4d7 34. Rbb7 c4 35. Rxc7 1-0
[Event "European Team Championship (Women)"] [Site "Reykjavik ISL"] [Date
"2015.11.16"] [EventDate "2015.11.13"] [Round "4.14"] [Result "0-1"] [White
"Angelina Fransson"] [Black "Gudlaug Thorsteinsdottir"] [ECO "C42"]
[WhiteElo "1980"] [BlackElo "2005"] [PlyCount "152"]
1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Be3
Nc6 8. Qd2 Be6 9. O-O-O Bxa2 10. b3 a5 11. Kb2 a4 12. Ra1 axb3 13. cxb3 Bxb3
14. Rxa8 Qxa8 15. Kxb3 Qa1 16. Qc1 Na5+ 17. Kc2 Qa4+ 18. Kd3 O-O 19. Ke2 Bf6
20. Ke1 Qb3 21. Nd4 Qa2 22. Bd3 c5 23. Ne2 Ra8 24. Qb1 Qxb1+ 25. Bxb1 Nc4
26. Kd1 b5 27. Kc2 Ra3 28. Bc1 Ra1 29. Bb2 Ra8 30. Ng3 Be5 31. Bc1 d5 32. f4
Bf6 33. Nh5 Be7 34. Kd3 g6 35. Ng3 Bf6 36. Bc2 Re8 37. Rf1 d4 38. Ne4 Bg7
39. cxd4 Bxd4 40. Bb3 Kg7 41. Ng5 Nd6 42. Bd5 Bf6 43. Ne4 c4+ 44. Ke3 Nf5+
45. Kf2 Bd4+ 46. Kf3 Rd8 47. Bc6 b4 48. g4 Ne7 49. Bb5 c3 50. Bc4 Rb8 51.
Rd1 Nc6 52. Bb3 Bb6 53. Be3 Na5 54. Bxf7 Bxe3 55. Rd7 Rb7 56. Rxb7 Nxb7 57.
Bb3 Bd4 58. Ke2 Na5 59. Bd1 b3 60. Kd3 c2 61. Bxc2 bxc2 62. Kxc2 h6 63. Kd3
Bb6 64. Ke2 Nb3 65. Kf3 Nd4+ 66. Ke3 Ne6+ 67. Kf3 Bc7 68. f5 Nd4+ 69. Ke3
gxf5 70. Kxd4 fxg4 71. Ng3 Bxg3 72. hxg3 Kg6 73. Ke5 Kg5 74. Ke4 h5 75. Ke3
h4 76. gxh4+ Kxh4 0-1
