Aberystwyth were facing more familiar opposition on Thursday 25th March when we played Aberystwyth University's A team in a hard-fought match. On top board Rudy van Kemenade got an edge against Owain Davies's Vienna Game when a brief flurry of middle-game tactics left the White pawns more vulnerable. Nevertheless there was still much work to be done in a hihg-quality game before Black secured the point. Adam Watkin-Jones played cautiously against Matthew Horhey, holding back the centre pawns and fianchettoing both bishops. Nevertheless Black managed to set an unexpected trap in the opening, to win the game after only a dozen moves. Tom Gunn's Sicilian against Kieran Judge led, as so often, to a position with the players attacking each other's kings on opposite sides of the board - unusually for this opening, though, it was Black castled on the queenside and White on the kingside. When the promising White attack ground to a halt, Black was able to break through on the other wing. Sam Holman's Austrian Attack against Gabriela Griffiths's Pirc ripped open the kingside in the approved fashion, but she defended staunchly, belying her lower rating, and the game was even for a long time. Black would probably have held out for a draw but for a mistake in time trouble. The result was 3-1 to the town side.
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1.e4e52.Nc3avoiding the Petroff-Bl's known specialism2.Nf3Nf63.Nxe5d64.Nf3Nxe45.d4d56.Bd3Be77.0-00-08.Nbd2Nf6Davies-Pinch,
Dyfed League 2020,1-02...Nc62...Nf6a3.f4b3.Bc4Nxe44.Qh5Nd65.Bb3Nc66.Nb5g67.Qf3f58.Qd5Qe79.Nxc7+Kd810.Nxa8b6The
Frankenstein-Dracula var, a number of Rudy's games with this are in the
databases- the earliest example though is Fuller-Van Kemenade, South African
Schools ch 1963,0-13.g3Bc54.Bg2h5another complex line- Jane
Richmond-Van Kemenade,Dyfed Open 2008,0-13...d54.fxe5Nxe4when Wh has5.Nf3or the Oxford var5.d33.g33.f4exf44.Nf3g5also played
at elite GM level3...Bc53...h5another GM line eg4.h3Bc54...h45.g4Nd46.d3Bb4Walker-Van Kemenade, Leeds League 1993,0-15.d3h46.g4Qf66...Nge77.Bg2d68.Be3Be6Toczek-Van Kemenade, S Wales Autumn
2017,1-07.Nf3Nd48.Nxd4Bxd49.Qe2c6L Cooper-Van Kemenade, Isle of
Man 2003,1-04.Bg2d65.Na45.Nge2maina65...Nge75.d3a66.Nd5Nge77.Be3Bxe38.fxe3h5Pogson-Van Kemenade, Huddersfield Summer,1985,
1/2-1/25...Bb66.Nxb6axb67.Ne2Nf67...f558% for Wh8.0-00-09.d4Bg49...exd410.Nxd4Bd711.b34-3-110.f3Bd711.d511.Be3
1.5-0.511...Ne7Bl was happy to see the centre closed, which usually
favours Ns rather than Bs. The position resembles a King's Indian , except
that Bl is missing the B at g7 (which can land up as a bad B.Wh, though, has
no possibility of the usual Q side play typical of normal King's Indians.12.Qd312.b3Ng613.Bb2Qc814.Rf2Qd815.Nc1Qe716.Nd3Ne817.Qe2f518.f4=Darpan-Shah,IND AICF ch blind, 2014,1-012.c4Stockfish13- though
here Wh does not have the early threat of c5 as in other King's Indian lines12.g4looked interesting to Bl, holding up f5Bb513.Rf2Bxe214.Qxe2Ng6Stockfish1312...Ne812...b513.Bg5c613...Ne814.Bxf6gxf615.dxc6Bxc616.Qd2d5=Stockfish1313.f4f514.fxe5dxe515.Bg5Nd615...h6is playable according to Stockfish13, as16.Bxe7Qxe717.exf5Nd618.g4Bb519.Qe3Bxe219...Qh420.Qxe2e4gives Bl play on the bl
squares, looks a bit suspicious to non-Engine eyes16.Qc3Bl had scarcely
looked at this, as this seems like a non-positional square for the Q, even
though she is pawn-hunting.16.Nc3looks natural- improving the position
of the N. Interestingly that lichess analysis has not offered any comments so
far, it only does so at move19 when the N does go to c3,16...Nxd5after
looking a various options for a while, there are some lines where a q side
pawn goes, but there looked to be good chances on a king side initiative if
that happened16...h617.Bd217.Bxe7Qxe718.Qxc7Rac818...b519.Qb6Ra620.Qf2Rc8-+Stockfish13 variant19.Qxb6Rxc2looked promising, &
Stockfish13 gives it as winning for Bl after20.Rf2fxe4-+17...Ra418.Qxe5Ng619.Qc3Nxe420.Qe3Re8=Stockfish13-is not one that Bl
considered16...Nxe417.Bxe4fxe418.Rxf8+Qxf819.Rf1Qe820.Bxe7Qxe721.Qxc7Rc822.d6Qe623.Qxb6Rxc224.Qd8+Qe825.Qxe8+Bxe826.Nc3Rxb227.Nxe4just looked murky, though Stockfish13 considers =16...Bb517.Qxe5Rf718.exf5just seemed to favour Wh, though Stockfish13 continuesh619.Bf4Nexf520.Qe6Bd721.Qg6Rf622.Qh5Nc423.d6Nfxd624.Qd5+24.Bd5+24...Kh825.Qd4=17.Qxe5looked best for Wh to break up Bl's
centre pawns17.exd5Qxg518.Qxc7Qe3+Stockfish1318...Qe719.Qxb6Rac8Bl's idea19.Kh1Qc5!20.Qxc520.Qxd7Rf721.Qe6Re8
wins Q for R & B20...bxc521.a3b5-+and despite equal material,
Stockfish13 gives Bl as winning22.Rfe117.Bxd8Nxc318.Nxc3Raxd8
though Wh has shed a pawn17...Qxg518.Qxd5+Kh819.Nc3a mistake-
lichess Stockfish13 first comment of the game19.exf5Bc619...Rxf5=20.Qb3Bxg221.Kxg2Qd222.Qd3Qxd323.cxd3Nxf524.Kg1=Kg825.Nc3Rad8both Engines, though Wh will have to nurse the d3 pawn19...Qe3+20.Kh1labelled inaccuracy by lichess20.Rf2is a little bit better, but is
is very difficult working out whyfxe421.Qd2Qxf2+22.Qxf2Rxf223.Kxf2Bc6-+Stockfish1320...Bc6lichess analysis calls this a blunder
(apparently the only inaccuracy by Bl in the game)20...fxe4would be
winning it seems- recapturing the pawn for Wh is not as straight forward as
one would expect, mainly because of the delayed ...Bc6 move21.Qd3Qxd321...Qc522.exf5Nxf5preferred by Stockfish13, but is just level- with the
text Wh is left with an isolated pawn that obstructs his B22.cxd3fxe423.dxe4Kg824.b34th choice Stockfish13, still =. However Bl thought this
weakened the a pawn, and put another pawn on a wh square, considering24.a3=as better24.Kg1improving the K position like Bl did first choice
Stockfish1324...Rae825.Rxf8+Kxf826.Re126.Kg1Stockfish13Ke727.Kf2b528.Rc1Nf729.Ke3b430.Ne2Nd631.g4Kf631...Kd732.Ng3Nb533.Rc2Nc334.g5Kd635.Nf5+Ke536.Nxg7Rg837.Nf5Rxg538.Nd4Rg6=32.Ng3== does not mean draw here, rather that both sides have chances as
there is still quite a bit of play left26...b5seeing if Wh will play
a3, when the R has a target- after Ra8, Ra1 b4 comes26...Re527.b4Nb528.Nxb5Bxb529.Kg1Re830.Rc1c631.Rd1Ke7Stockfish1327.Rf1+Nf727...Ke7Bl's first idea is a little better28.e5Nf729.Bxc6bxc630.a4bxa431.Nxa431.bxa4Ra831...Nxe532.Re1Ke6Stockfish1328.b4labelled an inaccuracy by lichess28.Nd5Bxd5is what Rudy would have
played, and given by Stockfish13 here28...Ra829.e5Re830.Nxc7Rxe531.Bxc6bxc632.Rc1Nd833.a4bxa434.bxa4Ke7=lichess Stockfish13-though
the Bl K is still far better than its rival and could tip the edge on the Q
side-Wh needs the defensive precision that Engines take for granted35.Na6Ra536.Nb4Kd637.Rd1+Kc537...Kc7?38.Rxd8Rxa439.Rd4c540.Nd5++-38.Nd3+38.Rxd8Kxb438...Kc439.Nf4Ra840.Kg2g541.Nd3c542.Kf3Nc643.Kg4Nb444.Ne5+Kb345.Kxg5Rxa4=Wh's simplest course
here is to give up the N for the c pawn , leaving Bl with R & N vs R29.exd5Re729...Ke7Rudy30.Re1+Kd831.Rxe8+Kxe832.Be4h6with hopes that
d5 stil obstructs the B & needs defending, eg33.Kg2Ke734.Kf3Kf634...Kd635.Kf4Kc5is far from clear- the Engine sarts playing fancy moves36.Bg6Nh837.Be8Kxd537...b438.Ke5+-38.Bxb5Ng6+39.Ke3Ke540.Be2=and with d5 exchanged the B is now a little better than the N, but Bl has
a better K position35.Kf4b436.Bd3Nd637.Bc4g5+38.Kg4Ne439.Kh5Nc339...Kg740.Kg4Kf641.Kh540.Kxh6Nxa241.h4gxh442.gxh4Nc143.Kh5Kf544.d6cxd645.Kh6Kf646.Kh5b547.Bg8Kg748.Bd5Kf649.Bg8=Stockfish1328...Rd828...Ra8Stockfish13, considered by Bl29.e5Ke730.Nd5+Bxd531.Bxd5Nxe532.Bxb7Rxa233.Rc1Rb234.Rxc7+Kf635.Bd5Rxb4Stockfish1328...Ke7Stockfish1329.Kg1Rd830.Rd1Rxd1+31.Nxd1Nd632.Nc3Kf633.Kf2Ke534.Ke3considered,Be835.Nd1Bf736.Nf2Nc4+36...Bxa237.Nd3+Ke638.Nc5+Kf639.Kd4Wh's active K compensates28...Bd729.Kg1g6Stockfish13- keeps all the tension29.Nd5Bxd529...Ra830.e5Re8transposes to a line covered in analysis above30.exd5Ke731.h4?given the match situation Wh was actually trying to win,
but this gives Bl the kind of central blockade he was after31.Re1+Kd631...Kd732.Bh3+Kd633.Re6+Kxd5is what Bl had in mind34.Re7Ne535.Rxc735.Rxg7c636.Rxb7Kc437.Re7Rd1+38.Kg2Rd2+39.Kf1Rxh240.Bf5Kd441.Bxh7Rxa2=but unbalanced, which is what Bl was after35...Ke436.Bg2+Ke337.Bxb7Rd1+38.Kg2Rd2+39.Kg1and Bl has nothing better
than to accept the perpetual39.Kh3nearly gets mated, but Wh escapesg540.Rc3+Kd441.Rc5g4+41...h542.Rd5++-42.Kh4Rxh2+43.Kg5h6+44.Kf544.Kf6?Nd7+-+44...Nd345.Rd5+45.Rxb5?Rh5+45...Kc446.a3Ra247.Ke4Re2+48.Kf5Ra2repetition, Stockfish1332.Bf1is the
line given by both EnginesNe533.Bxb5Ra833...Rf834.Kg2Ra8is
lichess, wasting a tempo, just to bring the Wh K one square nearer?!34.a4Kxd535.Rd1+Ke435...Ke636.Re1c6is a more human attempt at winning37.Bc4+Kd638.Bb3h639.Rd1+Kc740.Re1Nd3!?40...Re8=41.a5Re742.Kg2Kd643.Rd1+41.Re7+Kb642.Rxg7Rf843.Rg6Rf1+44.Kg2Rf2+45.Kg145.Kh3Ne546.Rxh6Nf347.Kg4Nxh2+48.Kh5Rf349.Bd1Rxg350.Rf6=Wh's K is cut off, but so is Bl's N45...Rb246.Be6h547.h4Rxb448.Rh6Rxa449.Rxh5=Stockfish13-though here the B is better than the N36.Re1+Kd437.Rd1+and now Bl must repeat, as the attempt at winning is too
dangerous with the liberated BKc3?38.Rc1+Kxb439.Rxc7Rg840.Rxb7+-Stockfish1331...Ne532.Rc1lichess labels this a mistake, & it
makes life easier for Bl. However , its alternative of32.d6+fails to
secure equality- no followup is given by lichess, but it was what Bl expected
as it liberates the BKxd632...Rxd633.Re1Ke634.Bxb7Rd435.Be4Rxb436.Bxh7c5retains an edge for Bl- the 3 Bl pieces work together far
better than Whs33.Rd1+33.Bxb7c6-+traps the B33...Ke734.Re1Kf635.Rf1+35.Bxb7Rd436.a3Rd337.Kg2Rxa338.Rc1Rb339.Rxc7Rxb440.Bd5=Stockish13- but in practical play Bl would have good winning
chances with the extra pawn.32...Kd6-+from now on lichess claims four
further inaccuracies by Wh, but te Wh K is still a long way off & Wh was also
beginning to live on increments( Bl was down to 15 mins)33.Kg1Ra834.Rc2Ra435.Be4lichess inaccurate35.Rb2but Bl would have been content withNc436.Rf2Rxb437.Rf7Rb1+38.Kh2Rb239.Kh3Rxa2-+Stockfish13- Bl
pawns travel faster40.Be4Ne541.Rxg7h542.Rg5Ng4threatens mate43.Bg2b4the d5 pawn remains in Wh's way35...h636.Kg236.Rb2again
insisted upon by lichessNc4-+36...Rxb437.Bf5Rc437...Rd438.Be6c5Stockfish1338.Rb2b439.Bc2Rd440.Bb3c540...Nd341.Re2Nc5
Stockfish13 alternative41.dxc6bxc642.Rf2c543.Rf843.Rf4insisted
upon by lichess, but just looks like surrender to non-Engine eyesRxf444.gxf4Nc645.Bf7Na546.Kf2c4and Bl will win a B, or, at the very least
win both Wh's K side pawns43...c444.Rd8+Kc545.Rc8+Kd546.Ba4
and , finally, lichess calls this inaccurate as it insists that Wh must play ..
....46.Kh346...Rd2+47.Kh3Rxa248.Rd8+Ke449.Bb5b349...h5
threatening a mate was considered, but pushing the pawns looked simplest50.Rd1c3a very complex game, against very stiff Wh resistence, with a drawn
outcome possible at various points.0–1
Meetings every Tuesday upstairs at The Scholars, Aberystwyth, 6.30 pm. All welcome.
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