Once before this season I posted about how well Aberystwyth was doing and then immediately had to retract after an unexpected defeat. Now the same thing has happened again: our shock victory over Cardigan A was followed by an equally surprising loss to Steynton A, a serious setback in our attempt to retain the Dyfed League title. Rudy van Kemenade weakened his kingside against Martin Jones's Bishop's Opening, and found himself under pressure. Though he got back on terms at times during the game, he eventually lost a difficult ending. Adam Watkin-Jones's game against Mark Paffard was one of those where hostilities never really get started, and finished early in a draw. Julie van Kemenade found herself in an awkward pin against David Pinch, and only emerged in a losing ending. On the plus side for Aber, James Cook won a pawn early against Scott Hammett's Latvian Gambit, and picked up several more for a comfortable win. The match finished 2½-1½ to Steynton A.
As a reminder that chess is not all about matches, I throw in an entertaining club night game between Kieran Judge and myself.
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| Move | N | Result | Elo |
|---|---|---|---|
| Replay and check the LiveBook here |
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1.e4 e5 1...d6 2.d4 Nf6 3.Nc3 Nbd7 4.Nf3 e5 5.Be3 c6 6.Qd2 Be7 7.Be2 h6 8.h3 Qc7 9.0-0 Nf8 10.dxe5 dxe5 11.a3 g5 12.Rad1 Ng6 M Jones-Van Kemenade, Dyfed League 2016,1-0 2.Bc4 Nf6 3.d3 c6 4.Nf3 Be7 5.0-0 d6 6.c3 6.Re1 main 6.a4 h6 7.Nbd2 Nbd7 8.Re1 Nf8 9.d4 Qc7 10.c3 Kett-Van Kemenade, WLS ch 2018,1/2-1/2 6...h6 7.Nbd2 Nbd7 8.Bb3 8.Re1 Qc7 9.Nf1 d5 10.Bb3 dxe4 11.dxe4 Nc5 12.Bc2 Bg4 Heap-Van Kemenade, Dyfed League 2015,1/2-1/2 8...Nc5 Stockfish10 8...Nf8 9.d4 Qc7 10.Re1 g5 11.Nf1 Ng6 12.Ne3 Nf4 13.Nf5 Bf8 14.g3 Ng6
Kett-Van Kemenade, ECF blitz qual 2018, Cardiff 2018,1/2-1/2 9.Bc2 Ne6 10.Re1 Qc7 11.Nf1 g6 12.a4 Nh5 13.d4 Nhf4 14.dxe5 dxe5 15.Ne3 Bf6 leads to
a slightly awkward position for Bl's K, but Stockfish10 thinks it should be OK,
even though it as usual has some tactics to show 15...0-0 Stockfish10-
Bl's first idea, but thought it lost a pawn after 16.Ng4 however Stockfish
ignores this 16.Nc4 Rd8 17.Bd2 Ng5 18.Ncxe5 transposes 16...Rd8 17.Bd2 17.Nd2 h5 18.Ne3 a5-+ 17...Ng5 18.Ngxe5 Bf6 19.Qc1 Bxe5 19...Rxd2 20.Qxd2 Bxe5 21.Nxe5 Qxe5 20.Nxe5 Nfh3+ 21.gxh3 Nxh3+ 22.Kg2 Qxe5 23.Bxh6? Qh5-+ 24.Bd1 24.Qe3 g5-+ 24...Qh4 25.Be3 Bg4 26.Kf1 Bxd1 27.Rxd1 Qxe4-+ 15...f6 considered, but looked to be a bit
loosening, though it does stabilize the e5 pawn. However Stockfish10 shows how
Wh could exploit this. 16.Nh4 keeps threatening invasion on f5 16.Nd5
also cxd5 16...Nxd5 17.exd5 Nf8 18.a5+- 17.exd5 Kf7 17...Ng5 18.Bxf4 Nxf3+ 19.Qxf3 exf4 20.d6 Qxd6 21.Rad1 Qc7 22.Bxg6+ Kf8 23.Qd5 Bc5 24.Bh5 Kg7 25.b4 Bf8 26.Re8+- 18.dxe6+ Nxe6 19.Nh4 Nf8 20.a5 Be6 21.Qf3 f5 22.Nxf5 gxf5 23.a6 Rb8 24.Bxf5 Bf6 25.axb7 Bxf5 26.Qxf5 Rxb7 27.h4= 16...Kf7 16...0-0 17.Nxg6 Nxg6 18.Nf5 Ngf4 19.g3 Nh3+ 20.Kg2 Neg5 21.Qh5 Bxf5 22.exf5 Bc5 23.f4+- Stockfish10 17.Nef5 Rd8 it seems other
moves lose as well 17...Qd8 18.Bd2 Kg8 19.Bxf4 Nxf4 20.Nxg6 Nxg6 21.Qh5 Bxf5 22.Bb3+ Kg7 23.exf5 18.Nxh6+ Ke8 19.Qg4 Nd4 20.N4f5 gxf5 21.Qg8+ Kd7 22.Qh7 Nxc2 23.Rd1+ Nd5 24.Nxf5+- Stockfish10 15...Ng5
Stockfish10 is a path to equality 16.Bb3 16.Nc4 Bg4 17.Bxf4 exf4 18.Qd4 0-0 19.Nxg5 hxg5 16...0-0 17.Nxg5 hxg5= 16.Nc4 16.Nd5 cxd5 17.exd5 Kf8 18.dxe6 Nxe6 18...Bxe6 19.Bxf4 exf4 20.Bxg6± 19.Qe2 Nf4 20.Qe4 Bf5 21.Qb4+ Be7 22.Qb3 Bxc2 23.Qxc2 Bf6 24.Qe4 Rd8 Stockfish10 16...Ke7 17.Be3 Rd8 17...b6 18.Bb3 g5 19.g3 Nh3+ 20.Kh1 h5 21.Ng1 Nxg1 22.Kxg1 h4 23.Qf3 Rg8 24.Kh1± Stockfish10 18.Qc1 g5 19.g3 the N
needs shifting if Wh wants to put Rs on the d file Nd3?! an afterthought-
Bl was too hopeful about being able to make some use of the weakenened wh
squares around Wh's K 19...Rg8 considered for a while, when it is actually
quite dangerous for Wh to take the piece 20.Kh1 20.Bxf4 gxf4 21.b3 Ng5 22.Qa3+ c5 23.Nxg5 hxg5 24.Rad1 Be6 25.Nd6 Rh8 20...Kf8 21.gxf4 gxf4 22.Bd2 Ng5 23.Nxg5 hxg5 24.Rg1 Be6 25.b3 g4= Stockfish10 19...Nh3+
simplest 20.Kg2 b6 21.Ng1 21.Kxh3? Nf4# 21...Ba6 21...Nxg1 22.Kxg1 Kf8 23.Bd1 Kg7 22.Nxb6 Nhf4+ 23.gxf4 axb6 24.f5 Nf4+ 25.Bxf4 exf4 26.e5 Bxe5 27.Nf3 f6 28.Nd4 Rd6 29.Be4 Bb7 Stockfish10 20.Bxd3 Rxd3 21.Qc2 now Wh gains quick entry to the d file Rd8 21...Rd7 22.a5 22.Red1 b6 23.Rxd7+ Bxd7 24.Rd1 Rd8 22...Bg7 23.h4 f6 24.hxg5 hxg5 25.b4 Kf7 26.Qe2± Stockfish10, but Bl is still with some hopes 22.Red1 g4?
to relieve the pressure on e5, but Bl's K side pawn structure is now in ruins 22...b6 23.Rxd8 Nxd8 24.a5 Rb8 25.axb6 axb6 26.h4 Ne6 27.b4 Bd7±
but Bl is clinging on 23.Ne1+- Bg5 23...Rh8 24.f4 Kf8 25.Nd3 exf4 26.gxf4 Be7 27.Kh1+- the Bl pieces are huddled in corners, while the Wh ones
take over the centre 24.Rxd8 Nxd8 24...Qxd8 25.Rd1 25.Nxe5 Bxe3 26.fxe3 Ng5= 25...Qc7 26.Qe2 h5 27.h3+- 24...Kxd8 25.Rd1+ 25.Qd1+ Ke8 26.Qxg4 Nf4 27.Qd1 Nh3+ 28.Kg2 Be6 29.Nd6+ 29.Qd6 Qxd6 30.Nxd6+ Kd7 31.Bc5 b6 32.Ba3 Be7 33.Nxf7 Bxf7 34.Kxh3+- 29...Kf8 30.Bxg5 Nxg5 31.h4 Nh7 32.Qd2 Kg8 33.f4+- 25...Ke8 26.Qe2 Bxe3 27.Qxe3 Ng5 28.f4+-
Stockfish10-but both these recaptures are better than allowing access to d6. 25.Bc5+ Ke6 25...Kf6 26.Bd6 Qd7 27.Rd1 Qe8 28.Bxe5+ Kg6 29.f4+-
Stockfish10 26.Rd1 26.Nd6! preferred by Stockfish10 Bd7 27.f4 gxf3 28.Nxf3 Be7 29.Rd1 when all of Wh's pieces are in action 26.Bd6 Qd7 27.Rd1 Qe8 28.Bc7 Be7 29.Nd6 Qf8 29...Qd7 30.Nf5 Qxc7 31.Ng7+ Kf6 32.Ne8+ Kg6 33.Nxc7 30.Nf5 b6 31.Nxe7+- 26...Be7 27.Bd6 27.Rd6+ Bxd6 28.Nxd6 b6 29.Ne8 Qb8 30.Qd2 bxc5 31.Qxd8 f6 32.Nc7+ and Bl has to give up
the Q to avoid a mate in 14. However, there are many ways for Wh to proceed &
humans are better off usually following simpler lines. 27...Bxd6 28.Rxd6+ 28.Nxd6 Stockfish10, when Bl's best appears to be to give up the Q, as Ke7 29.Qd2 b5 30.Qxh6 Be6 31.Qh8 and Wh keeps picking up pawns 28...Ke7 29.Qd2 this gives away all the advantage, though fortunately for Wh, Bl chooses
the wrong move , & there still is a win for Wh. 29.Rxh6 Be6 simplest ,
should be a win , though Bl retains some hopes with only a pawn in arrears 29...f6 29...Be6! Stockfish , is the accurate way to get a near level
position. 30.Rxe6+ 30.Qxh6 Bxc4 31.Qf6+ Ke8 32.Qh8+ Ke7 33.Qf6+ draws 33.Rd2 Rc8= Bl has compensation for the pawn 30...Nxe6 31.Qxh6 Rg8 32.Ne3 Qd7 and compared with the game continuation, Bl has unravelled his
position- Wh can still go for a repetition 32...Qd8 33.Qh5 Qd2 34.Kf1 Qxb2 35.Qxe5 Kd7 36.Qf6 Rf8 37.Nxg4 Stockfish10 33.Qh4+ Kf8 34.Qh6+ Ke7 35.Qh4+= 30.Qxh6+- Be6 31.Qg7+ Nf7 32.Rxe6+ Kxe6 33.Nd3 if a Q & 1
N is a dangerous combination, then a Q & 2 Ns even more so. Although an
exchange up, the Bl R is out of the game. 33.Qxg4+ Stockfish10- simplest Ke7 34.Ne3 Nd6 35.Qg7+ Kd8 36.Qxf6+ Qe7 37.Qh8+ Qe8 38.Qg7 Rc8 39.Nf3
and Bl has trouble holding Rc7 40.Qf6+ Qe7 41.Qg6 Rd7 42.Nf5 Nxf5 43.Qxf5 Qf7 44.Qxf7 Rxf7 45.Nxe5 4 pawns for the exhange is more than enough 33...Ke7 33...b6 keeps a N out of c5, however 34.Qxg4+ Ke7 35.Ne3 Qd7 36.Nf5+ Kd8 37.Qg8+ Qe8 38.Qg6 Qe6 39.Qg8+ 39.Ng7 Qe7 40.Nh5 Kc7 41.Nxf6 Rd8 42.Nb4 Rd6 43.Nfd5+ cxd5 44.Nxd5+ Rxd5 45.exd5 Nd6 46.h4± 39...Qe8 40.Qg7 Qe6 41.g4 Rc8 42.h4+- the pawns will decide, Stockfish10 33...Rh8 also considered 34.Nc5+ Ke7 35.Ne3 Ke8 36.Nxg4+- Stockfish10 34.Ne3 Re8 34...b6 Stockfish10, had to be tried 35.Nb4 Rd8 36.Nf5+ Ke6 37.Qxg4 Qd7 38.Kg2 Rc8 38...Rf8 39.Nxc6+- 39.Nh6+ Ke7 40.Qxd7+ Kxd7 41.Nxf7 35.Nf5+ Kd8 36.Qxf6+ Kc8 escape? 37.Qxf7! Qxf7 38.Nd6+ Kc7 39.Nxf7
and Wh should have an easy win =- the Ns gobble up the remains of Bl's K side
& the R has nowhere it can enter. However... Kb6 40.Nfxe5 c5 there are lots
of ways forward for Wh 41.f4 41.Nxg4 Rxe4 42.Nde5 Re1+ 43.Kg2 Kc7 44.h4 and the pawns surge through, the R is unable to get anything on the Q side Kd6 45.f4 Rb1 46.h5 46.Nc4+ Kd5 47.Nge3+ Ke6 48.h5 keeps material if
desired 46...Rxb2+ 47.Nf2 b5 48.h6 Rd2 48...bxa4 49.Nc4+ Kc6 50.Nxb2 a3 51.Nbd3 a2 52.h7 a1Q 53.h8Q and Bl gets mated soon 49.Nc4+ 41.h4 gxh3 42.f4 Rc8 43.b3 Stockfish10, the R is barricaded out 41...gxf3 42.Kf2 Ka5 43.b3 43.Nc4+ Kxa4 44.Nxc5+ Kb5 45.Nd6+ Kxc5 46.Nxe8 ends all
Bl's desperation hopes 43...b5 44.axb5 Kxb5 45.Kxf3 Rd8 46.c4+ Kb6 47.g4 Rf8+ 48.Nf4 the N was doing a good job where it was on d3, preventing Bl
entry on b4 48.Kg3 Rf1 49.h4 and the pawns march through together 49.Nd7+ Kc6 50.N7xc5 also Rg1+ 51.Kf3 Rf1+ 52.Kg2 Rf8 53.h4 48...Rh8 49.h3 49.g5 as the R cannot return in time if it takes the pawn Rxh2 50.g6 Rh8 51.Nd5+ Kb7 51...Ka5 52.g7 Stockfish10 goes for mate 52.Nf6
is goodenough 52...Rg8 53.Nd7 a6 53...Rxg7 54.Nxc5 mating 54.Ne7 Rxg7 55.Nc6# 52.Nf6 forces the pawn through 49...Ka5 50.g5 50.Ned3
ends all Bl hopes 50...Kb4 51.g6 Kxb3 52.g7 this should still be fine
for Wh, amongst many other possibilities 52.h4 a5 53.h5 53.Ned3 Kxc4 54.h5 a4 55.g7 Rg8 56.h6 a3 57.h7 57.Nc1 57...Rxg7 58.h8Q Ra7 59.Nd5
mate in 6 53...a4 54.g7 Ra8 55.h6 a3 56.Ned3 Kc2 57.h7 a2 58.h8Q a1Q 59.e5 52...Rg8 53.Ne6 a5 Ns have trouble stopping a R pawn when its K is
near , as they can only come from one direction. Also, with scattered Wh pawns
the R has the freedom of movement its powers need. Instead of an easy rollover,
Wh must now be very careful 54.Nxc5+ 54.Nd7 Stockfish10-uses the other
horse- there is no need to give up the pawn that has advanced so far. Kxc4 54...a4 55.Ndxc5+ Kb4 56.Nxa4 Kxa4 57.h4 clearly useless 55.h4 a4 56.Nb6+ Kb4 57.Nxa4 Kxa4 58.h5 58.Nxc5+ Kb5 59.Ne6 58...c4 59.h6 c3 60.h7 60.Nd4 simplest 60...c2 61.Nc5+ Kb5 62.hxg8Q c1Q 63.Qb8+ Kc6 64.Qb7+ Kd6 64...Kxc5 65.Qc7+ 65.Qb6+ Ke7 65...Ke5 66.Nd3# 66.Qe6+ Kd8 67.Qd7# unless Wh wants to play with another Q? 54...Kb4 54...Kc3 55.Ned7 Rxg7 56.e5 Kxc4 57.Ke4+- Stockfish10 55.Ncd3+ 55.Ne6
Stockfish10 a4 56.Nd3+ Kc3 57.Nc1 Kb2 58.c5 Kxc1 59.c6 a3 60.c7 a2 61.Nf8 a1Q 62.c8Q+ Kd1 63.Qd8+ Kc1 64.Qg5+ Kc2 65.Qc5+ Kd2 66.Qd5+ Ke1 67.Qxg8 67.Ne6 keeps the Q central & threatens mating net 55...Kc3± 56.Nc5 both Ns now obstruct their pawns 56.Nc1 a4 57.c5 57.Ke3 57...Rxg7 58.Ne2+ Kb4 59.Nd3+ Kc4 60.Nb2+ Kb4 61.c6 61.Nxa4 Kxa4 Drawn- Lomonosov
tablebases 61...a3 62.Nd3+ Kb5 63.Ne5 Kb4 64.Nc1 Kc3= Stockfish10 56...Rxg7= Stockfish10 57.Na4+ 57.h4 Re7 58.Kf4 Rh7 59.Kg5 Kd4 60.Kg6 Rh8 61.Ned7 a4 62.Nxa4 Rxh4 63.e5 Kxc4= Stockfish10, as 2 Ns & K vs
K is drawn 57...Kb4 58.Nb2 Rh7 perhaps Bl was trying to win here, getting
the R to take the N on b2 58...a4! Stockfish10 59.Ned3+ 59.Nxa4 Kxa4= 59.Nc6+ Kb3= 59...Kc5= 59...Kc3 60.Nxa4+ 60.Nd1+ Kd2-+ 60...Kxd3 61.Nc5+ Kxc4= 59.Kg4 Rg7+ 59...Kb3 60.Ned3 Kc3 61.h4 a4= 59...a4 60.Nxa4 Kxa4 61.Ng6+- Wh mates in 39- Lomonosov tablebases 61.h4+- Wh mates in 45 -Lomonosov tablebases 60.Kf3 60.Kf5+-
Stockfish10 Rg2 61.Ned3+ Kb3 62.e5 a4 62...Rxb2 63.Nxb2 Kxb2 64.e6
Wh wins the race 63.Nxa4 Kxa4 64.e6+- 60...Rh7= 60...a4= 60...Kb3= 60...Kc3= 61.Kg3 Rg7+ 61...a4 62.Nxa4 Kxa4=
Lomonosov 61...Kc3= 61...Rc7= 62.Kf4 Rg2? 62...Rh7= 63.Kf5 a4= 62...Kb3 63.Ned3 Kc3 64.e5 a4= Stockfish10 65.Nxa4+ Kxd3 66.e6 Kxc4 67.Ke5 Ra7 68.Nb6+ Kc5 69.Kf6 Ra3 70.e7 Rf3+ 71.Ke6 71.Kg7 Rg3+ 72.Kf8 Rf3+ 73.Ke8 Kxb6= 71...Rxh3 72.Nd7+ Kd4= Stockfish10 63.Nbd3+± 63.h4+- 63.Kf5+- 63...Kc3 64.c5 64.Nc5 Rh2 65.Kg3 Rh1 66.h4 Kd4 67.Ned7 Kxc4= 64.Nc1 a4= 64...a4 65.c6 Rg7?
Bl worried about being cut off by a N from the backrank 65...a3! 66.c7 66.Ng4? Kxd3-+ missed by Bl that the R can stop the pawn 66.Nc1 Rc2 67.Ne2+ 67.Ned3 Kd2 68.e5 Rxc6 69.h4 a2 70.Nxa2 Rc4+ 71.Kg5 Kxd3 72.h5 Re4 73.Kf5 Rh4= Stockfish10 67...Kb2 68.Nd4 Rc3 69.Nb5 a2 70.Nxc3 a1Q 71.Nd5 Qf1+ 72.Kg3 72.Nf3 Qc1+ 73.Kf5 Qxc6 drawn-Lomonosov
tablebases 72...Qg1+ 73.Kf3 Qf1+= 66.Kf3 Rg1 67.c7 Rg8 68.Nb4 Kxb4 69.Nc6+ Kb3 70.Nd8 a2 71.c8Q Rf8+ 72.Ke3 a1Q repeats an earlier
variation 66.Ne1 Rg1 67.N5d3 a2 68.Nc2 Kxd3 69.Nb4+ Kc4 70.Nxa2 Rg6= Stockfish10 66...Rg8 67.Nb4 Kxb4 68.Nc6+ Kb3 69.Nd8 a2 70.c8Q Rf8+! 70...a1Q 71.Qe6++- 71.Ke3 a1Q= Stockfish10 66.Nc1+- 66.Kf5+- 66...Kc2 67.Ned3 a3 67...Re7 68.Kf5 a3 69.e5 Rc7 70.e6 Rxc6 71.e7 Rc8 72.h4 a2 73.Nb4+ Kxc1 74.Nxa2+ Kd2 75.Kg6 Ke2 76.h5 Kf3 77.h6 Ke4 78.h7 Kd5 78...Kf4 79.Nc3+- 79.Kf7+- 68.Ke5 Kb1 68...a2 69.Nxa2 Kxd3 70.Nb4+ Kc4 71.Nd5 Kc5 72.c7 Rg8 73.Ne7+- Stockfish10 69.Kd6 Rg3 70.c7 Rxd3+ 71.Nxd3 a2 72.c8Q a1Q 73.Qc1+ Ka2 74.Qxa1+ 74.Qc4+ Ka3 75.Qb4+ Ka2 76.Qa4+ Kb1 77.Qb3+ Qb2 78.Qxb2# 74...Kxa1 75.e5 1–0
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| White | EloW | Black | EloB | Res |
|---|---|---|---|---|
| Jones,M | 1733 | Van Kemenade,R | 2021 | 1–0 |
| Watkin-Jones,A | 1928 | Paffard,M | 1739 | ½–½ |
| Pinch,D | 1742 | Van Kemenade,J | 1761 | 1–0 |
| Cook,J | 1496 | Hammett,S | 1533 | 1–0 |
| Judge,K | 1064 | Francis,M | 1712 | ½–½ |
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