2010 South Dakota Championship (The Closed)

(1) Carrol,Curtis - Knudson,Michael (1441) [C55] 2010 SD Closed Sioux Falls (1), 16.04.2011 [Rybka 2.2 mp (60s)] C55: Two Knights: 4 d3, 4 d4 exd4 5 e5 and Max Lange Attack 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Nc3 Nxe4 5.Bxf7+ Kxf7 6.Nxe4 d5 7.Neg5+ Kg8 last book move 8.h4 [>=8.d4!? might be a viable alternative 8...h6 9.Nh3-/+ ] 8...h6-+ 9.Nh3 e4 10.Nfg1 Qxh4 11.g3 Qg4 12.Qxg4 Bxg4 13.c3 Bd6 14.Ne2 Bxe2 [>=14...g5!?-+ ] 15.Kxe2-/+ Rf8 16.d4 [16.d3 exd3+ 17.Kxd3 Ne5+ 18.Kd4 c6-/+ ] 16...g5 17.Be3 Ne7 18.Raf1 Nf5 19.g4 Nxe3 20.fxe3 Kg7 21.Rf2 Rxf2+ 22.Nxf2 c6 23.Rh3 Kg6 24.Nh1 [24.c4 b5 25.c5 Bb8-/+ ] 24...h5-+ 25.Ng3? [>=25.c4-+ ] 25...Bxg3 26.Rxg3 h4 [>=26...hxg4 and Black has reached his goal 27.Kf2 Rf8+ 28.Kg1 Rf3 29.Rxg4 Rxe3-+ ] 27.Rh3 Rf8 28.b3 Kf6 29.a3 [29.c4 Ke6-+ ] 29...Ke6 30.Ke1 Kd6 31.Ke2 Kc7 32.Ke1 Kb6 33.Ke2 Ka6 34.Ke1 [34.c4 dxc4 35.bxc4 Rf3-+ ] 34...Kb5 35.Ke2 a5 36.a4+ Ka6 37.c4 Kb6 38.Ke1 [38.cxd5 c5-+ ] 38...Kc7 39.Ke2 Kd6 40.Ke1?! not putting up any resistance [40.Rh1 Rf3-+ ] 40...b5! final destruction 41.axb5 [41.axb5 cxb5 Combination; 41.cxb5 cxb5 Combination] 41...cxb5 42.c5+ [42.cxb5 Kc7 43.Rh2-+ ] 42...Kc6 43.Ke2 [43.Rh2 no good, but what else? 43...Rf3 44.Ra2 Rxe3+ 45.Kf1-+ ] 43...Rf3! touché! 44.Rh1 [44.Rxf3 exf3+ Passed pawn] 44...h3 45.Ra1 h2 [45...Rg3 46.Kf2 Rg2+ 47.Kf1 Rxg4-+ ] 46.Rh1 Rh3 47.Kf2 [47.Kd2-+ the last chance for counterplay] 47...a4 48.bxa4 [48.Ke1 cannot undo what has already been done 48...a3 49.Kd2 a2 50.Kc3 Rxe3+ 51.Kb2 Re2+ 52.Kc3 Rg2 53.Rf1 Rg1 54.Rf6+ Kd7 55.Kb4 a1Q 56.Rg6 h1Q 57.Rg7+ Ke8 58.Rg8+ Kf7 59.Rb8 Rxg4 60.Rb7+ Ke8 61.Rb8+ Ke7 62.Rb7+ Kd8 63.Rb6 Qhe1+ 64.Kxb5 Qf1+ 65.Kc6 Qa8+ 66.Rb7 Qfa6+ 67.Kxd5 Q8xb7+ 68.c6 Qbxc6+ 69.Ke5 Qe6# ] 48...bxa4 49.Kg2 Rh8 50.Kg3 [50.Kf2 does not save the day 50...a3 51.Ke2 a2 52.Kd2 Rb8 53.Kc2 Rb1 54.Rxb1 axb1Q+ 55.Kxb1 h1Q+ 56.Kc2 Qg2+ 57.Kc1 Qg1+ 58.Kd2 Qf2+ 59.Kc1 Qxe3+ 60.Kb2 Qxd4+ 61.Ka2 Qxc5 62.Ka1 e3 63.Kb1 e2 64.Ka1 e1Q+ 65.Ka2 Qc2+ 66.Ka3 Qec3# ] 50...a3 51.Kf2 a2 52.Kg2 [52.Kg3 doesn't do any good 52...Rh4 53.Kf2 Rxg4 54.Ra1 Rg1 55.Rxg1 hxg1Q+ 56.Kxg1 a1Q+ 57.Kf2 Qd1 58.Kg2 Qe2+ 59.Kg3 Qxe3+ 60.Kg2 Qf3+ 61.Kh2 e3 62.Kg1 e2 63.Kh2 e1N 64.Kg1 Qg2# ] 52...Rh7 0-1

(2) Lapour,Cash (940) - Derby,Mark (1663) 2010 SD Closed Sioux Falls (1), 16.04.2011 1.d4 e5 2.dxe5 d6 3.exd6 Bxd6 4.Nf3 Bb4+ 5.Nc3 Qxd1+ 6.Kxd1 Bxc3 7.bxc3 Nf6 8.Bf4 Ne4 9.Ke1 c5 10.Be5 f6 11.Bxb8 Rxb8 12.e3 Nxc3 13.Bc4 b5 14.Be2 Bg4 15.h3 Bf5 16.Bd3 Be6 17.a3 a5 18.Kf1 0-0 19.Kg1 a4 20.Kh2 b4 21.axb4 cxb4 22.Nd4 Bf7 23.Rhf1 b3 24.cxb3 axb3 25.Kg1 b2 26.Rae1 Bg6 27.e4 Rfc8 28.f3 Na2 29.Ne2 Rc5 30.Rb1 Be8 31.Nd4 Rc3 32.Rfd1 Ba4 33.Rd2 Rc1+ 34.Rxc1 bxc1Q+ 0-1

(3) Derby,Mark (1663) - Deanovic,Russ [A07] 2010 SD Closed Sioux Falls (2), 16.04.2011 [Rybka 2.2 mp (60s)] A07: Réti Opening: New York and Capablanca Systems 1.Nf3 d5 2.g3 Bf5 3.Bg2 last book move 3...Qd6 4.0-0 e5 5.d3 Controls e4 5...e4 [5...Nc6 6.d4+/= ] 6.dxe4 Bxe4 Black has an active position 7.Nbd2 Nf6 8.b3 White has a cramped position [8.Nxe4!? dxe4 9.Ng5+/= ] 8...Nc6 9.a4 Be7 10.Nxe4 Nxe4 White has the pair of bishops 11.Ba3 White threatens to win material: Ba3xd6 11...Qe6 12.Bxe7 White wins a piece 12...Nxe7 White has a cramped position 13.Nd4 White threatens to win material: Nd4xe6 13...Qf6 14.Qd3 Nd6 [14...0-0-0!?= ] 15.Nb5+/= Nxb5 16.Qxb5+ White forks: e8+b7 16...Qc6 17.c4 [17.e4 Qxb5 18.axb5 dxe4 19.Bxe4 c6+/- ] 17...Qxb5 18.axb5 dxc4 19.bxc4 c6 20.Rfb1 0-0 [20...h5!?+/- ] 21.bxc6+- bxc6 22.Rb7 Rfe8 23.Raxa7 Rxa7 24.Rxa7 g6 25.Rc7 Nf5 26.e3 Ra8 27.Bxc6 Ra1+ 28.Kg2 Ra2 29.Kf3 Nd6? [29...Kf8+- ] 30.Bd5 [30.c5 might be the shorter path 30...Rd2 31.cxd6 Rxd6+- ] 30...Rc2 31.h4 h5 32.Rc6 Ne8 [32...Nf5 doesn't get the bull off the ice 33.Rxg6+ Ng7 34.Rf6+- ] 33.Rxg6+ [33.Rc8 makes it even easier for White 33...Kf8 34.Bc6 Rxc4 35.Rxe8+ Kg7+- ] 33...Kf8 34.Rh6 Ng7 [34...Rc1+- the only chance to get some counterplay] 35.Rf6 Rd2 [35...Ne6 is not much help 36.Bxe6 Ke7 37.Bf5 Rxc4 38.Rh6+- ] 36.Rxf7+ Kg8 37.Rd7+ [37.Rf6+!? keeps an even firmer grip 37...Kh7+- ] 37...Kf8 38.e4 Ne8 [38...Rd1 39.Rf7+ Kg8 40.Kf4+- ] 39.e5 Ng7 [39...Rc2 doesn't improve anything 40.e6+- ] 40.e6 [>=40.Rf7+ seems even better 40...Kg8 41.Rf6+ Kh7 42.Rf8+- ] 40...Nf5 41.Rf7+ Ke8 42.Rxf5 Ke7 [42...Rd1 is no salvation 43.Rf7 Re1 44.Bc6+ Kd8 45.Rd7+ Kc8 46.e7 Re5 47.c5 Re6 48.Ra7 Kb8 49.Rb7+ Kc8 50.Bd7+ Kxb7 51.Bxe6 Ka6 52.e8Q Ka5 53.Qb8 Ka4 54.Qb6 Ka3 55.Qb3# ] 43.Rxh5 Rd3+ 44.Ke4 Rd2 [44...Rd1 doesn't change anything anymore 45.Rh7+ Kd6 46.Rd7+ Kc5 47.e7 Re1+ 48.Kf5 Kb4 49.f4 Ka3 50.Be4 Rc1 51.e8Q Rxc4 52.Ra7+ Kb4 53.Qa4+ Kc3 54.Qa1+ Kd2 55.Ra2+ Rc2 56.Rxc2+ Ke3 57.Qg1# ] 45.f4 [45.Rh7+ Kd6 46.Rd7+ Kc5 47.f4 Kb4 48.e7 Kc3 49.Ke5 Re2+ 50.Be4 Ra2 51.e8Q Ra5+ 52.Rd5 Ra6 53.Rd3+ Kc2 54.Ra3+ Kc1 55.Rxa6 Kd2 56.Ra2+ Ke3 57.Kd6 Kd4 58.Ra3 Kxc4 59.Qa4# ] 45...Kf6 46.Rh6+ Kg7 [46...Ke7 hardly improves anything 47.Rh7+ Kd6 48.Rd7+ Kc5 49.e7 Re2+ 50.Kf5 Rxe7 51.Rxe7 Kd6 52.Rf7 Kc5 53.h5 Kd4 54.h6 Ke3 55.h7 Kd2 56.h8Q Ke2 57.Qb2+ Kf1 58.Re7 Kg1 59.Qg2# ] 47.Rh5 [47.Kf5 Kxh6 48.e7 Re2 49.Be6 Rxe6 50.Kxe6 Kh5 51.Kf5 Kh6 52.e8Q Kg7 53.Qe7+ Kg8 54.Kf6 Kh8 55.Qg7# ] 47...Rg2?? makes life more difficult [47...Kf6 48.Rh7 Kg6 49.Rf7 Rc2 50.e7 Re2+ 51.Kf3 Re1 52.f5+ Kh6 53.Be4 Rf1+ 54.Ke2 Ra1 55.e8Q Ra2+ 56.Ke3 Ra3+ 57.Kf4 Ra8 58.Qxa8 Kh5 59.Rh7# ] 48.c5 Kf6 [48...Kg6 does not solve anything 49.Rg5+ Kf6 50.Rf5+ Ke7 51.Rf7+ Kd8 52.e7+ Ke8 53.Bc6+ Kxf7 54.e8Q+ Kf6 55.Qf8+ Kg6 56.Kf3 Re2 57.Kxe2 Kh5 58.Bf3+ Kg6 59.h5+ Kh7 60.Be4# ] 49.Rf5+ Ke7 [49...Kg7 is not the saving move 50.Rf7+ Kg8 51.e7 Re2+ 52.Kf3 Rxe7 53.Rxe7+ Kf8 54.Rf7+ Ke8 55.c6 Kd8 56.c7+ Kc8 57.Be6+ Kb7 58.c8Q+ Kb6 59.Rb7+ Ka5 60.Qa8# ] 50.Rf7+ Ke8 [50...Kd8 cannot change destiny 51.e7+ Ke8 52.Bc6+ Kxf7 53.e8Q+ Kf6 54.Qe5+ Kg6 55.Qe6+ Kh7 56.Qe7+ Kh6 57.Qg5+ Kh7 58.Kd3 Rxg3+ 59.Qxg3 Kh8 60.Qg5 Kh7 61.Bd5 Kh8 62.Qh6# ] 51.Bc6+ Kd8 52.e7+ Kc8 [52...Kc7 cannot change what is in store for ? 53.e8Q# ] 53.e8R# 1-0

(4) Knudson,Michael (1441) - Rostrom,Dick (1500) 2010 SD Closed Sioux Falls, SD (2), 16.10.2010 1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 Ne7 5.a3 Bxc3+ 6.bxc3 0-0 7.Bd3 Nd7 8.Nf3 c5 9.Bxh7+ Kxh7 10.Ng5+ Kg8 11.Qh5 Re8 12.Qxf7+ Kh8 13.Qh5+ Kg8 14.Qh7+ Kf8 15.Nxe6+ Kf7 16.Nxd8+ Rxd8 17.0-0 Nf8 18.Qh5+ g6 19.Qf3+ Ke8 20.Bg5 Bf5 21.Bxe7 Kxe7 22.Rfe1 Ne6 23.g4 Ng5 1-0

(5) Likens,Terry (1800) - Knudson,Michael (1441) 2010 SD Closed Sioux Falls, SD (3), 16.10.2010 1.d4 Nf6 2.Nc3 g6 3.e4 d6 4.Bc4 Nxe4 5.Bxf7+ Kxf7 6.Nxe4 Bg7 7.Ng5+ Kg8 8.c3 h6 9.Qb3+ d5 10.Ne4 Kh7 11.Nc5 b6 12.Nd3 Bf5 13.Ne5 Bxe5 14.dxe5 c5 15.Nf3 Nc6 16.Bf4 Qd7 17.Rd1 c4 18.Qb5 Bd3 19.Nd4 Qg4 20.Qxc6 Qxf4 21.Qxd5 Rhf8 22.Qf3 Qxe5+ 23.Qe3 Qd6 24.Kd2 e5 25.Nf3 Rad8 26.Kc1 Qf6 27.Rd2 e4 28.Nd4 a6 29.Re1 Rde8 30.Qh3 Qe5 31.Nf3 Qa5 32.a3 exf3 33.Rxe8 Rxe8 34.Qd7+ 1-0

(6) Truelson,Nels (2207) - Derby,Mark (1663) [B13] 2010 SD Closed Sioux Falls, SD (4), 17.10.2010 [Rybka 2.2 mp (60s)] B13: Caro-Kann: Exchange Variation and Panov-Botvinnik Attack 1.e4 d5 2.exd5 Nf6 3.c4 c6 4.d4 cxd5 5.Nc3 Nc6 6.Nf3 Bg4 7.cxd5 Nxd5 8.Qb3 Bxf3 9.gxf3 last book move 9...Nxc3 [9...e6 10.Nxd5 Qxd5 11.Qxd5 exd5 12.Be3= ] 10.bxc3+/= Qb6 11.Qxb6 axb6 White has a new backward pawn: a2 12.d5 White threatens to win material: d5xc6 12...Ne5 Black threatens to win material: Ne5xf3 13.Bb5+ Nd7 14.Be3 Kd8 15.Bxd7 Kxd7 16.Bxb6 Kd6 17.a4 Kxd5 18.0-0-0+ Kc6 19.a5 e5 20.Rhe1 Bd6 21.Re4 Rac8 22.Kc2 f6 [22...Rhe8 23.Rh4= ] 23.Kb3 [23.f4 Rhe8= ] 23...Rhe8 24.Rc4+ Kd7 25.Bc5 White threatens to win material: Bc5xd6 25...Rc6 26.Bb4 After I move my king to a safer square I still don't want to advance and connect his pawns by Bxb4 but maybe there was a time for that move down the road. 26...Re6 27.Rh4 I'm not sure if that Rook move was to attack or defend the a file pawn. 27...h6 28.Ka4 Kc7 29.Kb5 f5 30.Rc4 We both had about a minute left on the clock when we got to the first time control. I felt good having made it to the edge of the end game with a 544 rating point differential and equal position. 30...Rxc4 31.Kxc4 g5?? [>=31...Bxb4 would save the game 32.cxb4 Rc6+ 33.Kb3 g6= ] 32.Bxd6++- Rxd6 33.Rxd6 Kxd6 34.Kb5 g4?? the final mistake, not that it matters anymore [34...Kc7 35.Kc5 e4 36.fxe4 fxe4+- ] 35.fxg4 f4 36.Kc4 f3 [36...e4 what else? 37.Kd4 e3 38.fxe3 f3+- ] 37.h4 Ke6 38.Kd3 Kd5 39.Ke3 [>=39.g5 and White can already relax 39...Ke6 40.g6+- ] 39...e4 40.g5 hxg5 41.hxg5 Ke5 42.c4 Kf5 43.c5 Kxg5 44.c6 bxc6 45.a6 c5 46.a7 c4 [46...Kf6 does not help much 47.a8Q Ke7 48.Qb7+ Kd6 49.Kxe4 Ke6 50.Qd5+ Ke7 51.Qxc5+ Kf6 52.Qc3+ Kg6 53.Qb2 Kf7 54.Qe5 Kf8 55.Kf5 Kg8 56.Kf6 Kh8 57.Kg6+ Kg8 58.Qg7# ] 47.a8Q c3 48.Qxe4 [48.Qa5+ Kf6 49.Qxc3+ Ke6 50.Qc6+ Kf7 51.Kxe4 Kg7 52.Qe6 Kh7 53.Qe7+ Kg8 54.Kf5 Kh8 55.Kf6 Kg8 56.Qg7# ] 48...c2 [48...Kf6 does not win a prize 49.Qc6+ Ke7 50.Qxc3 Kd6 51.Qc8 Ke7 52.Qc7+ Kf6 53.Qd6+ Kg7 54.Qe7+ Kh8 55.Qf8+ Kh7 56.Ke4 Kg6 57.Qe7 Kh6 58.Kf5 Kh5 59.Qg5# ] 49.Qxc2 Kg4 [49...Kf6 doesn't get the cat off the tree 50.Qc6+ Kf7 51.Qd7+ Kg8 52.Qe7 Kh8 53.Qf8+ Kh7 54.Kf4 Kg6 55.Qe7 Kh6 56.Kf5 Kh5 57.Qg5# ] 50.Qg6+ Kh4 51.Kxf3 1-0