Puzzle of the week #69

Chess Diagram: 

[Event "Puzzle #69"][Date "2009.05.01"][Result "1-0"][SetUp "1"][FEN "5r1k/R5p1/6Pp/5P1K/7P/1p1p4/8/8 w - - 0 1"]

Last night we talked about Rooks and their force on open files. There are plenty of open ones in the endgame and combined with passed pawns, it always is a recipe for interesting and complicated positions. The above was composed by Selezniev 90 years ago back in 1919. Your tasks:
a) Analyse the position to identify the positives and negatives for each side (10 points)
b) White to move and win (10 points)

Total available points for this puzzle is 20. The answers will be published next week together with puzzle #70.

Puzzle #68 solution:
I am very happy to see so many responses. Our U10 BC Boys Champion for 2009 is John and his solution looks like this:
Moves 1-5:

[Event "Puzzle #68"][Date "2009.04.24"][Result "0-1"]1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.Nf3 Bc5 5.e3 Nc6

Moves 6-9:
[Event "Puzzle #68"][Date "2009.04.24"][Result "0-1"][SetUp "1"][FEN "r1bqk2r/pppp1ppp/2n5/2b1P3/2P3n1/4PN2/PP3PPP/RNBQKB1R w KQkq - 1 6"]6.Nc3 O-O 7.Be2 Re8 8.O-O Ngxe5 9.Nxe5 Nxe5 {How is the position now? Black has achieved the capture of e5-pawn. Ne5 can strike at many out-posts, Re8 is fairly good on the e-file, working with Bc5 to put pressure on e3. But Bc5 isn't THAT good, since Black is no-where near to sacing on e3, so Bc5 is kind of like a 'wood-pecker' White will need to find a way to prevent Black's plan while also doing his own plan}

Move 10-13:
[Event "Puzzle #68"][Date "2009.04.24"][Result "0-1"][SetUp "1"][FEN "r1bqr1k1/pppp1ppp/8/2b1n3/2P5/2N1P3/PP2BPPP/R1BQ1RK1 w - - 0 10"]10.b3 a5 11.Bb2 Ra6 12.Ne4 Ba7 13.Qd5 Rae6 {What are the most probable plans for both sides at this moment? White should do: should try to come into Black's territory and try to stuff Black's pieces up. Meanwhile White will develop and figure out a good plan to invade. Black should do: should finish developing and push White's pieces back. Black's Rooks can attack Ne4 and the rest of the army can attack Qd5. Meanwhile, Black will attack on the K-side making White defend even more}

Moves 14-17:
[Event "Puzzle #68"][Date "2009.04.24"][Result "0-1"][SetUp "1"][FEN "2bqr1k1/bppp1ppp/4r3/p2Qn3/2P1N3/1P2P3/PB2BPPP/R4RK1 w - - 6 14"]14.Qxa5 Bb6 15.Qc3 Qh4 16.f4 Rh6 17.h3 {In what way did the position change since last diagram? Black is now totally free and is attacking on the K-side. He has also pushed White back when White greedily ate a5. Which side has chosen the right plan? Black has obviously. Because he has a totally good attack on the K-side, while White just ate a5 and can't even use his extra pawn one little bit}

Moves 17-18:
[Event "Puzzle #68"][Date "2009.04.24"][Result "0-1"][SetUp "1"][FEN "2b1r1k1/1ppp1ppp/1b5r/4n3/2P1NP1q/1PQ1P2P/PB2B1P1/R4RK1 b - - 0 17"]17...d5 18.cxd5 Bxh3 {This is the most critical moment of the game? Why is that? Black sacs a whole minor pieces to complete his attacking initiative stroke on the K-side. This move brightens the game and makes the Black pieces completely come to life. Black charges ahead wtih courage. Is his attack justified? Yes. Because it allows all the Black pieces to play and attack Kg1. Black's attack shattered the White's King pawn-shield. The White King is forced to run away like a lost animal}

Moves 19-26:
[Event "Puzzle #68"][Date "2009.04.24"][Result "0-1"][SetUp "1"][FEN "4r1k1/1pp2ppp/1b5r/3Pn3/4NP1q/1PQ1P2b/PB2B1P1/R4RK1 w - - 0 19"]19.gxh3 Qxh3 20.Kf2 Qh2+ 21.Ke1 Qg2 22.Rf2 Qxe4 23.Kd2 Qxd5+ 24.Kc2 Rd6 25.Rff1 Rc6 26.Rf2 Nd7 {What threat should Black always be careful about? Black should always make sure he doesn't lose his initiative grip and allow White counter-play. One main threat White has is Qxg7#}

Moves 27-28:
[Event "Puzzle #68"][Date "2009.04.24"][Result "0-1"][SetUp "1"][FEN "4r1k1/1ppn1ppp/1br5/3q4/5P2/1PQ1P3/PBK1BR2/R7 w - - 6 27"]27.Bc4 Qe4+ 28.Kd1 Nf6 {How do you win a game when you have a winning position? That side has to exploit his advantage. I.e.: Suffocate the opponent, by bringing all your pieces to help support. Exploit the opponent's position using your winning plan}

Moves 29-30:
[Event "Puzzle #68"][Date "2009.04.24"][Result "0-1"][SetUp "1"][FEN "4r1k1/1pp2ppp/1br2n2/8/2B1qP2/1PQ1P3/PB3R2/R2K4 w - - 10 29"]29.Re2 Rd6+ 30.Rd2 Red8 {Why is Black winning in this position? Black is winning since he has totally exploited his advantage. His active Rooks are hammering Kd1. Qe4 is torturing White's position. Nf6 is a good defender and is ready to spring and attack. Bb6 hammers pressure on e3 on the e-file, where Kd1 might be forced to move to. The pawns are a big massive army that is ready. Why did White resign? The d-file will soon be opened, and Kd1 will be totally exposed and Black's pieces will kill Kd1. In fact, White's whole position is under pressure. White's fort is falling over}

The end
[Event "Puzzle #68"][Date "2009.04.24"][Result "0-1"][SetUp "1"][FEN "3r2k1/1pp2ppp/1b1r1n2/8/2B1qP2/1PQ1P3/PB1R4/R2K4 w - - 14 31"]31.Rxd6 ... (31.Bc1 Rxd2+ 32.Bxd2 Bxe3 wins}) 31...Rxd6+ 32.Kc1 ... (32.Ke1 Bxe3 33.Kf1 Qf3+ 34.Ke1 Qf2#) 32...Bxe3+ {The City of Groningen is located in Netherlands}

Correct solutions:
Ricky, Jeremy, Andy Y, Humphrey, Danny, Owen, John - 40 points
Joshua - 38 points
James, Marcus - 35 points
Karl - 33 points
Andy Q - 30 points
Alex Ge - 27 points
Katerina, Joanne, Jin-Lang - 26 points
Wilson - 23 points
James - 10 points for puzzle #67

John - 368 points
Joshua - 354 points
Andy Qian - 338 points
Andy Yee - 301 points
Karl - 298 points
Jeremy - 275 points
James - 232 points
Mark - 223 points
Wilson - 191 points
Humphrey - 154 points
Marcus - 142 points
Katerina - 113 points
Jacky - 80 points
Nathaniel - 63 points
Alex Ge - 48 points
Joanne - 47 points
Ricky, Danny, Owen - 40 points
Jin-Lang - 27 point
Darren - 20 points


Caged King in endgame