11/1/2017 – Recently, the 2017 Spice Cup was held in St. Louis, Missouri, and won by Lazaro Bruzon Batista, Yunieska Quesada, and Dariusz Swiercz. This traditional event is organised by Webster University, also home to the strongest collegiate team in the US. It brought players from around the globe, including a field rich in titled players. Among them was our correspondent Alex Yermolinsky, who performed well, and brings his report with some fantastic games and notes. Not to be missed! | Photo: Paul Truong
ChessBase is a personal, stand-alone chess database that has become the standard throughout the world. Everyone uses ChessBase, from the World Champion to the amateur next door. It is the program of choice for anyone who loves the game and wants to know more about it.
Winning starts with what you know The new version 18 offers completely new possibilities for chess training and analysis: playing style analysis, search for strategic themes, access to 6 billion Lichess games, player preparation by matching Lichess games, download Chess.com games with built-in API, built-in cloud engine and much more.
I give promising mainlines for white against all black’s main replies to 1.d4 d5 that are engine-proof, easy to learn and can be played almost instantly.
€89.90
A half point back
The 11th Annual Spice Cupattracted61 players from 19 countries, including 21 Grandmasters, 6 International Masters and one Women Grandmaster. The traditional event is sponsored by Webster University, the host of the strongest program in American Collegiate chess. Headed by Susan Polgar, the Webster Team boasts international stars from all over the world and they have won the National Championship seven years in a row.
Back row (l to r): Ray Robson, Alex Shimanov, Priyadharshan Kannapan, Manuel Leon Hoyos; front row (l to r) Susan Polgar, Ashwin Jayaram, Illia Nyzhnyk, Le Quang Liem. Manspreading in the foreground: Vasif Durarbayli | Photo: Paul Truong
Things aren't looking to be easier for the competition in the upcoming years, as Webster has recently added Peruvian star Jorge Cori and Hungary's Peter Prohaszka, with more talent still on the waiting list.
There is no question that for many a young chessplayer coming to St. Louis to pursue college education while honing their chess skills not only represents an attractive option but is also a great opportunity. I wish the best of luck to all future applicants, but, <disclaimer> please, do not contact the author of this article with inquiries, as I am not in any shape or form associated with the Webster University Chess Program.
I really like playing in the Spice Cup. There are many advantages: a restricted number of players, therefore no overcrowding; a strong field to provide challenging competition; a comfortable game in 90 minutes time control, and a very nice location.
The excellent venue: the Clayton Plaza Hotel | Photo: Alex Yermolinsky
The city of Clayton just borders St. Louis proper from the west, and it's known for its highly educated and prosperous population of some 15 thousand people, many of whom reside in buildings such as this one.
The elegant, high quality housing in Clayton, where daily walks with the wife did wonders for morale | Photo: Alex Yermolinsky
My wife Camilla accompanied me to the Spice Cup for the first time, and while her own result in the tournament could have been better, her help and support were instrumental in my good performance. We enjoyed our walks on the quiet streets of Clayton, with our usual destination being this one:
Ye Olde Coffeehouse | Photo: Alex Yermolinsky
I had a bit of a shaky start: A second round loss to Vasif Durarbayli in 23 moves with white was a game to forget, but gradually I played myself into some kind of form. Ironically, it took another loss, to Sam Sevian, to really get me going, but what a game it was.
Sam Sevian 1-0 Alex Yermolinksy
Before you delve into the game. Take a look at this position and see what you can find.
Sevian - Yermolinsky
Here is a sample of the moves that rocked the game. Can you see what is coming? White to play and win.
Sevian has really come around as a mature player in 2017. The track record says it all. In the spring he shared first place in three events: the Southwest Class Championship, the Philadelphia Open and the Eastern Class Championship.
It was just a start. Having warmed up a bit, the 17-year-old then outright won the Spring Chess Classic Round-Robin (Group C) in St. Louis, and one of the largest Swiss tournaments in the U.S. Circuit, the Chicago Open.
Sam Sevian has had a superb 2017 | Photo: Paul Truong
This great run culminated in winning the American Continental Championship in Medellin, Columbia in June. Later in the summer Sam distinguished himself with a solid performance at the World Cup in Tbilisi.
New ...
New Game
Edit Game
Setup Position
Open...
PGN
FEN
Share...
Share Board (.png)
Share Board (configure)
Share playable board
Share game as GIF
Notation (PGN)
QR Code
Layout...
Use splitters
Swipe notation/lists
Reading mode
Flip Board
Settings
Move
N
Result
Elo
Players
Replay and check the LiveBook here
Please, wait...
1.e4c52.Nf3Nc63.d4cxd44.Nxd4Qb6I played this sideline a lot in the past. It seemed like a good idea to give an unusual twist to known Scheveningen structures. The point is to drive the white knight away from the center at the cost of losing some time on the extra queen move5.Nb3Nf66.Nc3e67.Qe2!?A popular choice among the numerous English Attack devotees. I had faced it against Mickey Adams and Ray Robson.Bb4!?I have always preferred this moveto the standard7...d68.g48.Bd20-09.a3Be7!10.Be310.e5is answered by the somewhat surprisingNd5!where the absence of white major pieces from the d-file allows Black the time to undouble the pawns. Adams-Yermolinsky, World Championship KO, New Delhi 2000 went11.0-0-0d612.exd6Bxd613.g3Be514.Nxd5exd5Two things seemed obvious to me at this moment of the game: Black must play a7-a5 quick to generate threats, and White's Be3 is always answered by d5-d4.Not much different is the other move order:10.0-0-0d511.Be3Qc712.exd5Nxd513.Nxd5exd5was Robson-Yermolinsky, US Championship 201010...Qc711.f4 This is a different concept. White wants to close the center.d512.e5Nd7
The resulting pawn structure is nothing new, we get it from the Classical Steinitz French. There are some minor details though. The White knight is way from d4, so usual defensive plans based on exchanging pieces aren't available. Instead Black may try for f7-f6. Also the white queen blocks her own bishop, so Sevian's next move attempts to take care of both problems.13.Qg4!? An ambitious move from an ambitious player.Previously known was13.Nb5Qb814.0-0-0where Black absolutely must strike in the center withf6! instead of the meek14...a615.N5d4Nc516.Kb115.exf6Nxf6seeking further complications after16.Kb1e513...b614.Bb5!?An interesting idea to establish the control of the d4-square.Nc5During the game I considered14...a615.Bxc6Qxc616.Nd4Qc417.Nxe6dangerous for Black. Now I can see that afterfxe618.Qxe6+Rf719.Nxd5Bh4+!20.g3Qxc2 it can go both ways.15.Nd4Nxd416.Bxd4f5I felt obliged to secure my king.16...Ba617.Bxa6Nxa618.0-0-0and White aims for an attack with f4-f5.17.Qh3Ne418.0-0Bc5?!Possibly a mistake, as later I realized I cannot trade the light-squared bishops with my knight on the board.18...Bd719.Bd3Nxc320.bxc3Bc5would have been roughly equal.19.Ne2a520.Qe3Bd7Change of plans.20...Ba621.Bd3!a422.Rac1and with his queenside secure White can now think of g2-g4, albeit his advantage is very small.21.Bd3Rfc822.Rac1Threatening c2-c4. That's what happens when f7-f5 makes the e6-pawn weak.b523.Bxe4fxe423...dxe424.Bxc5Qxc525.Qxc5Rxc526.Rfd1clearly in White's favor.24.c3Be725.g4Rf826.Ng3Bh4I could have slowed down his f4-f5 by just playing26...h627.Nh5Be828.Qh3Bxh5
29.Qxh4!Sam was absolutely correct with this decision.Not so good for him was29.gxh5Qe730.Kh130.Rc2Rf531.Qg4Bg5!is one fine point. When the bishop gets to h6 it'll play important roles in both attack and defense.30...Rf531.Qg4Raf832.b4axb433.axb4Qd834.Rg1R8f7appeared very safe to me.29...Bg630.Rf2Qc4From this point to the end of the game I played on the increment alone. In such situations one must counterattack or at least bother the opponent with some threats. I have learned this much from a lifetime of playing the Sicilian.30...b4I rejected on account of31.axb4axb432.Qg5but there was a nice defensive idea I failed to consider:Ra6!and White cannot yet go33.f5exf534.gxf5because ofBxf5!35.Rxf5Rg631.Re1Qd332.Re3Qb1+33.Kg2h6 So I got my queen in and managed to stop White's intended Qg5.34.h3?! Some hesitation from Sam, both on the board and the clock.34.Qe7Rfe835.Qd7b436.f5would force me to defend withBf734...b4!An important step forward. Black needs to open a file for his rook to give his active queen some support.35.Qe7bxa336.bxa336.Qxe6+?Bf737.Qd6a2Possibly36.Qxa3Rab837.Qd6Bf738.Ree2was a better choice.36...Rfe8I actually felt quite good about my chances.37.Qh4
37...Rf8but soon I realized I had to repeat.The thing is,37...Rab838.f5Qd1 is a nice counterattack, but Black is only playing for a draw.39.fxg6Rb140.Kg3Qg1+40...Qh1gets destroyed by41.Qf6‼41.Bc5a4and both sides are stuck, with no improvement in sight.41...gxf642.exf6Qg1+42...Rg1+43.Kh443.Rg2Qf144.f7+Kf845.fxe8Q+Kxe846.g7Qf747.Ree2and White calmly brings his rook to f8.41.Rg2Qh142.g5Rf143.Qg4Rf544.gxh6gxh645.Rh2Qg1+46.Rg2being one of the lines that end peacefully.38.Qe7Rfe839.Qd7Rad840.Qa4!?Sevian shows his tremendous fighting spirit.Rb841.f541.c4dxc442.Qxc4Rbc8and facing the threat of Rc1 White has to retreat to the endgame43.Qa2Qxa244.Rxa2=41...exf542.Qd7?It is hard to criticize the players for losing their precision in time trouble.Truth to tell, the objectively best42.gxf5Bh543.Qc2Bf3+44.Rexf3exf3+45.Kxf3is hardly a winning attempt.42...Rbd842...fxg443.e6Rb7!I missed that one.I thought43...Qb7was my only defense, and panicked when I saw44.Rf7!In reality,Qxd745.Rxd7Rb2+46.Kg346.Kg1Rxe647.Rxg7+Kf848.hxg4=46...gxh3is totally fine for Black. This mistake and some others that eventually cost me this game can be explained by my lack of practice playing on the increment. With only 30 seconds left per move one has to trust his intuition more. Instead, I was calculating as hard as I could and then had to play a move before I was able to get to the end of my lines.44.Qxd5gxh3+45.Rxh3e346.Rxe3Rb5and Black is the one attacking.43.Qc6Kh744.gxf5Bh545.Rf1?!45.Kh2!Bf346.Qg6+Kg847.Rexf3exf348.Rxf3±45...Qa2+46.Kg3Rc8I knew I had to hit something with every move.46...Qxa3?47.f647.Qd6Rcd848.Qa6Ra849.Qc6Rac850.Qd7Rcd851.Qa4!?For the second time around Sam makes a very brave decision to avoid repetition.Bf352.Rfxf3exf353.Rxf3Qd254.Qc6Qg5+55.Kh2Rb856.c4Suddenly the bishop covers b2.dxc456...Qd2+does nothing:57.Bf257.Qe4
57...Kh8?First I looked at57...Rb3and thought I was losing after58.f6+Qg659.Qxg6+Kxg660.f7Rf861.Rxb3cxb362.e6To my tired eyes it seemed that Black is helpless, butRxf763.exf7Kxf7is actually a simple draw:64.Kg3g565.Kf365.a4Kg665...h566.Ke4g467.h4a4I didn't have time to consider other moves. Among them57...Qd2+58.Bf258.Rf2Qd359.Qg4Rbd860.Rg2Rg8forcing the bishop off the long diagonal before e5-e6 is played.58...Kh859.f6Rf8was a legitimate winning attempt, but finding such cool moves under extreme pressure from the clock is above my current pay grade.58.Rg3Qd2+?The second mistake loses.58...Qc159.e6Rb2+60.Bxb2Qxb2+61.Rg2=59.Rg2Qd360.Qg4Rg861.e6Too late now.Rb762.f61–0
The Sicilian has been known for decades as the most reliable way for Black to obtain an unbalanced but good position. Among the most popular Sicilians at the top level the two that certainly stand out are the Najdorf and the Paulsen.
Despite the bad finish I really enjoyed this game, and even losing it didn't hurt much. If anything, keeping pace with Sam Sevian for almost 30 moves of mutual time trouble instilled some confidence in me. It paid off immediately as I finished with 3½/4 and managed to join Sam and others in a large tie for equal 4th place.
This is how I did it.
Alex Yermolinsky 1-0 Ruifeng Li
The 16-year old Ruifeng Li has long been in the shadow of his friend Jeffery Xiong. They both come from the Lone Star State, and bright stars they truly are. Ruifeng had a breakthrough year in 2016 when he raised his rating over 100 points to reach the respectable 2580 mark. This year so far has been a bit of a setback (ironically the same goes for Xiong), but, I'm sure it's just growing pains.
When experience outweighs youth, Yermolinksy vs Ruifeng | Photo: Paul Truong
In my preparation I noticed that lately Ruifeng has been a bit too eager to obtain fighting positions with Black, often to the detriment of safety. Our game followed the same script.
New ...
New Game
Edit Game
Setup Position
Open...
PGN
FEN
Share...
Share Board (.png)
Share Board (configure)
Share playable board
Share game as GIF
Notation (PGN)
QR Code
Layout...
Use splitters
Swipe notation/lists
Reading mode
Flip Board
Settings
Move
N
Result
Elo
Players
Replay and check the LiveBook here
Please, wait...
1.Nf3Nf62.c4e63.Nc3d54.d4c65.Bg5h66.Bxf6Qxf67.Qb3Qe7!? This move is the latest addition to a list of known options.7...Nd78.e4dxe49.Nxe4Qf410.Bd3was the World Cup winning game in the Aronian-Ding Liren match.7...a58.e3a4Navara-Ding Liren, Blitz 20167...dxc48.Qxc4Nd79.Rd1Akobian-Shankland, US Championship 2017.8.e4I didn't hesitate much on this one. The main theme of the Moscow Variation is to push e2-e4 in one move.g6!?A novelty.Naturally,8...dxe49.Nxe4Qb4+ is the most solid reply.10.Nc3I thought of a strange possibility of10.Kd1that got me thinking about early king's moves. Soon you will see what came out of that idle speculation.10...Qxb311.axb3g5 Sargissian-Karjakin, World Team Championship 2015.9.exd5I just couldn't resist the temptation.Both9.e5and9.Bd3were normal, solid choices.9...exd5+10.Kd2!?
Here it is, I move my king.10...Bg7? Ruifeng spent some time on this one, but it follows the main line of my calculations.Instead, the best answer was to sac a pawn:10...Qd6! to complete his development with11.cxd5Be712.Bd30-013.Rae1Kg7!13...Rd8allows some unnecessary fireworks:14.Bxg6!etc.14.Kc2cxd515.Qxd5Rd8Black isn't risking much in this situation.11.Re1Be612.cxd5cxd513.Nxd5Qd6Black must take away that f4-square.13...Qd7?14.Nf4+-14.Rxe6+?!"Everything is proceeding as I have foreseen" to quote Emperor Palpatine. We all know where it got him.The engines show the right path:14.Qxb70-015.Rxe6fxe616.Ne7+!I only saw16.Qxa8exd5 which is highly unclear.16...Kf717.Qxa8Qxe718.Bd3is easily winning for White.14...fxe615.Qxb7Qxd516.Qxg7Rf8
This is the position I had in mind before embarking on this whole thing. Contrary to my great expectations, it isn't so decisively winning for White.17.Bd3I figured getting my pieces out was more important than gorging on the pawns. although,17.Qxg6+Ke718.Qxh6Nd719.Bd3Qxa220.Qg5+Kd621.Ke3 doesn't look too bad for White.17...Nd718.Rc1I saw the following exchange sacrifice coming and hoped to keep my advantage.The alternative,18.Ke3would allow Black to intercept the c-file.Rc819.Bxg6+Kd820.Ne5Rc7±21.Nxd7?Qg5+18...Rxf3!19.gxf3Qg5+20.f4Qxf4+21.Kd1Qxf2
Amazingly, I couldn't see a clean path to victory.22.Qxh6Finally I settled on a line that leads to further simplifications.22.Bxg6+Kd823.Qg8+Nf824.Bd322.Rc3!?22...Qxd423.Qxg6+Ke724.Rc4Qxb225.Qh7+Kd626.Qe4Rh827.Rc6+Ke728.Rxe6+Kd829.Qa8+Bailing out too soon.29.h4!Qa1+29...Kc730.Qd530.Bb1Qb231.Qa8+Qb832.Qxb8+Nxb833.Re4±29...Qb830.Qxb8+Nxb831.Re2Under normal circumstances Black should be able to hold, but Ruifeng misjudged the upcoming minor piece ending.Kc7?!31...Nc632.Re7+Kd633.Rh7Rxh7?33...Rg8!34.Bxh7
This position may seem drawish based on one dangerous assumption that Black is going to be able to give his knight for the a-pawn. In my experience, it is not always the case. Fischer-Taimanov, Candidates Match (2), Vancouver 1971 comes to mind first, and then I had a similar endgame against Pavel Blatny in the 2002 National Open.34...Nc635.Kd2Ke5There is a defensive plan of assigning the knight the duty of stopping the h-pawn and keeping the king in the center to impede the progress of the white king:35...Nb436.a3Nd537.h4Ke538.Kd3Nf639.Bg6Kd540.h5Ng441.Kc3Kc542.Kb3Kb5
but then White will operate with Zugzwangs:43.Bf5Nh644.Be6!a544...Ka545.Kc4Ka446.Kd4Kxa347.Ke5Kb448.Kf6Kc549.Kg5Kd650.Ba2Ke751.Kxh6+-44...Kc545.Ka4Kb646.Kb4a647.a4a5+48.Kc4Kc649.Bd5+Kd650.Bf3Nf551.Be4Nh652.Kb5+-45.Kc3Kc546.Kd3Kd647.Bb3Ng448.Kc436.Kc3Kf437.Bg8a5?This only makes White's task easier.38.Kc4Nb439.a4Kg440.Be6+Kh4
41.Kd4+-Clearing out the c4-square for the bishop.Nc2+42.Kc5Nb443.Bc4Total domination: d5, d3 and a2-squares all have been taken away from the hapless knight.Nc244.Kb6Ne345.Bb3Nf146.Kxa5Nxh247.Kb61–0
The positional exchange sacrifice is one of the most powerful and fascinating strategic weapons in chess. On this DVD Sergey Tiviakov explains why the positional exchange sacrifice is such a strong weapon and how to use it.
Alex Yermolinksy 1-0 Priyadharshan Kannappan
A first encounter between Yermolinsky and Priyadarshan | Photo: Paul Truong
This was our first encounter at the chessboard, but I have seen Priyadh at many tournaments. One thing has always confused me, as is often the case with players from India, and that is under which name he might be listed.
In the U.S. Chess Federation databases he goes by Priyadharshan (first name) Kannappan (last name), but ChessBase knows him as the other way around! I'd assume the USCF way is correct, just out of the similarity with other Indian players' names. A clarification from a knowledgeable source would be much appreciated.
New ...
New Game
Edit Game
Setup Position
Open...
PGN
FEN
Share...
Share Board (.png)
Share Board (configure)
Share playable board
Share game as GIF
Notation (PGN)
QR Code
Layout...
Use splitters
Swipe notation/lists
Reading mode
Flip Board
Settings
Move
N
Result
Elo
Players
Position not in LiveBook
Please, wait...
1.Nf3Nf62.c4c53.Nc3Nc64.g3g65.Bg2Bg76.0-00-07.d4cxd48.Nxd4Qa59.Nb3Qh510.Nd5d611.Nf4Inspired by the recent game Grischuk-NavaraQf5!12.e4Qd712...Nxe413.g4Qe514.Re113.Qe2b614.Be3Ba615.Rfd1Rac816.Rac1Rfd8?!One of those do-nothing moves. Much stronger was16...Ne517.Nd2e6and the white knights are a bit out of position for a standard Maroczy Bind play.17.Nd4e5I expected17...Ne5where White should avoid the temptation of winning the exchange with18.Bh3as18.b3e619.f318...Qb719.Bxc8Rxc820.b3Qxe421.f3Qa8would provide Black with ample compensation.18.Nxc6Qxc618...exf4?19.e5Ne820.Nxd8fxe321.Nxf719.Nd5Nxd520.exd5Qe820...Bxc4?21.Qg4Qb522.b3f523.bxc421.b3f5Draw offer22.a4Rb823.Qd2Bc824.a5bxa525.Qxa5Rxb325...f426.gxf4Bg427.Re1Qf728.fxe5Bxe529.c526.Bg5Rd727.c5h627...dxc528.d6Bb729.Qa229.Bf1!Rb230.Bc4+Kh831.Qxc5±29...Qe630.Bxb7Rdxb731.d7Rxd732.Rxd7Rxg3+33.hxg3Qxa234.Rxc5Bf835.Rd828.c6Rf729.Qd8Qxd830.Bxd8Bf631.Bxf6Rxf632.Rb1Rxb133.Rxb1Rf734.f4exf435.gxf4Rc736.h4Kf737.Kf2Kf638.Kg3Re739.Rb8Rc740.Bf1Kg741.Bd3Kf642.Ra8Kg743.Rb8Kf644.Kf3Ke7?45.h5+-gxh545...g546.fxg5hxg547.h6Kf648.h7Rxh749.Rxc8Ke550.Kg2Kxd551.Bxf5Re752.Bd746.Kg3Kf647.Kh4Kg648.Ra8Kf649.Kxh5Kg750.Rb8Kf651.Bc2Kg752.Ra8Kf653.Kxh6a554.Ba4Ke755.Kg5Kd856.Bc2Rg7+57.Kf6Rg858.Kf7Rh859.Bxf5Kc760.Bxc8Rxc861.Rxa5Kb662.Ra1Kc563.Rd11–0
Williams main teaching method behind this set of two DVDs is to teach you some simple yet effective set ups, without the need to rely on memorising numerous complicated variations.
In the end I easily captured the top Senior prize, along with a share of regular prize money.
A deeelighted Alex Yermolinsky collects his winnings | Photo: Paul Truong
Growing up as an aspiring young player I had my share of doubts about choosing chess as a career. This picture alone (regardless of the size of the check in the envelope) spells REDEMPTION. Here I am, flanked by two beautiful ladies, wearing a ****-eating grin on my face. Life is good.
Final Standings
Click or tap to enlarge table
The top three winners: Lazaro Bruzon Batista (center), Yunieska Quesada, and Dariusz Swiercz
Alex YermolinskyYermo is enjoying his fifties. Lives in South Dakota, 600 miles way from the nearest grandmaster. Between his chess work online he plays snooker and spends time outdoors - happy as a clam.
The free app from ChessBase! ChessBase Mobile has everything you need as a chess player on the go:
access your chess data in cloud databases - and 13 million games.
Whether it’s a weak pawn, a vulnerable king, or poor piece coordination, this course will teach you how to pinpoint the critical targets, prioritise your attack, and execute a clear, effective plan.
Videos by Nico Zwirs: Nimzo-Indian with 4.e3 b6 and Robert Ris: French Advance Variation with 6.Na3. Alexander Donchenko analyses his winning game against Fabiano Caruana from the Saint Louis Masters 2024. “Lucky bag" with another 43 analyses by Edouard,
The Black Sniper is back – sharper and deadlier than ever! This dynamic system (1...g6, 2...Bg7, 3...c5 against 1.e4, 1.d4 and 1.c4) creates unpredictable, high-pressure positions, leaving opponents struggling to adapt.
YOUR EASY ACCESS TO OPENING THEORY: Whether you want to build up a reliable and powerful opening repertoire or find new opening ideas for your existing repertoire, the Opening Encyclopaedia covers the entire opening theory on one product.
The King‘s Indian Attack is a universal opening: easy to learn, flexible, and rich in both tactical and positional opportunities.
€39.90
We use cookies and comparable technologies to provide certain functions, to improve the user experience and to offer interest-oriented content. Depending on their intended use, analysis cookies and marketing cookies may be used in addition to technically required cookies. Here you can make detailed settings or revoke your consent (if necessary partially) with effect for the future. Further information can be found in our data protection declaration.
Pop-up for detailed settings
We use cookies and comparable technologies to provide certain functions, to improve the user experience and to offer interest-oriented content. Depending on their intended use, cookies may be used in addition to technically required cookies, analysis cookies and marketing cookies. You can decide which cookies to use by selecting the appropriate options below. Please note that your selection may affect the functionality of the service. Further information can be found in our privacy policy.
Technically required cookies
Technically required cookies: so that you can navigate and use the basic functions and store preferences.
Analysis Cookies
To help us determine how visitors interact with our website to improve the user experience.
Marketing-Cookies
To help us offer and evaluate relevant content and interesting and appropriate advertisement.