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Ragnar Krogius vs Antti G Ojanen
"Ragnar Rock" (game of the day Nov-27-2011)
Helsinki (1944), Helsinki FIN
Sicilian Defense: Morphy Gambit. Andreaschek Gambit (B21)  ·  1-0


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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 4 OF 4 ·  Later Kibitzing>
Feb-21-17  Autoreparaturwerkbau: I must be blind but what happens in game line after <11...Kxe4> (king taking pawn)?
Feb-21-17  cocker: Seems to have been a sudden increase in difficulty this week. Means the rest of the week will be beyond me.
Premium Chessgames Member
  thegoodanarchist: <FSR: What the heck is Ragnar Rock?>

Ragnarök is a battle at the end of the world, in Norse mythology, IIRC.

Premium Chessgames Member
  moronovich: <Autoreparaturwerkbau: I must be blind but what happens in game line after <11...Kxe4> (king taking pawn)?>

0-0-0,followed by RHe1+ mating.The BKing is "in a box".A mating net.

Premium Chessgames Member
  morfishine: By move <6> White has 3 minors developed while Black has zero

Of course we can sacrifice on <f7>


Feb-21-17  schachfuchs: To make things short, I was going for 9.Ng6+ after Ke7.

Anyway, I think this puzzle is more Tuesday adequate than it was yesterday's Monday ;-)

Feb-21-17  tatarch: <moronovich: <Autoreparaturwerkbau: I must be blind but what happens in game line after <11...Kxe4> (king taking pawn)?>

0-0-0,followed by RHe1+ mating.The BKing is "in a box".A mating net.>

Maybe 12.Nc3+ first, since white queen is hanging? Not sure on quickest mate but black looks pretty boxed in.

Feb-21-17  steinitzfan: I was at first attracted to 12 O-O-O+. I think 12 Rd1+ is actually clearer though. Keeping the c1 square open for the rook can be valuable. The game line is fine though. There are probably other ways to win as well.
Premium Chessgames Member
  agb2002: White is one pawn down.

The first idea that comes to mind is 7.Nxe5 dxe5 8.Bxf7+ Ke7 (8... Kxf7 9.Qxd8 + -) but it's not clear how to continue.

Reversing the move order yields 7.Bxf7+ Kxf7 (else Qb3 with identical material but an overwhelming position) 8.Nxe5+:

A) 8... Ke8 9.Qh5+ and mate in two.

B) 8... Ke7

B.1) 9.Ng6+ followed by Nxh8 looks winning.

B.2) 9.Nd5+ Ke6 (9... Ke8 10.Qh5+ as in A) 10.Qg4+ Kxe5 11.Bf4+

B.2.a) 11... Kd4 12.Be3+ Kd3 (12... Kc4 13.Qe2#; 12... Ke5 13.Qf4+ Ke6 14.Qf5#) 13.Rf1+ Kc2(4) 14.Qe2#.

B.2.b) 11... Kxe4 12.Nc3+ Kd4 (12... Kd3 13.Qe2+ Kd4 14.Rd1+ Kc5 15.Qb5#) 13.Be3+ Ke5 (13... Kd3 14.Qe2#) 14.Bd4#.

C) 8... Ke6 9.Qd5+ Kf6 (9... Ke7 10.Qf7#) 10.Qf7+ Kxe5 11.Bf4+ Kd4 12.Qd5#.

D) 8... Kf6 9.Qd4 (threatens Nc6+)

D.1) 9... dxe5 10.Qxd8 + - [Q+P vs B+N].

D.2) 9... Nc6 10.Nxc6+ wins.

D.3) 9... Qa5 10.Nc6+ wins.

D.3) 9... Qb6 10.Nd7+ wins.

D.4) 9... Qc7 10.Nd5+ wins.

D.5) 9... Qe8 10.Nd5+ Ke6 11.Nc7+ Ke7 12.Nxe8 wins decisive material (12... dxe5 13.Qxe5+ Be6 14.Nxg7).

D.6) 9... Ke6 10.Qd5+ as in C.

D.7) 9... Ke7 10.Ng6+ as in B.

E) 8... dxe5 9.Qxd8 + - [Q+P vs B+N].

Feb-21-17  Carlos0012358: This puzzle is less about the solution and more about how black got himself in that shape after only 7 moves. Neither do these two were pre-war wizards, but Antti must have had a rough night before this game.
Feb-21-17  zb2cr: I saw the first two moves, but got hung up on White response to 8. ... Kf6. Not enough time this morning, so I gave up.
Feb-21-17  belgradegambit: Not a Tuesday level problem.
Feb-21-17  Pedro.Akcio: I saw Bxf7, but I went for Nxe5 first...only to realize that Qxd8+ is a blunder, and the line with Bxf7 is not as effective after the sacrifice even though white still has compensation
Feb-21-17  The Kings Domain: Neat puzzle and a memorable game.
Premium Chessgames Member
  catlover: <belgradegambit: Not a Tuesday level problem.>

Yeah, I thought maybe I overslept and woke up on Friday.

Premium Chessgames Member
  whiteshark: Boom Bang.... ♫♪
Feb-21-17  drollere: <I must be blind but what happens in game line after <11...Kxe4> (king taking pawn)?>

something at least as bad as 12. Bg5+ winning the Q at leisure.

Premium Chessgames Member
  keypusher: < drollere: <I must be blind but what happens in game line after <11...Kxe4> (king taking pawn)?> something at least as bad as 12. Bg5+ winning the Q at leisure.>

12.Nc3+ mates in a few moves.

Feb-21-17  drollere: <belgradegambit: Not a Tuesday level problem.>

Bxf7+ followed by a N check and a Q attack is a pretty standard family of trappy opening hazards for black in a traditional Kp opening. often the N check is at g5 but either way the KN moves to the 5th rank to open the white diagonal for the Q.

you can't predict what happens after the N check because it all depends on black's answer. so i'd assume the "easy" aspect of the puzzle was to see Bf7+ as the obvious move in this position.

Premium Chessgames Member
  kevin86: Black pieces never left the back row.
Premium Chessgames Member
  beenthere240: Black must have felt proud about 3...e5 ("Ohhhh I hope he takes it!"
Feb-21-17  Sularus: the old Bxf7+ trick
Premium Chessgames Member
  PhilFeeley: <cocker: Seems to have been a sudden increase in difficulty this week. Means the rest of the week will be beyond me.> Maybe he's just run out of easy ones. I've been on this site for 5 years now and with posting 52 to 104 easy ones a year, he was bound to run out of them sometime. After all, aren't most of the games here supposed to be by people who know how to play the game?
Dec-14-17  SoDark: Even if black brings out knight to defend, 3...Nc6 4. Nxd4 e5 5. c3 exd4 6. cxd4 d6 7. Nc3

Full central dominance and development for the exchange.

Dec-14-17  SoDark: From there

3...Nc6 4. Nxd4 e5 5. c3 exd4 6. cxd4 h6 7. Nc3 Bb4 8. Bc4 Nf6 9. a3 Ba5 10. f3 O-O 11. O-O

White has a beautiful pawn structure, and spacial advantage. In blitz one may calculate till if Nxd4, Black cannot NxNd4 as QxD4 and eventually play the pawn forward.

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