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Raouf Gadjily vs Mel O'Cinneide
EUR-chT (Men) 11th (1997), Pula CRO, rd 8, May-??
Scandinavian Defense: Classical Variation (B01)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Sep-06-17  Cheapo by the Dozen: <al wazir>, I think that's overstated. White already had an advantage in pawn structure, and he was literally pushing for more.
Sep-06-17
Premium Chessgames Member
  PawnSac: About 20 seconds after I saw this puzzle on the front page I started grinning because I realized CG tossed us another pawn promotion problem along the order of yesterday's Shirov-Short game. Of course that one was stronger, and black doesn't have to go along with it in this game. But its a cute idea to know.
Sep-06-17  stst: Main line goes
26.dxe RxR
27.RxR RxR
28.e7....
but of course
27........Re8 creates other variations, example: 28.e7 RxP ==> Rd8+ etc...
Sep-06-17
Premium Chessgames Member
  WorstPlayerEver: Too easy. Although GMs fall for even easier ones.
Sep-06-17  Cybe: Simply 25... Kg7.
Sep-06-17  gofer: Another simple "pawn promotion" POTD, but with a twist. The promotion is not certain.

<26 dxe6 Rxd3>
<27 Rxd3 ...>

Black cannot take back due to <28 e7> which wins immediately. But black doesn't have to take back immediately...

27 ... Rb8/Rf8 (trying to keep both rooks on the board)

28 e7 +-

<27 ... Re8>

<28 exf7+ Kxf7>

<29 Rd7+ Re7>

<30 Rxe7 Kxe7>


click for larger view

White moves swiftly into a winning endgame... ...without the rooks on the board the outcome is clear.

Sep-06-17  AlicesKnight: Quick - 26.dxe6 Rxd3; 27.Rxd3 Rxd3; 27.e7 and queens.

Slower - 26.dxe6 Rxd3; 27.Rxd3 Re8; 28.exf7+ Kxf7; 29.Rd7+ either winning 1-2 Ps or exchanging Rs when the broken K-side will lose for Black.

Oh! - Black played for a quick death.

Sep-06-17  radtop: I haven't done well lately, but this was a snap. Was 20...g3 Black's mistake? I thought 20....Qc7 better.
Sep-06-17  claudi: 27...Re8 is the best move for blacks
Sep-06-17  gofer: Anyone not 100% sure of the endgame win can practice against <Crafty>.


click for larger view

<31 ...?>

http://www.chessvideos.tv/endgame-t...

Sep-06-17  patzer2: For today's (26. ?) Wednesday puzzle, I saw the game continuation 26. dxe6 Rxd3 27. 27.Rxd3 Rxd3 28. e7! +- (+8.70 @ 30 depth, Stockfish 8,) which avoids the tempting blunder 28. Ke2?? (diagram below.)


click for larger view

After 28. Ke2?? (diagram above,) Black turns the tables and steals the win from White with 28...Rd6 -+ (-11.09 @ 29 depth, Stockfish 8) due to the Rook fork tactic threat 29. e7 Re7+ 30. Kd2 Rxe7 -+ (-10.07 @ 31 depth, Stockfish 8.)

However I don't give myself full credit for the solution, because I didn't calculate or even consider the stronger continuation 27...Re8 28. exf7+ Kxf7 29. Rd7+ Kg6 30. Rxb7 a5 +- (+3.95 @ 37 depth, Stockfish 8) in the diagram below:


click for larger view

This position, (diagram above) with White to move (31. ?), is a Rook and Pawn ending which is easy for strong endgame players or computers to win, but it might not be so easy for weak endgame club players or novices to score the full point.

P.S.: Black's decisive blunder was 25...Rfd8??, which allows today's Wednesday puzzle solution 26. dxe6! +-. Instead, 25...Kg7 26. dxe6 Rxd3 27. Rxd3 fxe6 33. Ke2 = (+0.04 @ 35 depth, Stockfish 8) holds it level.

Sep-06-17  morfishine: <27...Rxd3> is a horrendous blooper

<27...Re8> defends much better, though he'll probably lose anyways being a pawn down

*****

Sep-06-17  malt: Come up with
26.de6 R:d3 27.R:d3 Re8
28.ef7+ K:f7 29.Rd7+
Sep-06-17  Lambda: 26. dxe6! Firstly, the pressure from the doubled rooks along the d-file makes 26... Rxd3 27. Rxd3 unavoidable, anything else will drop a rook very simply. Now the rook on d8 is under attack, 27... Rxd3 loses to 28. e7 and the pawn is unstoppable, and it obviously doesn't want to move to other places on the d-file. Most rook moves along the back rank lose to 28. e7 making 29. Rd8 an irresistible threat due to the position of the black king and its inability to approach a pawn on e7. The best defence is 27... Re8 covering e7, but after 28. exf7+ Kxf7 29. Rd7+ black faces a choice between entering a king and pawn ending a pawn down with 29... Re7, and entering a rook and pawn ending two pawns down with a king move, which will be responded to by 30. Rxb7.

Basic endgame theory tells us that in a normal position, an extra pawn is enough to win a king and pawn ending and two extra pawns are enough to win a rook and pawn ending, and those positions all look pretty normal, no incredibly active black rook or anything, so we're happy.

Sep-06-17  Altairvega: Pawn promotion of the theme of the week? and the Rooks stay helpless...
Sep-06-17
Premium Chessgames Member
  WorstPlayerEver: The pawn is the weakest object in chess, but it also is its nuclear missile.

Without pawns, we do speak of 'known endgames.'

👸🎅

Sep-06-17  NBZ: dxe6! Rxd3 Rxd3 Re8 (Rxd3 e7) exf7+ Kxf7 Rd7+ should win comfortably: the rook on the 7th rank is monstrous in this position, and White will be up two pawns in the rook ending, while the K+P ending is won for White.
Sep-06-17
Premium Chessgames Member
  kevin86: The perfect pawn position at e7- shuts out the rook and keeps the king away!
Sep-06-17  swclark25: Also, trying to see how Black could avoid pawn promotion and stay in the game...

On 27)...Re8, looks like White's follow with 28)exf7+ would then fork Rook and King ?? Am I missing something?

per <Cybe> 25)...Kg7 seems better than Black's game move

Would 25)...Rxd5 be better? Removes the immediate pawn threat and likely results in trading one Rook each.

Sep-06-17  swclark25: Nevermind about my 27)...Re8 question. I see my mistake...

Is 25)...Rxd5 valid?

____

Sep-06-17
Premium Chessgames Member
  OhioChessFan: <swc: Is 25)...Rxd5 valid?>

Yes, much better. Rc7 or Kg7 would also have been much better than the move played. I think Black's 25th was his losing move.

Sep-06-17  swclark25: <OhioChessFan> thanks for your reply. I also thought that moving the rook over to the open c-file would be a good option and get it out of traffic.
Sep-06-17  Mendrys: <al wazir: White didn't deserve this win. I don't just mean that he won because of black's blunder. There was no stage of the game prior to the 20th move where white had any advantage. It ought to have been a draw.> Of course he deserved to win this game. He had a comfortable game and made aggressive moves that gave his opponent opportunities to make "bad" moves like 25...Rfd8? which, at first glance, would seem to be a natural move to make.
Sep-06-17  Cheapo by the Dozen: <morfishine> is correct up to a point. But as <gofer> points out, the resulting endgame is a very easy one.

Also, absent the puzzle solution, White was in line to actually be a pawn down.

Sep-10-17  notyetagm: R Gadjily vs M O'Cinneide, 1997

26 ?


click for larger view

26 d5xe6!+-


click for larger view

26 ...♖d7x♖d3 27 ♖d1x♖d3 ♖d8x♖d3 28 e6-e7! 1-0


click for larger view

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