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Tony Miles vs Harold James Plaskett
ENG (1983)
English Opening: King's English. Two Knights' Variation Smyslov System (A22)  ·  1-0



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sac: 16.cxb4 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Feb-20-13  Castleinthesky: I solved it, but don't see why 18. Qc3 is necessary, is there any problem going directly to 18.Ra1?
Premium Chessgames Member
  keypusher: Saw the puzzle continuation readily enough, but 17....Qe1!!. What a move! Wouldn't spot it in a hundred years. Maybe next time.
Feb-20-13  James D Flynn: Material is equal but that clearing is going to change in the next few moves with the Black N on b 4 attacking the White Q. If the N is taken the White R on a1 is en prise but taking it leaves the Black Q with few squares and subject to attack by a B move: 16.cxb4 Qxa1 now 17.Bb2 leaves the Q with only Qxa2 when Ra1 traps the Black Q. However after 16.cxb4 Qxa1 17.Bb2 Qxa2 18.Ra1 loses because Qxa1 ,.19.Bxa1 Re1+ 20.Bf1 Bh3 and the only defense to avoid mate is 21.Qe2 Rxe2 and the B on e2 cannot be moved because Re1+ leads to mate and cannot be defended so Black emerges a R up,. Unfortunately for Black the interpolation 18.Qc3 threatens mate on g7 and defends the e1 square. After 16.cxb4 Qxa1 17.Bb2 Qxa2 18.Qc3 f6 19.Ra1 Qxa1+ 20.Bxa1 White has won Q and N for 2 Rs and pawn. With Q , 2Bs and 6 pawns versus 2 Rs, B, and 7 pawns White should ultimately prevail but there is plenty of play in the position yet.
Feb-20-13  Dr. J: <lost in space: 17...Qe1!!>

Well done, sir! You fully deserve the two exclamation points you awarded it.

Feb-20-13  snakebyt: best first move is to get my Q out of check and take the PxN. Blk Q can take the Rook but this would block her in after Bb2. Blk Q could drop down the efile to sac and press with trailing Rook. But wht Bishop on g2 will protect. Blk Q could retreat back to e7 but what fun would that be? After Q takes R it becomes nigh impossible for a blk win.
Feb-20-13  kevin86: The rook is a trap for the enemy queen.
Premium Chessgames Member
  chrisowen: At get going have thinking about it double at in dig a kaftan 16.cxb4 pulls the rug over now in b4 sacrificed black must continue the trend and plug in the gap ago for queen in geed up horsey shell committed in a crimes 16...Qxa1 done the deed ask in question can she be trapped?

I would wager go joke quagmire no a brainer 17.bb2 bind and weave it is let in very good shot, Qe1! path in glazed over straight free formula rookxf1 rookxf1 routed bishop in I balancing 19.bf1 bh3 the books swing in blacks favour fab sherbet dip dab.

Premium Chessgames Member
  chrisowen: Catch l0 in seek queen truth a opening 17...Qxa2 duty it now good nut in a redeploy 18.Qc3 hand over straight a bee-line 18...f6 to block long diagonal one togethers 19.ra1 windows queen trap in a2,

get to the point a move like e1 never croses my mind as an equaliser vantage still in whites court though,

it taboo knowledge rut in black I account 17...Qe1 18.Bxg7 Qxb4 19.Bxh6 pawn down exchange up in bit IE went south,

freedin feed corner bed rooks had well sth6 in chapel the green hangar true tomahawk ford river e1 b4 at im in both work for aimed again ways it honour in good game tock queens and bishop having into booth again truth i storage 17.bb2 angle building concrete again diagonal cart before freedom reign it down on meticular otb in whine,

why not e1 then,

daccord kill off c3 copt a lot in a2 blot he door,

have a barny 15...Nb4 hold in just go did you the point in boo 2a ghost riding hammers 17...Qxa2 that left him on his tod it dynamo in he ment try e1 free dig play it is around in ground picking slim in a2 tour be footed at eddy in bared knight blow in first inflate 17.bb2 Qxa2 in arm you hid queen free the beast bad judgement 18.Qc3 a dence rising mid difficult for me it I snip f6 shot in see boot up knight effect rook i rasatabla 19.ra1 queen at aim incede the point aid in club have duty it e1 rat packs in tracks a1 gain cruise.

Feb-20-13  howlwolf: I think the problem with this problem is somewhat Pavlovian; for a Wednesday puzzle you expect a wednesday solution or at the most a Wednesday spoiler. If this had been Friday or Saturday I might well have looked hard enough to find Qe1, instead I looked thirty seconds and found the moves played in the game; I wonder what Miles saw?
Feb-20-13  howlwolf: It is a shame that GM Miles is not here to tell us what he saw; perhaps GM Plaskett might reveal the results of any post-mortem.
Feb-20-13  Marmot PFL: Found the game solution quickly, but it seems black missed a probable draw. maybe Miles had seen it but was gambling that black would not.
Feb-20-13  Marmot PFL: Oddly enough the first 9 moves follow a game I played as black many years ago. I missed a winning exchange sac on e3 (saw it, but lacked the nerve to play it, game ended in draw). Still remember that as I would have finished =1st with 1 other player.
Feb-20-13  BOSTER: <Playing 15...Nb4 forking white queen on c2 and pawn d5 Plaskett initiated a cat and mouse game with Miles, and Miles decided to take part.

<OhioChessFan> in your diagram, where you said <...20 Qa6 and black is more than fine>. After 21.Qb2 black can't protect his king's side.
Best for black is a draw.

Feb-20-13  morfishine: Plaskett is still around. Why don't we ask him? <CG> has been very useful in the past reaching out to GM's
Premium Chessgames Member
  Once: <Abdel Irada> For me, the difference between a spoiler and a spoiled puzzle is whether CG intended it or not.

A spoiler is when CG gives us a tempting tactic that doesn't quite work. The idea is to keep us on our toes and analysing all the way to the end. Otherwise we might think that every half-way promising tactic will work "cos it's a puzzle". Usually (but not always) the point of a spoiler is to sidestep the tempting but flawed variation and play instead one of a number of quieter alternatives.

On the other hand, a spoiled puzzle is when there is a nuance to the position that CG didn't intend. In today's POTD, 16. cxb4 does appear to be the best move, but it does not crush against best play as convincingly as it does in the game continuation. Black defends with 17...Qe1 but white keeps a small edge with 18. Bxg7.

So it seems that 16. cxb4 is the correct solution to the puzzle, which takes us out of the realm of a spoiler. But the complications of 17...Qe1 and 18. Bxg7 seem to suggest that it is a harder puzzle than a typical wednesday. Hence the suggestion that CG didn't intend all of this.

In other words, spoiled instead of a deliberate spoiler.

Premium Chessgames Member
  Once: <Oxspawn> A combination of lots of work plus a couple of non chess projects has meant that I haven't got as much time as usual for kibitzing, I'm afraid. I usually lurk on a daily basis but posting more infrequently these days.
Feb-20-13  Treestar: I expended a Wednesday amount of time to see the game continuation and decided to play it out against the computer to see if it would decline the offer of the rook. I thought it wouldn't take the rook unless it had a good counter to <Bb2>, and sure enuf came <Qe1!!> Wow. Agree with the comments CG didn't intend. <Qe1> takes it to another level.
Feb-20-13  BlackSheep: I found the game continuation and was satisfied that was that with it being Wednesday an' all but the comments here really opened a can of worms with Qe1 and Bxg7 , kibitzer of the day goes to <lost in space> for revealing the line to the rest of us so the boffins could go to work on the variations .
Feb-20-13  talsqueen: Fabulous! except that I didnt see it.
Feb-20-13  BOSTER: Why Fritz and Houdini don't like 18...Re2 after 18.Bxg7?
Feb-20-13  BraveUlysses: <Once> re Fritz's analysis following the the brilliant try 17...Qe1!! after 18.Bg7, white is not nominally a pawn up, he is an exchange minus a pawn down in material terms. The black king's cage is destroyed and as you say white has better attacking chances in the short term. I'd rather be black though, because the white Q side pawns are sitting ducks and the endgame will be heavily in black's favour.

CG haven't yet admitted this puzzle is officially "spoiled"...!

Premium Chessgames Member
  OhioChessFan: <Boster> yes, I am not having luck following up for Black after Qb2 in the line under discussion. Black's best appears to be to give back the exchange on e4 which seems drawish.
Feb-20-13  zb2cr: To <Castleinthesky>:

18. Qc3 first is necessary because if 18. Ra1, Qxa1+; 19. Bxa1, Re1+; 20. Bf1, Bh3! and White loses.

Feb-20-13  Abdel Irada: <Once>: Ah. Thank you for clarifying your "spoiler"/"spoiled" distinction: a matter of intentionality.
Feb-21-13  morfishine: <Once> I like your line of reasoning; not only for its clarity, but selfish me can claim a measure of satisfaction having solved the puzzle, albeit 'pre-spoiled'
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