|
< Earlier Kibitzing · PAGE 3 OF 3 ·
Later Kibitzing> |
| Aug-21-15 | | aporia: 21. ... a7-a5 won't help? |
 |
Aug-21-15
 | | diagonalley: hmmmm .... i went for 19.P-Q6 - as did <stst> - and (as far as i can make out) it works... with white's KB subsequently coming into play |
|
| Aug-21-15 | | Ehrenfest: 21. .... a7-a5 crossed my mind as well, but then 22. ed6x and the blavk queen is overburdened. She cannot protect both a5 and b7 anymore. |
|
Aug-21-15
 | | mike1: got the game continuation but am now that sure anymore. how does White win after 18. Bxc5 dxc5 19. e5 Bc6?
20 dxc6 b6 is not that clear, or? |
|
Aug-21-15
 | | ajile: 21.Ra3 mates in 5. 21.Qa3 only mates in 9. |
|
Aug-21-15
| | ajile: Note: The move I picked in this line 21.exd6 also wins but is slower to the finish. |
|
Aug-21-15
 | | Boerboel Guy: <mike1: got the game continuation but am now that sure anymore. how does White win after 18. Bxc5 dxc5 19. e5 Bc6? 20 dxc6 b6 is not that clear, or?> How about 21 Rxb6! |
|
Aug-21-15
 | | gofer: Compared to yesterday this is a walk in the park. Black's got a gun to
his head and white just needs to pull the trigger...
<18 Bxc5 ...>
18 ... Qxc5/Qa5
19 Rxb7 mating or winning the queen
18 ... Nh6
19 Bxa7  (Kxb7 20 Qa3+ mating)
18 ... dxc5
19 e5
black cannot stop white opening up the a8-h1 diagonal for its bishop to make it
a 4 against 3 attack on Pb7.
Example 1
19 ... fxe5/Na6
20 d6
Example 2
19 ... Bc6
20 dxc6 b6
21 Rd1!
Example 3
19 ... Bc8
20 d6 exd6
21 Qa3! threatening Qxa7 mating
I imagine that black tries this last option and d6 kills him dead.
But there is an alternative.
<18 ... b5>
<19 Bxa7! ...>
19 ... Qxa7
20 Ra6
19 ... Rb7
20 Bd4
<19 ... Kxa7>
<20 cxb5 ...>
White has traded its bishop for three pawns and a huge pawn storm - which
looks like a win to me...
click for larger view~~~
I thought <18 ... b5> was more fun, suicidal, but fun. |
|
| Aug-21-15 | | dTal: The first move is obvious, but the sequence of pawn moves is a bit tricky. I thought of d6 instead of e5 first, but actually that gives time for Black to get his B to c6 and muddy the waters a little bit, eg: 19. d6 ed 20. e5 Bc6 21. ed Qd7 May still work after Qa3 but messier. 21. Qa3 is really a star move, and illustrates the hopelessness of Black' position. I agree that this is potentially easier to see than yesterday's, as the sac of the B to open lines for such a strong attack is something I would probably do without calculating everything in a game. |
|
Aug-21-15
 | | morfishine: I saw the theme but couldn't visualize the correct move-order, namely wanting to put something on <a3> too early :( |
|
Aug-21-15
 | | agb2002: White has the bishop pair for a bishop and a knight. The black queen defends b7 and the pawn on d6 stops White's d-pawn which blocks the a8-h1 diagonal. Therefore, 18.Bxc5: A) 18... Qxc5 19.Rxb7 Bb5 (19... Nh6 or 19... Qc8 20.Rxb8+ Q(R)xb8 21.Qxb8#; 19... Qb6 20.Rxb6 + - [Q+2P vs R+N]) 20.Rxb8+ Kxb8 21.cxb5 + - [B+2P vs N]. B) 18... dxc5 19.e5 (19.d6 exd6 20.e5 Bc6)
B.1) 19... Qxe5 20.d6 Bc8 (20... Bc6 21.Bxc6 + -) 21.d7 (21.Bxb7+ Bxb7 22.Rxb7 Qe1+ is a bit unpleasant) looks winning. B.2) 19... fxe5 20.d6, with the double threat 21.dxc7 and 21.Bxb7+, wins. B.3) 19... Qc8 20.e6 Bc8 (20... Bxe6 21.dxe6 and b7 is defenseless and the game over) 21.d6 Bc6 22.d7 Qc7 23.Bxc6 Qxc6 (23... bxc6 24.Rxb8#) 24.Rxb7 Qxb7 (24... Rxb7 25.d8=Q+) 25.Qxb7+ and mate in two. B.4) 19... Bc6 20.dxc6 b6 (20... bxc6 21.Rxb8+ Qxb8 22.Qxb8#) 21.Qa3 and the triple threat 22.Qxa7+, 22.Rxb6 and 22.Qxc5 seems to win. For example, 21... Nh6 22.Qxa7+ Qxa7 (22... Kxa7 23.Ra3#) 23.c7+ Rb7 (23... Qb7 24.Ra3#) 24.c8=Q+ Qb8 25.Ra3#. C) 18... Nh6 19.Bxa7 is disastrous.
D) 18... b6 19.Be3
D.1) 19... Qxc4 20.Bxb6 Rxb6 (20... axb6 21.Qa3+ Kb7 22.Rxb6+ wins) 21.Rxb6 axb6 22.Qxb6 Qc8 23.Qa5+ Qa6 24.Qxa6#. D.2) 19... h5 20.c5 looks very bad for Black. |
|
Aug-21-15
 | | Willber G: I went for 18.Ra1 to prepare for a push of the a pawn in order to break through on the a file. I don't know if it will work. |
|
| Aug-21-15 | | Hans Kastorp: <ajile: 21.Ra3 mates in 5. 21.Qa3 only mates in 9.> <aporia: 21. ... a7-a5 won't help?> Whites threat is 22.Qxa7 with following Ra3#. 21. ... a5 doesn't help because of 22.Rb6. |
|
Aug-21-15
 | | thegoodanarchist: Seems like reversal week to me. Monday and Tuesday puzzles should have been switched, and this [Friday] puzzle was easier (for me) than yesterday's. Can't believe I got this one so quickly, or even at all, considering I am a USCF class A player and so a patzer. |
|
Aug-21-15
 | | chrisowen: Bid e3 in takes pawn and as way ahead bruv can win buffs c6 queen or if a milly a6 or b6 then still has c4 push in reserve aline on dib bid black at sixes and sevens bid dib wibble b7 in sight
rook as wheel in later or a3 slide and white should have mate in efforts calls about then calm good wide lib lid well law i bawl club
thump lad callous again wall ace it cede in
clinches accumulate by degrees again call cab c4 and creak vociferous again fine from run mins over ignoble sag game maze it zip in zag haze brave spark have or donkey in light at wins e5 room elines and mate then is due to bend around then corners over slab balls and labs sub im bull shine off rook in b3 emperor bishop in am glide sac for won am first guffaw in heartily am fly in a glorify oh door aim dead i dipoff am got cutoffs point line link delve if ive this left every am good ploy in devious again am gain eline after padre strike at heart pawn disembowel free ebony stuck ive go at a dutiful mission select over am hood wink i cutoffs point in cad to cap again line pawn recind off each alive no more i et tu brute in uniform appraisal lines fluffs am b8 in beeline quoff b6 angle good to keep out for inclusive a while banters around b-lines blocked it edict in have spark a bone of contention am plugs b8 bad angle behemoths bridge give spark b6 into action and keep tight set b-colomns as carry in light padre after am b8 bad angle bullshine and band-rush arrives bullseyes among b6 much i better glide off mock com pigeon coup deaf fade in b3 amble good b8
rook river bad in e3 then takes pawn and black collapses low in ever aid almighty ramble give spark i ebb an flow curious b8 in doubt bullrushy efforts band-have angle b6 much i better glide off an ebony safe for a while then am a behemoth 18.Bxc5 dxc5 or i harangue 18...a6 wins a pawn and still ave in has c4 at achtungs baby in reserve signs are plain ever am white win each in effort ramble give a pushahead 19.e5 Bc8 mate in ten trains am give or nine i prefferal 19...fxe5 20.d6 Qc6 wins a c6 queen an boot 20.d6 mate in nine vine or donkey up in light eight then a foilable mission serves band da vide ide babel tower am b3 an heavy loads along b-colomns aloof an a3 slain mate in six a cut i curry favour ave in a while go build ive plans mind rove band crack oh dase hush aim dash squares over try around black b6 angle betters am guild a while can fight and vet again wriggles son am slide b8 arrives behemoth error allow in padre takes pawn and push e5 at wins queen c6 or mates d6 too strong again am a3 change ever an mate in six
ok ave ogles in son am good bishop sac can
win wash cite vet cinch height ramble give e5 eline spark d6 as wall dangles serve in blew away am foots wallowed it edict in have hive
spark i safe rides and slides scud afar barge mind rove alive any am hi on mall etc inter glide fret band schooner ide hire him bodes
well in sense me roof bang deline ie shin band pond i engage as i i captain said ive then cage flow an cog flung am fag catch eg win clung fane free barge date cab under am cab you rove stable caughts band in level until am b8 angle b6 much i better glide an
dank and dusty sprung coil ha but cub alive no more buck and call auld gate almighty majesty trap both am b3 an a3 mate is due in booth am bar field far bargain fur ruffle go build vain vamoose b8 vanquish baby babel towers am band da key in light call ado adorn dove tail dote an don in e3 takes pawn am retake among a6 still has c4 push am good then e5 and takes pawn wins am queen c6 way ahead in material ive in blew ash c8 in push ahead d6 angle so mate in nine or ive then eight |
|
Aug-21-15
 | | johnlspouge: < <ALEXIN> wrote: I thought 18.e5 ?! so missed. > Interestingly, nobody has yet analyzed 18.e5. Most solutions are therefore probably conditioned on solving a puzzle. Stockfish shows that 18.e5 permits 18...Bf5, which 18.Bxc4 does not. In this case, there is a specific reason to play the sacrifice without the preparatory move. |
|
Aug-21-15
 | | kevin86: Black is really tied up. The center pawns and the triple forces on the b-file make the game untenable. The pressure will end this one soon in checkmate. |
|
Aug-21-15
 | | beenthere240: I will remember that tactic. Simply point out to your opponent: "You are really tied up. Your pawns are weak and my lineup on the b file makes your game untenable. I suggest you resign before my pressure leads to your checkmate." |
|
| Aug-21-15 | | Pedro Fernandez: It is not difficult (no more than a minute) to see that the only move to get progress is 18.Bxc5! in order to get mobility of the powerful white central pawns (which, in turns, lets to open the diagonal h1-a8 for the dangerous white bishop) since the black king is in a sort of fortress. I did continue my study by playing 18...dxc5 (Stockfish plays here 18...Qxc5) 19.e5!
click for larger view
a natural and very strong move with a few threatens and baneful consequences. But now I did play 19...fxe5? which is immensely inferior than 19...Bc8. Anyways, no doubt that a complete study after the move 18.Bxc5!
click for larger view
is quite complex and extensive. |
|
| Aug-21-15 | | saturn2: Today I failed. My move was 18 Qa3 threatening Qxa7. I wasted some time calculating the defences 18... a6,b6 or Rb8-any. |
|
Aug-21-15
| | ajile: <Hans Kastorp: <ajile: 21.Ra3 mates in 5. 21.Qa3 only mates in 9.> <aporia: 21. ... a7-a5 won't help?> Whites threat is 22.Qxa7 with following Ra3#. 21. ... a5 doesn't help because of 22.Rb6.> 21.Ra3 a5 22.Qb5! and White will mate in 3 moves. |
|
Aug-21-15
| | M.Hassan: "Difficult"
White to play 18.?
18.Ra3
Trying to attack a7 square if Black does not support it
<18...e6 19.Rxa7+ Kxa7 20.Qa3#> 18...........a6
19.h4 e5 to provide room for Knight move
20.dxe6 Bc6 (not Bxe6)
21.Bf4 Ne7
22.Qd2 Rad8
23.Qe3
Hoping to win a pawn on the exchange
<24.Qxc5 dxc5 25.Bxc7> 23...........f5
24.e5 there is a chance to win a Rook for bishop
24..........Bxg2
25.exd6 Rxd6
26.Bxd6 Qxd6
27.Kxg2
After all the exchanges, white is equivalent of a piece (3points) up and it is time for me to check the actual game.
===
Nowhere near my line |
|
| Aug-21-15 | | Kasparov Fan: The position screams at you 18. Bxc5 got that in 10 maybe 15 seconds but Qa3 took more time and effort.All in all a good puzzle but I guess a little too easy for a Saturday. |
|
Aug-21-15
 | | patzer2: Like <sts> and <diagonally>, I went for 18. Bxc5! dxc5 19. d6? as my attempted solution to Friday's puzzle. Unfortunately, Deep Fritz 14's analysis proves 19. d6? to be a losing try. After 18. Bxc5! dxc5 19. d6? exd6 20. e5 Bc6!  (-3.49 @ 22 depth) Black snatches victory from the jaws of defeat. Instead of 19. d6?, the game move 19. e5! (+10.52 @ 22 depth) wins as it prepares the pawn push 20. d6 with a powerful discovered attack against the vulnerable b7 square. Black's not-so-obvious 17...Rb8?? was the decisive mistake. Instead, 17...b6 18. a4  maximizes Black's resistance. Earlier 9...Qb6 = (or the Fritz choice 9...Nf6 =) instead of 9...Bxc3?! to  should improve Black's chances. |
|
Aug-21-15
 | | whiteshark: Got it! After <19.e5 / 20.d6> the ♙b7 is pinned/immobile. |
|
|
|
|
< Earlier Kibitzing · PAGE 3 OF 3 ·
Later Kibitzing> |
Kibitzing
sac: 18.Bxc5