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David Janowski vs Oscar Chajes
Rice Memorial (1916), New York, NY USA, rd 1, Feb-06
Queen's Gambit Declined: Traditional Variation (D30)  ·  1-0



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Kibitzer's Corner
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Premium Chessgames Member
  ChessHigherCat: Back to queen sac Mondays
Aug-21-17  lost in space: I love Mondays!

26. Qh7+ Rxh7 27. Rxh7#

Aug-21-17  stst: Mondy Q-sac:
26.Qh7+ RxQ
Premium Chessgames Member
  agb2002: White has a knight and a pawn for the bishop pair.

Black threatens Bxd7 and Bxc1.

White can deliver mate with 26.Qh7+ Rxh7 27.Rxh7#.

Aug-21-17  AlicesKnight: Black's last move ...Rh8 does not defend against the mate, because after 26.Qh7+ Rxh7, 27.Rxh7 is mate as the N is covered. Taking the R on d7 looks necessary but White's threats leave no time to do this.
Aug-21-17  saturn2: Mate in 2 on h7.
17 Bh7 and 22 Ne4 are nice moves.
Aug-21-17  whiteshark: A ♔ on the rim is doom.


Aug-21-17  leRevenant: A truly Mondayish puzzle. Thank you CG.
Aug-21-17  patzer2: Solved today's Monday mate-in-two 26. Qh7+ Rxh7 27. Rxh7# at bullet speed.

Much more interesting is the game, especially the interesting demolition combination starting with 17. Bxh7!

Black's decisive mistake is the not-so-obvious 19...Kh7?, which gives White the win after the game move 20. Nd7 +- (+1.87 @ 31 depth, Stockfish 8) or the computer recommendation 20. Ng4 +- (+3.25 @ 31 depth, Stockfish 8.)

Ironically, the mistake (19...Kh7?) from this 1916 game was repeated again in a strong Master game in V Mikenas vs Kashdan, 1931, where a draw was agreed to by White in the position after <19...Kh7?> in this game.

What Black missed in both games is that instead of 19...Kh7? the correct move here is 19...Kh8 ⩲ to = (+0.51 @ 34 depth, Stockfish 8) with drawing chances for Black.

Earlier, instead of 15...Nxc5 16. Bxf6! ⩲ (+0.54 @ 30 depth, Stockfish 8,) Black can keep it fully level with 15...Qxc5 = (0.00 @ 35 depth, Stockfish 8.)

P.S.: Plan to catch the news reports about the solar eclipse on TV today. It's a big event as it's the first total eclipse to pass over the entirety of the USA in a hundred years. I don't have an approved solar filter or viewer to safely view the sun, so I have no intention of looking at the sun (or even the partially obstructed sun) directly.

An article at predicts thousands in North America could lose their vision while trying to view the sun without proper protection. So I plan to stay completely save and watch it on TV or view the shadow on the ground as the moon obstructs the sun in my viewing area.

Aug-21-17  morfishine: <26.Qh7+> 26...Rxh7 27.Rh7#


Aug-21-17  stacase: Didn't solve this at <Bullet Speed> I seem to have forgotten that Monday's are sacrificial days for her majesty.
Aug-21-17  The Kings Domain: Nice puzzle, impressive attacking game by Janowski.
Aug-21-17  zb2cr: Saw this one in a flash. It helps that it's a "typical Monday" Queen sacrifice. 26. Qh7+, Rxh7; 27. Rxh7#.
Aug-21-17  Sally Simpson: Hi Sargon,

"Game has been merged with a duplicate, but unsure which score is correct. Can anyone confirm?"

Not a duplicate the exact same position was reached one move earlier here...

click for larger view

in V Mikenas vs Kashdan, 1931

with White to play. White agreed to a draw missing the shot 19.Nd7 (which was move 20 in the Janowski game.)

See also:

Aug-21-17  Sally Simpson: Hi Patzer 2,

"Plan to catch the news reports about the solar eclipse on TV today. It's a big event as it's the first total eclipse to pass over the entirety of the USA in a hundred years."

I went to Italy one year to see a total eclipse of the sun.

It was just about to happen when suddenly it went all dark, like it was night-time and I did not see a thing.

Aug-21-17  patzer2: <Sally Simpson> The danger of eye damage would be if you're in the part of an area where there's only a partial eclipse of the sun (i.e. the majority of the continental US,) watching even a small part of the sun not hidden by the moon could cause eye damage.

For those within the 70-mile wide area of the total eclipse, the danger would be (1) watching all or part of the sun before the moon completely obstructs it or (2) looking at even a small crescent of the sun after the moon passes over and the sun starts to emerge.

To quote from my MSN/US News link from my previous post <Staring at the sun without eye protection is like burning the back of your retina, the back layer of your eyeball. And you wouldn't even know you're doing it because the retina has no pain fibers. People who stare at the sun without protection would get a blind spot in their vision right away though they wouldn't know until hours later or the next day that the blind spot was still there.

And it doesn't matter how much of the sun you're looking at either. Even a little crescent of sun during a partial eclipse is just as bright as a full sun in that area of your retina, says Van Gelder, clinical spokesperson for the American Academy of Ophthalmology. The only exception to this rule is if you're in the totality of the eclipse, which will be a 70-mile span of the moon's shadow as it progresses across the country between central Oregon and South Carolina.>

Aug-21-17  Cheapo by the Dozen: This was easy even for a Monday.
Premium Chessgames Member
  kevin86: Easy mate in two starting with a queen sac.
Aug-21-17  WorstPlayerEver: But 27. h5 is funnier.
Aug-21-17  Strelets: A queen sacrifice crowns a fitting reminder of how much of a force Dawid Janowski was in positions where he was allowed to create tactical complications. Lasker understood this and crushed him +7 -1 =2 in their 1909 match precisely by avoiding these positions.
Premium Chessgames Member <A truly Mondayish puzzle. Thank you CG.> You're welcome. It almost went in the "too easy" bin — but why worry when there are still 6 more days?
Aug-21-17  leRevenant: A week is a long time in politics (Harold Wilson) and in chess (leRevenant & CG).
Premium Chessgames Member
  Bubo bubo: 2# with 26.Qh7+ Rxh7 27.Rxh7#
Premium Chessgames Member
  plang: A very nice mating attack - Black's errors were fairly subtle.
May-22-23  Mathematicar: Brute force!
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