Mo Zhai vs Qi Guo (2016)

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Mo Zhai vs Qi Guo
Chinese Championship (Women) (2016), Xinghua CHN, rd 2, Apr-18
Queen's Gambit Declined: Orthodox Defense. Rubinstein Variation (D61) · 1-0

White to move.

ANALYSIS [x]

1-0

rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1

FEN COPIED

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sac: 19.Qh7+	PGN: download \| view \| print	Help: general \| java-troubleshooting

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Dec-27-17		Olsonist: This was easier than yesterday's. This was on autopilot.

Dec-27-17		al wazir: 16...Bxf2+ would have been interesting. The continuation might have been 17. Kxf2 fxe6 18. Bxe6+ Kh8 19. Bxd7 g5.

Dec-27-17		stst: Positions of the White R, Q & N are just right for an easy mate: 19.Qh7+ KxN (only save) 20.Qh8+ Ke7 (only escape) 21.Qd8# mate, supported by R & hiding from the Black B as blocked by its own monarch.

Dec-27-17		get Reti: This felt Monday level to me.

Dec-27-17		OhioChessFan: The hardest part was seeing from the beginning that Qd8 was mate. Ke7 sort of looks like the King is escaping. If not for the immediate mate, I think White loses.

Dec-27-17		lost in space: Mate after 19. Qh7+ Kxf8 20. Qh8+ Ke7 21. Qd8#

Dec-27-17		AlicesKnight: Is it me, or is it a run round the houses by the Queen? Qh7+ - h8+ - d8#? Let's see - oh yes it is.....(suitable Christmas reference here)

Dec-27-17		Walter Glattke: Better for White also were 19.g3 or 19.Ng6 Nxg6 20.Qxg6 Be6 21.Bxe6, but not good as 19.Qh7+.

Dec-27-17		Mayankk: Definitely easier than Tuesday. The only surprise is that Black willingly cleared the d file for White’s rook and then allowed the White knight to intrude till f8, in the hope that it had a deadly attack of its own. Ignorance is not always a bliss I guess.

Dec-27-17		agb2002: White has a rook for a bishop and a pawn. Black threatens Qxc4+. White wins in three moves: 19.Qh7+ Kxf8 20.Qh8+ Ke7 21.Qd8#. Christmas time.

Dec-27-17		leRevenant: What PB said.

Dec-27-17		malt: With the bishop threatened also 19.Qh7+ K:f8 20.Qh8+ Ke7 Qd8+

Dec-27-17		morfishine: <19.Qh7+> 20.Qh8+ 21.Qd8# *****

Dec-27-17		saturn2: mate in 3 ending with Qd8++

Dec-27-17		Once: That's a cute puzzle. The black Bh4 is holding on to the d8 square, preventing black from invading with Rd8. So white forces black to block the bishop's protection of d8 with 19. Qh7 Kxf8 20. Qh8+ Ke7 click for larger view Now the d8 square isn't protected. White continues his queen tour with 21. Qd8# click for larger view

Dec-27-17		Cheapo by the Dozen: I found this harder than some other people did. I assumed d8 was covered by the bishop, and only found the solution by deciding to reexamine any forcing line and see where it took me.

Dec-27-17		patzer2: My 8-year-old Grandson was visiting for the holidays, and while I was pondering today's Wednesday puzzle position he came into the room where the computer was located, took one look at the screen and immediately found the mate-in-three 19. Qh7+ 20. Qh8+ 21. Qd8#. Black's game starts to go bad with 16...Ne5? which practically forces White into a winning position after the expected 17. Nxf8 Qxe3+ 18. Kf1 +- (+1.72 @ 28 ply, Stockfish 8). Black's game goes from bad to worse with 18...Qxf4? when White has only one good move left, as all other moves lose. Unfortunately for Black, White's good move is today's mate-in-three puzzle solution 19. Qh7+ 20. Qh8+ 21. Qd8#. Instead of 18...Qxf4?, Black could have avoided immediate mate with 18...Bf5 when White must find 19. Bd3! Qxf5 20. Bxf5 +- (+1.57 @ 30 ply, Stockfish 8) to maintain a strong advantage. Instead of the speculative 16...Ne5?, Black could have held an unbalanced but roughly level position with 16...Qxb4+ 17. Ke2 (17. Rd2 Bxf2+! 18. Kxf2 fxe6 19. Rb1 Qe7 =) 17...Ne5 18. Nxf8 Qxc4+ 19. Qxc4 Nxc4 20. g3 Be7 21. Nd7 a5 22. Rd5 b5 = (0.06 @ 33 ply, Stockfish 8).

Dec-27-17		TheaN: Wednesday 27 December 2017 <19.?> <19.Qh7+ Kxf8 20.Qh8+ Ke7 21.Qd8#>? Feels off for a wednesday, even though the mate itself isn't that easy to see. I guess the difficulty is to narrow down that the escape is not an actual escape: otherwise white had to look for a way to block e7, which was impossible at hand. Black missed the mate, and therefore chose this continuation.

Dec-27-17		Marmot PFL: <My 8-year-old Grandson was visiting for the holidays, and while I was pondering today's Wednesday puzzle position he came into the room where the computer was located, took one look at the screen and immediately found the mate-in-three 19. Qh7+ 20. Qh8+ 21. Qd8#.> Impressive, if true.

Dec-27-17		dfcx: <Walter Glattke: Better for White also were 19.g3 or 19.Ng6 Nxg6 20.Qxg6 Be6 21.Bxe6, but not good as 19.Qh7+.> After 19.g3 or 19.Ng6, 19...Qxc4+ and black is suddenly alive.

Dec-27-17		BOSTER: <My grandson>.It is nice to know. But what about you? I did not see move Qh7+, and'd play Ng6.

Dec-27-17		BOSTER: Now I understand how Kramnik overlooked mate in one playing vs Deep Fritz when white knight was on f8.

Dec-27-17		Bubo bubo: Mate-in-three: 19.Qh7+ Kxf8 20.Qh8+ Ke7 21.Qd8#

Dec-27-17		patzer2: <Marmot PFL> My Grandson is a USCF top 100 8-year-old player, who regularly solves the Monday through Wednesday puzzles.

Dec-27-17		patzer2: <Boster> I looked at 19. Qh7+ but after 19...Kxf8, I stopped searching. My Grandson had no problem looking two moves deeper for mate.

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