[Event "RA Fall Open"]
[Site "Ottawa (Canada)"]
[Date "2016.09.25"]
[Round "5"]
[White "Gordon, David"]
[Black "Valdizon, Armando"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "2311"]
[BlackElo "2171"]
[Annotator "Upper,John"]
[PlyCount "58"]
[EventDate "2016.??.??"]
1. d4 d5 2. Bf4 {The recently-trendy London system, which Carlsen used to to
beat Tomashevsky at TATA Steel in February, and Giri (for the first time in
his career) at the Bilbao Masters in July, and Ehsan Ghaem Maghami in the
Olympiad in September.} c5 3. e4 $5 {Transposing to an Albin Gambit reversed,
where White has the semi-useful extra move Bf4.} dxe4 4. d5 Nf6 5. Nc3 a6 6. a4
(6. Qe2 $1 e6 (6... g6 7. O-O-O Bg7 8. Nxe4 Nxe4 9. Qxe4 O-O 10. Qe3 Qa5 11.
Kb1 Bf5 $13 {1-0 (33) Berkes,F (2664)-Prohaszka,P (2582) Zalakaros 2015}) 7.
O-O-O exd5 8. Bg5 (8. Nxd5 $1 Nxd5 9. Qxe4+ Be6 10. c4 $16) 8... Be6 $15 9.
Nxe4 Nbd7 10. Bxf6 Nxf6 11. Ng5 Qb6 $15 {(0-1, 31) Dlugy,M (2518)-Bluebaum,M
(2588) Berlin (blitz), 2015.}) 6... g6 7. Bc4 (7. Qd2 Bg7 8. Bc4 O-O 9. Nge2
Nbd7 10. O-O Nb6 11. Ba2 Bd7 12. f3 $6 {White goes full-caveman.} (12. Ng3 Nxa4
$15) 12... exf3 13. Rxf3 Bg4 14. Rf2 Nc8 15. h3 Bxe2 16. Rxe2 Nd6 17. Rae1 Re8
18. Qd3 b5 $1 $15 19. Nd1 c4 20. Qa3 $2 Nf5 $19 21. Ne3 Nxe3 22. Bxe3 Nxd5 23.
Bc5 e6 {(0-1, 33) Bruno,F (2425)-Nabaty,T (2610) Forni di Sopra, 2016.}) 7...
Bg7 8. Nge2 Nbd7 $146 9. d6 e5 {The principled move, gaining time off the Bf4
and hoping to round up the Pd6, but not Black's only reasonable line.} (9...
Nb6 10. Ba2 Be6 {is the computer's suggestion.}) (9... O-O 10. dxe7 Qxe7 11.
Bd6 Qd8 12. Bxf8 Qxf8 $44 {with a pawn and the B-pair for the exchange.}) 10.
Bg5 h6 11. Nd5 $5 O-O (11... hxg5 12. Nc7+ Kf8 13. Nxa8 $14 {Black has the
B-pair and a pawn for the exchange, but the clogged position doesn't give the
Bs much scope.}) 12. h4 $5 {Diagram [#]Critical Position White has just played
h2-h4, a tactic nicknamed "the fishingpole" -- the Bg5 is the bait, the pawn
that takes on g5 is the hook, and the open h-file is line to reel in the
"fish". Or is it? Can Black take on g5? If not now, when?} Nb6 $1 (12... hxg5
13. Ne7+ $8 $18 Kh8 14. hxg5+ Nh7 (14... Nh5 15. Rxh5+ gxh5 16. Ng3 $18 {
and Black has to give back too much to prevent Qxh5 mating:}) 15. Ng3 $1 (15.
Kd2 $2 Ndf6 $8 16. Kc1 $1 $11) (15. Rxh7+ Kxh7 16. Kd2 Nf6 17. gxf6 Qxd6+) (15.
Qd5 $1 Nb6 16. Qxe4 Nxc4 17. Rxh7+) 15... Nb6 16. Rxh7+ Kxh7 17. Ke2 $8 $18
Bg4+ 18. f3 exf3+ 19. gxf3 Bh5 20. Qh1 $18) 13. Ne7+ (13. Nxf6+ {concedes
Black a comfortable plus, with no active chances for White:} Bxf6 14. Bxf6 Qxf6
15. Ba2 Be6 $15) (13. Nxb6 {also gives up the attack} Qxb6 14. Bxf6 Bxf6 15.
Nc3 (15. d7 $2 Qb4+ 16. c3 Qxc4 17. dxc8=Q Raxc8 $19) 15... Rd8 $15) 13... Kh7
$1 (13... Kh8 {is not losing, so long as Black doesn't take on g5 anytime soon:
} 14. Ba2 hxg5 $4 15. hxg5+ Nh7 (15... Nh5 16. Ng3 $18) 16. Ng3 $18 {with the
slow but deadly threats of Nxe4, Qf3-g3-h4, and also Ke2 (clearing the route
to the h-file) then Rxh7+.} a5 17. Ke2) 14. Ba2 Bg4 $1 $15 (14... hxg5 $4 15.
hxg5+ Nh5 16. Ng3 $18) 15. Qd2 $1 {There are no tricks with f2-f3, since the
Bg4 is defended and Black also has ...f2+; e.g.} (15. Bxf6 Bxf6 16. f3 $2 (16.
h5 Bxe7 17. dxe7 Qxe7 18. hxg6+ fxg6 $17) 16... exf3 17. Ng3 f2+ $19) 15...
hxg5 16. hxg5+ Nh5 $8 {Diagram [#]} 17. Ng3 $6 (17. Rh4 $1 Nc8 (17... e3 $1 18.
fxe3 Qd7 19. Ng3 $13) (17... Qd7 18. Ng3 $1 Nc8 (18... e3 19. Qxe3 Qxd6 20. f3
$40) 19. Nxe4 Nxe7 $1 20. dxe7 $14) 18. Rxg4 Nxd6 19. O-O-O $13) 17... Nc8 $1 {
Getting rid of the bone on d6 that's been choking him for so long.} 18. Nxh5 $4
(18. Nxe4 $1 Nxe7 19. dxe7 Qxe7 (19... Qxd2+ 20. Kxd2 Rfe8 21. f3 $14) 20. f3
$13 {and Black doesn't have time to save both the Bg4 and the Nh5.}) 18... gxh5
19. f3 Nxd6 $8 $19 (19... exf3 $4 20. Qd3+ Kh8 21. gxf3 $18) 20. fxg4 Qxe7 21.
O-O-O Rad8 $2 $17 (21... Rfd8 $1 {looks bad since it weakens f7, but it starts
an escape route for the K through f8.} 22. Rdf1 c4 $19) 22. Rxh5+ $1 (22. gxh5
$4 Nc4 {hitting the Qd2 and threatining ...Qxg5+, killing White's advanced
pawns.} 23. g6+ fxg6 24. hxg6+ Kxg6 $19) 22... Kg8 {Diagram [#]} 23. g6 $2 (23.
Rdh1 $1 Rfe8 $8 (23... c4 $2 24. g3 $8 {threatening Qh2}) (23... Nc4 $2 24. Qe1
$18 {threatening Qh4 and Bxc4.}) 24. g3 Qd7 25. Qh2 Kf8 $8 $19) 23... c4 $19
24. Rdh1 fxg6 25. Rh7 b5 $1 {shuts out the B, leaving Black with two extra
functioning pieces.} 26. axb5 axb5 27. Qd5+ Qf7 28. Qc5 Qf4+ $1 29. Kb1 Nb7 $18
(29... Qf1+ $142 $1 30. Rxf1 Rxf1#) 0-1