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On February 15, 2017, the Toronto Dragons played the Pagonia Penguins. The teams were evenly matched, with 2 GMs, 1 IM and 1 FM each. Toronto won, 9.5 - 6.5.

This week's Canadian Tactic comes from the round 6 PRO Chess League game between Toronto Dragons' FM Shiyam Thavandiran and the Patgonia Penguins' GM Fernando Peralta. Their game was interesting right out of the opening: a Caro-Kann that reached a new position after 5 moves, followed by a complex middlegame where Black played inventively to grab the initiative and the full point.

Black has just played ...Nd4. What should White do? (very complex).

Hint: this one is complicated. Please, consider the following:

Spoiler: Highlight to view

(listed here in alpha-numerical order)

19.c4
19.cxd4
19.Nd2
19.Nxd4
19.Rh3

() - ()
 
 Round:  Result:
[Event "PRO Chess League"][Site "Chess.com"][Date "2017.02.15"][Round "6.1"][White "Thavandiran, Shiyam"][Black "Peralta, Fernando"][Result "0-1"][ECO "B12"][WhiteElo "2516"][BlackElo "2616"][Annotator "John Upper"][PlyCount "72"][EventDate "2017.01.11"][EventType "schev (rapid)"][EventRounds "7"][WhiteTeam "Toronto Dragons"][BlackTeam "Patagonia Penguins"]1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 a6 $5 {Rare, but it's been playedsuccessfully a couple of times by Vitiugov.} 5. c3 (5. Be3 h5 6. Bd3 Bxd3 7.Qxd3 e6 8. Nd2 Ne7 9. Ne2 c5 10. c4 Nbc6 11. O-O cxd4 12. Nxd4 Nxe5 13. Qb3dxc4 14. Nxc4 (14. Qxb7 Qd5 $1 $15) 14... Nxc4 15. Qxc4 Rc8 16. Qe2 Nd5 $15 {0-1 (40) Sutovsky,E (2647)-Vitiugov,N (2721) Tallinn (rapid), 2016.}) 5... Qc7{Move 5 and we're in uncharted territory: no games in the MegaBase from here.}6. g4 Bd7 7. h5 {Stopping ...h5.} (7. Be2 h5 $5) 7... c5 8. Be3 Nc6 9. Nd2 Nh610. Be2 f6 $1 {Black's position looks weird, but if he'd played ...e6 it wouldbe an advance French, where White's kingside expansion would look outrageouslyambitious.} 11. f4 fxe5 (11... Qb6 12. Nb3 (12. Qb3 Qxb3 13. Nxb3 c4 14. Nc5Bxg4 $15) 12... cxd4 13. cxd4 $13) 12. dxe5 ({It's easy to imagine a weakerplayer as White continuing} 12. fxe5 e6 13. Bxh6 {"trading the bad B andwrecking Black's kingside"} gxh6 14. Ngf3 O-O-O $15 {only to discover thatBlack is better! Despite the sensible trades by White, Black's B-pair,possible play against the White K if White castles long, and lack of squaresfor the white Ns leave Black better. One possible continuation, not forced, is:} 15. Qc2 Kb8 16. O-O-O cxd4 $1 17. cxd4 Qa5 18. Kb1 Nb4 19. Qb3 Ba4 20. Qa3Bc2+ $19) 12... e6 13. Nb3 b6 14. Qd2 d4 $5 {Black boldly stirs upcomplications.} (14... a5 15. a4 (15. O-O-O $6 a4 16. Na1 a3 17. b3 d4 $1 $17)15... Be7 {or ...000.}) 15. Bf2 dxc3 16. bxc3 Be7 17. O-O-O a5 18. Qe3 $6 (18.Qc2 {Was better.} {avoiding Black's tactics.}) 18... Nd4 $5 {[#]} 19. Nd2 ({Obviouslynot:} 19. cxd4 $4 cxd4+ $19 {capturing with check and winning the Qe3.}) (19.Rh3 {shows one Black threat:} Nxb3+ 20. axb3 a4 {with strong play against thewhite K.}) (19. c4 Bc6 20. Rh2 Nxe2+ 21. Qxe2 O-O $1 {it might look mad tocastle when the white pawns are so far advanced, but there are no hooks, soWhite has no way to open lines; e.g.} 22. g5 Nf5 $17 {and if White pusheseither g or h-pawn Black will push past to keep both kingside files closed. Onthe other side of the board Black has hooks to open lines, and can continuewith ....Qb7, ...a4 and a well-timed ...b5}) (19. Nxd4 $1 cxd4 20. Qxd4 $5 (20.Rxd4 {is playable, and probably best} Bc5 21. Qd3 Bxd4 22. Bxd4) 20... Bc5 {skewering the Bf2} (20... Bc6 21. Rh3 $1 $13 (21. Bf3 $4 Rd8 $1 22. Qe3 Ba3+$19 {wins a R.})) (20... Rc8 $5 21. Nh3 $1 {Defends the Bf2, but also forcesthe Be7 to stay there to defend g5. If} Bc5 $2 {White has a fantastic exchangesac:} (21... Qxc3+ $14) 22. Qxd7+ $3 Qxd7 23. Rxd7 Kxd7 24. Rd1+ $18 Kc7 (24...Ke7 25. Bh4+ $18) 25. Bxc5 bxc5 26. Ng5 Rhe8 27. Rd6 $18) 21. Qe4 $5 {attacking the Ra8} (21. Qc4 {is safest.} Ba3+ 22. Kb1 Qxc4 23. Bxc4 Nxg4 24.Bd4 $13) 21... Bc6 {defending the Ra8 and skewering the Rh1; Black would bewinning here, except for} 22. Bb5 $1 Ba3+ {Only move.} (22... Rc8 $2 23. Qxc6+ Qxc6 24.Bxc6+ Rxc6 25. Bxc5 Rxc5 {Black will get a pawn back, but White's developmentgives him a plus; e.g.} 26. Rd6 $14) 23. Kb1 {Only move.} (23. Kc2 $2 Bxb5 {Only move.} 24. Qxa8+Kf7 25. Qxh8 Qc4 {Only move.} $19 {and White is getting mated.}) 23... Bxb5 $3 24. Qxa8+Kf7 25. Qe4 {Only move.} (25. Qxh8 $2 Qxc3 26. Bd4 Bd3+ {Only move.}) 25... Bc6 26. Qc4 b5 27. Qb3Bxh1 28. Qxa3 $15 Be4+ 29. Ka1 {Only move.} $15 (29. Kb2 $4 b4 $19)) 19... O-O 20. Bg3Qc6 21. Rh2 $6 (21. Ne4 Nxe2+ 22. Qxe2 Qa4 {is similar to the game.}) 21...Nxe2+ 22. Qxe2 Qa4 $19 23. Kb1 (23. c4 Qa3+ $19 {wins the Bg3.}) 23... Bb5 24.c4 (24. Qf3 Rad8 25. Nb3 Bc6 26. Qe2 Rxd1+ 27. Qxd1 c4 $19) 24... Qb4+ 25. Ka1Qc3+ 26. Kb1 Ba4 {White is hanging on d1 and g3.} 27. Ne4 Qb4+ 28. Ka1 Bxd1 29.Qxd1 Qxc4 30. Qc2 Qf1+ 31. Kb2 Qxg1 {Black is up a R, but I suppose noonewants to resign in a team match.} 32. Rd2 Rad8 33. Rxd8 Rxd8 34. Bf2 Qxg4 35.Qc4 Kh8 36. f5 exf5 0-1
merida
46

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