At the World Junior Championship, Stockholm 1969 (won by Karpov); Ulf Andersson (Sweden) faces Oscar Castro Rojas (Colombia).

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"Only a good bishop can be sacrificed, a bad bishop can only be lost."

🔸 Yuri Razuvaev

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Lev Polugaevsky v. Evgeny Sveshnikov, from the opening round of the 41st USSR Championship, Moscow, 2nd October 1973. In the background, Vladimir Tukmakov faces Aleksandr Beliavsky.

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🔘 41st USSR Championship, Moscow, 1973
🔘 PGN format

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🔸FIDE World Junior Championships U20 2018
🔸Round 7
⚪️Maghsoodloo,Parham (2649)
⚫️Sindarov,Javokhir (2484)
🔸1-0

21.Bc1!
In the closed Spanish game, Black has already sacrificed a piece for 3 pawns to expose the enemy king. Now Parham gradually increases his advantage with a few accurate moves.
21...Rb4 22.Ba3 Ra4 23.g3! Nc4 24.Bb3 Rxa3 25.Rxa3 Nxa3 26.Nxa3 Qc5 27.exd6 Bxd6 28.Nc4 Bc7 29.Kg2 +-

⚪️#5 (Strategy-White to Move)
🔸Vavulin,Maksim (2559)
🔸Batsuren,Dambasuren (2446)
🔸FIDE World Junior and Girls Under 20 Ch Gebze

13.Nxg5!
A typical sacrifice that destroys the castle position, but its consequences are not clear. In such situations, it is usually necessary to quickly mobilize the pieces to attack the king.
13. axb5?!
This move would cause an exchange of a pair of rooks which favors the defender.13...axb5 14. Rxa8 Bxa8 15. Nxg5 hxg5 16. Bxg5 exd4 17. Qf3 Kg7 18. Qg3 Nh5 19. Qg4 Nf6 20. Qg3 Nh5=
13.Bg3 achieves nothing because White probably will be unable to exploit the weaknesses on Black's kingside. 13...exd4 14. cxd4 Re8 15. d5 Na5 16.Bc2 c6 17. dxc6 Bxc6 with counterplay.
13... hxg5 14. Bxg5 exd4 15. Bd5 dxc3 16. Nxc3 b4 17. Ne2?!
With this retreat, White loses valuable time. In order to stop Black from consolidating, White should have played: 17. Bxc6 Bxc6 18. Nd5 Bxd5 19. exd5 Kg7 20. Qf3 Rh8 (20... Bd4 21. Re4 Nxe4 (21... Bxb2 22. Rb1 Bc3 23. Rg4+-) 22. Bxd8 Bxf2+ 23. Kh1 f5 24. Bg5 Bd4 25. Be3 +/-) 21.Rad1 Rh5 22. Qf4 Bxf2+ 23. Kxf2 Ng4+ 24. Qxg4 Qxg5 25. Qxg5+ Rxg5 26. h4 Rf5+ 27. Kg3+/=
17... Bxf2+ 18.Kh1
18.Kxf2 Ng4+ 19. Kg1 Qxg5-+
18... Bxe1 19.Qxe1 Qe7
19... Kg7 20. Nf4! Rh8 21. Qg3 Qg8 22.Rf1+-
20.Qh4 Nxd5
20... Kg7 21. Qh6+ Kg8 22. Qg6+ Kh8 23. Bxf6+ Qxf6 24. Qxf6+ +-
21. Bxe7 Ndxe7 22. Qf6 Kh7 23.Nf4?!
23.Rf1! The rook joins the action. 23...Ng6 24. Ng3 Nce7 25.Nf5 Nxf5 26. exf5
23... Rg8 24. Qh4+ Kg7 25. Rf1 Ng6 26. Qg5
26. Nxg6 fxg6 27. Qf6+ Kh7 28. Rf4 Rg7 29. Qe6 Re7 30. Rf7+ Rxf7 31. Qxf7+ Kh8 32. Qxc7+/-
26... Nce5 27. h4 Kf8?
27... Rh8! White's task is not easy.
28. Ne6+ Ke8 29. Nxc7+ Kd7 30. Nxa8 Bxa8 31. Rd1 Bxe4 32. h5 Ke6 33. Qe3 Bxg2+ 34. Kxg2 Nh4+ 35. Kf1 Nf5 36. Qb3+ Kf6 37. Qxb4 Ne3+ 38. Ke2 Nxd1 39. Qxd6+ Kf5 40. Qxd1 Rg2+ 41. Ke3 Ng4+ 42. Kd4 Kg5 43. b4 f5 44. Kc5 Rh2 45. Kb6 Rxh5 46. Kxa6 Rh6+ 47. Kb5 f4 48. Qd5+ Kh4 49. Qf3 Rh5+ 50. Kb6 Rf5 51. a5 Ne5 52. Qf2+ Kg5 53. a6 Rf6+ 54. Kb5 Nc6 55. Ka4 f3 56. b5 Rf4+ 57. Ka3 Nd4 58. b6 Nb5+ 59. Kb3 Kg4 60.b7 Rf8 61. Qc5 1-0

⚪️#5 (Endgame-White to Move)
🔸Martinez Alcantara,Jose Eduardo (2565)
🔸Agibileg,Uurtsaikh (2321)
🔸57th World Juniors 2018 Manavgat TUR 2018

65.Qd2 [65.Qxe4+ Kxe4 (65...Bxe4 66.Nf3 Bd5 67.b5 cxb5 68.Nd4+ Kf6 69.Nxb5+–) 66.Nf3 Kd3 (66...Ba2 67.Ne5 Bd5 68.Kg4+–) 67.f5 Kc3 68.Ng5 Kxb4 69.Ne6 Kc3 70.Kf4; 65.b5 Qxd3+ 66.Nxd3 cxb5 67.Nb4 Be4 68.c6 Ke6 69.Kg4 Kd6 70.f5 Bxc6 71.Nxc6 Kxc6 72.f6 Kd7 73.Kf5 Ke8 74.Kg6 Kf8=]

65...Qh1 66.Qc2+ Be4 67.Qf2? [67.Qe2+–]

67...Qh5 68.Ng2 Qg4+ 69.Kh2 Bxg2 70.Qxg2 Qxf4+ 71.Kg1 Qxb4 72.Qf3+ Ke5 73.Qxc6 Qe1+ 74.Kg2 Qe2+ 75.Kh3 Qe3+ 76.Kh4 Qf4+ 77.Kh3 Qe3+ 78.Kh4 Qf4+ 79.Kh5 Qf6

⚫️#6 (Strategy-Black to Move)
🔸Petrosyan,Manuel (2581)
🔸Haldorsen,Benjamin (2461)
🔸57th World Juniors 2018 Manavgat TUR 2018

Unity Chess Strategy Multiple Choice 6
public poll

B: h4 – 7
👍👍👍👍👍👍👍 70%
Hajjy, Kenneth, Nikhil, @Sophia_Peng, @AryanLeekha, Mahathi, @Passanger1500

A: Ng6 – 2
👍👍 20%
@RichardPeng, Srikar

C: g4 – 1
👍 10%
Alexander

👥 10 people voted so far.

⚫️#6 (Endgame-Black to Move)
🔸Milosevic,Milos (2292)
🔸Mohammad,Nubairshah Shaikh (2443)
🔸57th World Juniors 2018 Manavgat TUR 2018

Unity Chess Endgame Multiple Choice 6
public poll

A: b4 – 8
👍👍👍👍👍👍👍 67%
@PedramAtoufi, Nikhil, Esfandiar, @SophiaCat_does_Chess, @Ndia75, @A_Somewhat_Cool_Guy, @AryanLeekha, @Passanger1500

C: e5 – 3
👍👍👍 25%
Kenneth, @arsh_go, @chessnoob

B: Ra8 – 1
👍 8%
Mahathi

👥 12 people voted so far.

🅾️ Today is birthday of Tigran L. Petrosian!!
Armenian chess grandmaster

🌺 🌹🌷🌸💐☘️🌹 Happy birthday Dear Tigran 👏👏👏👏
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UNITY CHESS INFOGRAPHIC

✴️ Chess History - Tournaments
🔸 Berlin 1881

#chess_history_tornaments
#Berlin_1881
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✴️ Chess History - Tournaments
🔸 Berlin 1881
🔸 August 29 - September 17

🔰 Berlin 1881 (Germany)
CHAMPION: Joseph Henry Blackburne , 14/16 (+13 -1 =2)

▪️ The Berlin 1881 chess tournament organised by Hermann Zwanzig and Emil Schallopp, took place in Berlin from August 29 to September 17, 1881.
▪️ The brightest lights among the German participants were Louis Paulsen, his brother Wilfried Paulsen, and Johannes Minckwitz. Great Britain was represented by Joseph Henry Blackburne, the United States by James Mason, a master from Ireland. Mikhail Chigorin travelled from Russia, and two great masters from Poland: Szymon Winawer and Johannes Zukertort, also participated. Karl Pitschel, from the Austro-Hungarian Empire, arrived and played his games in the first three rounds, but was unable to complete the tournament.
▪️ The eighteen collected masters constituted a field of strength that had not been seen since the Baden-Baden 1870 chess tournament. The games were fiercely fought, as few draws were recorded, and a formula from this event would serve as a template for all future chess congresses in Germany before World War I.

🔹 The final standings and crosstable was as above👆
🔹 Download "Berlin 1881 Games Database" by PGN format👇

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#Berlin_1881
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