Soluciones ejercicios 3.5 a 3.8 del libro de Hertan

Ejercicio 3.5

Svidler, Peter -Timofeev, Artyom
RUS-ch 56th 2003

27. Bb5 Rd8 28. Nc6 {Now black must have learned to regret his 22nd move.} Qc5 (28... Qe4 29. Rfe1 Qg2 30. Re2 Qf3 31. Qc7 Be7 32. Nxd8 Bxb5 33. Nxe6 fxe6 34. Qb8+ Kf7 35. Qxb5) 29. Nxd8 Qxb5 (29... Bxb5 30. Nxe6 fxe6 31. Qb8+ Kd7 32. Rxf8 $18) 30. Qa8! Ke7 31. Nb7 Qb6 32. Nxd6 (32. Rxd6 Qc7 33. Rfd1 Bb5 34. Nxa5) 32... Qc6 33. Qxa5 1-0


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Ejercicio 3.6

Lahno, Kateryna - Jobava, Baadur
Dubai op 6th 2004

23... Nxc3!!{Now Black wins.} 24. Bc4 (24. Rxc3 Rd1+ 25. Kb2 Rb1#) (24. Nxc3 Qb4 25. Na4 Be6 $19) 24... Nxb5 25. Qe3 (25. Bxb5 Qb4) 25... Bd3! {White cannot protect against ...f5 with mate. A very nice game.} 0-1

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Ejercicio 3.7

Yu Shaoteng - Ni Hua
Yongchuan 2003


28... Nxc2! 29. Nxc2 Qc8 30. Rf3 (30. e5 dxe5 31. f5 gxf5 32. Rxf5 e4 33. Qxe4 Qxc3) 30... Bxc3 31. Kh1 (31. Qxc3 Rxc2+) 31... Bg7 32. Ne3 Qd7 33. Rg1 (33. Qxd6 Qxa4 34. e5 Bh6) 33... Qxa4 34. f5 (34. Nf5 Rfb8 (34... gxf5 35. Qc3 f6 36. Qxb2 Qxe4) 35. Nxd6 Qa2) 34... Be5 35. Rh3 Qa2 36. Nf1 (36. Rg2 $2 Rxg2 37. Nxg2 Qa1+) 36... Kg7 y las negras se impusieron jugadas después 0-1

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Ejercicio 3.8

Hertan - Macdonald
Amherst 1999

1. Qxh7+!! Kxh7 2. Rf7+ Bg7 3. Rgxg7+ Kh8 4. Rh7+! Qxh7 5. Bd4+ Qg7 6. Bxg7+ Kh7 7. Bd4+ Kh6 8. Be3+ Kh5 9. Rh7# 1-0. Secuencia toda obligada.