Your judgement, please - Pt. 88

Retirado do site Chessbase.com.

Death rides a horse
25.07.2010 – This was the favourite example of yours truly in the tactics section of CBM 131 and also one of the first multiple choice questions. How would you assess the situation after 33...Nc4?
A) White has a beautiful strike, deciding the game in his favour.
B) Black has sufficient resources to fend off the attack, he wins.
C) With best play the game will end in a draw.

The solution is here, but first ponder over it with a larger version of the diagram.

Death rides a horse
This was the favourite example of yours truly in the tactics section of CBM 131 and also one of the first multiple choice questions. How would you assess the situation after 33...Nc4?

A) White has a beautiful strike, deciding the game in his favour.
B) Black has sufficient resources to fend off the attack, he wins.
C) With best play the game will end in a draw.

Solution

Your judgement, please - Pt. 87

Retirado do site Chessbase.com.

Of bishops and giant pawns
28.07.2010 – In endgames with bishops of opposite colours it is well known that the likelihood of a draw is particularly high. But when the bishop resembles a giant pawn, as in our present example, problems are of course also on the cards in this type of endgame.
What sequence of moves did Black (to move) use to bring about a winning position here?

Analysis by GM Karsten Müller on ChessBase Magazine Online.

Middelveld-Peng, Netherlands 2009

In endgames with bishops of opposite colours it is well known that the likelihood of a draw is particularly high. But when the bishop resembles a giant pawn, as in our present example, problems are of course also on the cards in this type of endgame. What sequence of moves did Black (to move) use to bring about a winning position here?

Analysis Middelveld-Peng by GM Karsten Müller.

Your judgement, please - Pt. 86

Retirado do site Chessbase.com.

Automatic recapturing...
02.08.2010 – ... is a reflex which often is hard to resist. Here White following 24...bxc3 surprisingly played 25.Rh7 in order to target the point f7 after 25...cxb2 with 25.Qh5 How would you judge this continuation?
A) White gets a decisive attack;
B) nice idea, but only enough for a draw;
C) Black can successfully parry the threats with a return sacrifice and get a new queen afterwards.
The solution is here, but first ponder over it with a larger version of the diagram.

Automatic recapturing is a reflex which often is hard to resist. Here White following 24...bxc3 surprisingly played 25.Rh7 in order to target the point f7 after 25...cxb2 with 25.Qh5 How would you judge this continuation?

A) White gets a decisive attack;
B) nice idea, but only enough for a draw;
C) Black can successfully parry the threats with a return sacrifice and get a new queen afterwards.

Solution

Calendário de eventos enxadrísticos - Agosto 2010

Retirado do site ClubedeXadrez.com.br.

Atualizado em 02/08 às 22h55 - Boa noite, Arthur Santa Cruz, vencedor do Regional de Macaé na tarde deste domingo! - Pan-Americano da Juventude começou na gaúcha Bento Gonçalves - encerrados há pouco o Regional Bahia/Sergipe e o Regional de Macaé - o jornal "O Estado de São Paulo", está sob censura há inefáveis 336 dias, acompanhado do "Diário do Grande ABC", de Santo André (SP), "Diário da Região" de São José do Rio Preto(SP) e de mais de uma centena de veículos de comunicação pelo Brasil - ótimo final de domingo a todos, iniciando um excelente mês de agosto!

30 a 8/8: IRT Mogiano (fechado) - Ribeirão Preto - SP - em andamento

30 a 1/8: Zonal Bahia/Sergipe - 4 vagas (sim, quatro) na Semifinal do Campeonato Brasileiro Absoluto, com ajuda de custo de R$800,00 a cada classificado - Salvador - encerrado

31 a 1: Regional Fluminense de Macaé - classificatório para o Campeonato Carioca ou Estadual do Interior, conforme a filiação - premiação: R$800,00 ($350,00 ao campeão) - encerrado, 28 jogadores e a vitória de Arthur Santa Cruz, com 5 em 6

31: Etapa Seara Barreiro do Grand Prix de Rápidas da Federação Mineira - categorias A e B conforme o rating - premiação total: R$600,00 ($150,00 aos melhores de cada categoria) - Belo Horizonte - - encerrada - categoria A: 5 jogadores e a vitória de Frederico Gazel Pereira com total aproveitamento no Schürig; categoria B: 23 jogadores e a vitória de Haruna Hama, com 6 em 6

31: Torneio MMM Taça de Ouro - inscrições gratuitas - Praia de Itaparica - município? - ES

31 a ? Torneio dos Campeões Iguaçuanos - fechado, 16 jogadores - Nova Iguaçu - RJ - em andamento

1: Aberto do Sesc Taguatinga - DF - encerrado

1 a 8: Festival Pan-Americano da Juventude - Bento Gonçalves - RS - em andamento

6 a 8: Zonal Pernambucano - para jogadores com rating Fide até 2100 - Petrolina

6 a 8: 2º Campeonato Paraibano Absoluto Aberto - João Pessoa

7 e 8: 4ª etapa do Circuito Estadual Absoluto/Ceax - Vitória

7: 2ª etapa do Circuito Convergência 21 - AABB - Premiação: R$400,00 ($250,00 ao campeão) - Rio de Janeiro

7: Torneio Aniversário da Fexerj - premiação: R$800,00 ($300,00 ao campeão) - Rio de Janeiro

7: Torneio Sesc São Caetano - iscrições gratuitas pelo e-mail xadrez@scaetano.sescsp.org.br ou pelo telefone 4223-8800, Central de Atendimento, até 05/08

7: Torneio Escolar do Festival Santista denominado "Caça-Talentos" - 2º ano ao Ensino Médio

8: Memorial Flávio de Carvalho - etapa do Circuito Paulista Dinâmico - premiação: R$500,00 - inscrições: R$25,00 - São Paulo

8: 3º Torneio Aberto do Sindicato dos Bancários de Uberaba e Região - Uberaba - MG

9 a 22: 9º IRT Memorial Mário Covas - fechado, 10 jogadores - Santos - SP

9 a 22: 7º IRT Memorial Regina Helena Marques Prol - fechado, 10 jogadores - Santos - SP

12 a 15: Etapa do Aberto do Brasil Cidade de Manaus - vaga na Semifinal do Campeonato Brasileiro - premiação: R$5.000,00 ($1.000,00 ao campeão)

14 a 29: 290º IRT da Liga Campineira Cidade de Itu - fechado, 14 jogadores - SP

14 a 16: IRT Taça Cidade de Teresina - Premiação: R$1.600,00 ($800,00 ao campeão)

14 e 15: Regional Norte Escolar - Ananindeua - PA

15: Aberto de Botucatu - etapa do Circuito Paulista Dinâmico - premiação: R$1.000,00 ($250,00 ao campeão)

15: 61º Memorial Júlio Guerra/etapa do Circuito Solidário GXBG/Casa Amarela de Santo Amaro - São Paulo - inscrições mediante a doação de 1 kg de alimento não-perecível em prol da Casa do Menor de Santo Amaro - São Paulo

17 a 1/9: Final do 50º Campeonato Brasiliense Absoluto - IRT fechado, 14 jogadores, duas vagas na Semifinal do Campeonato Brasileiro Absoluto - premiação: R$3.500,00 ($800,00 ao campeão)

19 a 22: IRT Campeonato Paulista Absoluto - Santos

21 e 22: 6º Campeonato Amador da Liga de Xadrez - para jogadores com rating Fide até 2000

20 a 29: IRT Aberto Internacional de Araruama - PREMIAÇÃO: R$10.000,00 ($2.500,00 ao campeão) - RJ

28: Torneio Sesc São Caetano - iscrições gratuitas pelo e-mail xadrez@scaetano.sescsp.org.br ou pelo telefone 4223-8800, Central de Atendimento, até 26/08

28 e 29: IRT Zonal Paulista/Memorial Anestor de Souza - Itapetininga

29: etapa de agosto do Circuito Grand Prix do Sesc Interlagos - inscrições gratuitas - São Paulo

Your judgement, please - Pt. 85

Retirado do site Chessbase.com.

Letales jugadas intermedias
En el final de torre de la partida Wang Yue - Nisipeanu, disputada en el reciente torneo Regilor jugado entre Medias y Bazna, en Rumanía, puede que las negras tengan un peón de menos, pero sus piezas sencillamente bullen de actividad y están bien coordinadas. El peón pasado en el flanco de dama está eficazmente apoyado por el rey y la torre mantiene en la primera fila al monarca blanco, aislado del resto de la batalla. En la posición del diagrama, les toca jugar a las negras. ¿Se le ocurre una ejemplar variante ganadora? ¿Debería comenzar con 56...b4 o con 56...Rc3? Compare sus análisis con los comentarios que ofrece Karsten Müller en ChessBase Magazine Online.

Wang Yue-Nisipeanu, Medias/Bazna 2010

En el final de torre de la partida Wang Yue - Nisipeanu, puede que las negras tengan un peón de menos, pero sus piezas sencillamente bullen de actividad y están bien coordinadas. El peón pasado en el flanco de dama está eficazmente apoyado por el rey y la torre mantiene en la primera fila al monarca blanco, aislado del resto de la batalla. En la posición del diagrama, les toca jugar a las negras. ¿Puede idear una ejemplar variante ganadora? ¿debería comenzar con 56...b4 o con 56...Rc3? Compare sus análisis con los comentarios que ofrece Karsten Müller en ChessBase Magazine Online.

Análisis Wang Yue-Nisipeanu por el GM Karsten Müller.

Enlaces:

• Todos los problemas de ajedrez de 2010...

Your judgement, please - Pt. 84

Retirado do site Chessbase.com.

Aguanta tus caballos...
... antes de capturar los del enemigo. Parece que eso fue lo que pensaron las blancas cuando jugaron 34.Cb4-c2, con lo que controlan la casilla a1 y amenazan después con capturar al caballo clavado Cb6. ¿Cómo queda ahora la posición de las negras?
A) Es ganadora;
B) perdedora
C) ligeramente peor.
Tiene la solución aquí, pero antes de mirarla le sugerimos que reflexione sobre el problema

Aguanta tus caballos antes de capturar los del enemigo. Parece que eso fue lo que pensaron las blancas cuando jugaron 34.Cb4-c2, con lo que controlan la casilla a1 y amenazan después con capturar al caballo clavado Cb6. ¿Cómo queda ahora la posición de las negras?
A) Es ganadora;
B) perdedora
C) ligeramente peor.

Solución

Enlaces:

• Todos los problemas de ajedrez de 2010...

Your judgement, please - Pt. 83

Retirado do site Chessbase.com.

Combinar ataque con defensa
Esa receta suele ser una buena idea y eso debieron pensar las blancas cuando jugaron 37.Te1-e3, cubriendo la amenaza sobre f2 a la vez que situaban la torre en posición en la tercera fila, originando la posición del diagrama. ¿Cómo cabe valorar la posición ahora?
A) Las blancas ganan: su rey está a salvo y no hay nada contra las amenazas 38.d6 y Dh8+;
B) las negras pueden lanzar un contragolpe inmediato;
C) las negras logran ventaja combinando también ataque y defensa.
Tiene la solución aquí, pero antes de mirarla le sugerimos que reflexione sobre el problema

¿Cómo cabe valorar la posición tras 37.Te1-e3 ahora?
A) Las blancas ganan: su rey está a salvo y no hay nada contra las amenazas 38.d6 y Dh8+;
B) las negras pueden lanzar un contragolpe inmediato;
C) las negras logran ventaja combinando también ataque y defensa.

Solución

Enlaces:

• Todos los problemas de ajedrez de 2010...

Your judgement, please - Pt. 82

Retirado do site Chessbase.com.

To exchange or not to exchange?
09.07.2010 – In endgames, a further reduction in material is always a critical decision. In our position, Black was offered with 60...Kxg2 61.Kxe3 Rxb5 62.axb5 f1Q 63.Rxf1 Kxf1 the option of a liquidation to a pawn ending, which would leave him with a protected passed pawn on a5.

What do you think? Should he choose that liquidation or should he rather go for 60...Rc3 and the ending with rooks and bishops of opposite colours?
Analysis by GM Karsten Müller on ChessBase Magazine Online.

Lalith-Piasetski, Hilversum 2010

In endgames, a further reduction in material is always a critical decision. In our position, Black was offered with 60...Kxg2 61.Kxe3 Rxb5 62.axb5 f1Q 63.Rxf1 Kxf1 the option of a liquidation to a pawn ending, which would leave him with a protected passed pawn on a5.
What do you think? Should he choose that liquidation or should he rather go for 60...Rc3 and the ending with rooks and bishops of opposite colours?

Analysis Lalith-Piasetski by GM Karsten Müller.

Your judgement, please - Pt. 81

Retirado do site Chessbase.com.

With a knight on f5...
05.07.2010 – ... the game often wins itself, as you can read in many text books on the attack. Just optically this piece always looks menacing, and here even a colleague is at the ready on g3. How do you judge the situation?
A) Black has too many pieces on the kingside, there can't be anything for White;
B) the first player gets a crushing attack, however, a clever preparation move is needed first;
C) she can strike right away.
The solution is here, but first ponder over it with a larger version of the diagram.

'With a knight on f5 the game often wins itself', is said in many text books on attack. Just optically this piece always looks menacing, and here even a colleague is at the ready on g3. How do you judge the situation?

A) Black has too many pieces on the kingside, there can't be anything for White;
B) the first player gets a crushing attack, however, a clever preparation move is needed first;
C) she can strike right away.

Solution

Your judgement, please - Pt. 80

Retirado do site Chessbase.com.

The struggle against the blockading pieces
18.06.2010 – 154 moves had already been played in the game Aronian-Dominguez, when Aronian carried out a brilliant idea in the form of 155.Qb6+!. The intention is, after the forced exchange of the blockading queen with 155...Qxb6 156.Bxb6 and the bishop sacrifice Kxb6, to support the advance of the white passed pawn duo with 157.Kh5. So far, so good.
But what does White play if Black does not take the bishop but sets up a new blockader in front of the passed pawns with 156...Bg6? GM Karsten Müller has analysed the ending for ChessBase Magazine Online.

Aronian-Dominguez, Leon 2010

In this position Aronian played 155.Qb6+! Qxb6 156.Bxb6, in order, after Kxb6, to support the advance of the white passed pawns with 157.Kh5.



But what had Aronian planned if Black had refused the bishop sacrificed and brought in a new blockader for the white pawns by 156...Bg6?

Analysis Aronian-Dominguez by GM Karsten Müller.