domingo, 26 de julho de 2015

DAMAS para crianças e adolescentes 51


O Jogo de Damas é esporte*
 * Resolução nº 18/88 do CND. Ver APÊNDICE V, na 18ª postagem, de NOV.12



Meninas
         Sejam bem-vindas ao nosso ESPORTE.
         Ah, vocês não fazem idéia do que estão perdendo...
         E ficarão encantadas com a beleza de certas partidas.
         Lindas partidas: de um Sidney Marra, de um Valdemar
Bakumenko, de um Antonio Fabelo Chaves, de um Lourival Mendes França.
         E vocês também poderão fazer bonito no tabuleiro!


PARTE 2


PARTE 1 Sumário (ver postagem de DEZ.2013)


PARTIDAS
PARTIDA 44
Partida comentada*
       Disputada em São Lourenço, em 22 de dezembro, válida pela Taça São Lourenço X Guanabara.
         Brancas: Verson Guimarães ─ Minas Gerais
         Pretas: José Rosendo ─ Guanabara

                                               1. c3-b4                        f6-g5
                                               2. b2-c3                        g5-h4
                                               3. b4-a5                        g7-f6
                                               4. c3-d4                        b6-c5
                                               5. d4xb6                       a7xc5
         (Essa manobra levará futuramente as pretas para o jogo lateral, seria bem melhor d6-e5 ou f6-e5 com jogo centralizado e com luta igual.)
                                               6. a1-b2                       h8-g7
                                               7. g3-f4                        f6-g5
         (Se f6-e5;  8. b2-c3 e3xg5   9. h2xf4 g7-f6 e pretas teriam uma posição segura e muito ativa. Porém, o lance do texto conduz para jogo mais complicado e com vasto campo de ciladas e jogos posicionais engenhosos.)
                                               8. b2-c3                       c5-b4
                                               9. a3xc5                      d6xb4
                                             10. c3-d4                       b4-a3
                                             11. d2-c3                       g7-f6
         (Ambos os lances foram corretos e maliciosos, se: 11. ... e7-d6?   12. d4-e5! e brancas esmagariam as pretas  mesmo com a resposta de d8-e7   13. e3-d4 g5xc5   14. e1-d2 d6xf4   15. c1-b2 a3xe3   16. f2x toma cinco peças até h8 e faz dama com ganho.) 
                                                          12. f4-e5                         e7-d6
                                             13. e5xg7                       g5-f4
                                             14. e3xg5                       h4xh8
                                             15. f2-e3                         h8-g7
                                             16. h2-g3                        g7-f6
                                             17. c1-d2                        f8-e7
                                             18. g3-f4?                      ...
         (Este lance é fraco, correto teria sido g3-h4.)
                                             18. ...                              b8-a7
                                             19. g1-f2                         f6-e5!
                                             20. d4xf6                        e7xg5
                                             21. f2-g3                         g5-h4
                                             22. e3-d4                        h4xf2
                                             23. e1xg3                       d8-e7
                                             24. d2-e3                        a7-b6
                                             25. d4-e5                        h6-g5
                                             26. f4xh6                        d6xb4
                                             27. a5xc3                       e7-f6
                                             28. g3-f4                         c7-d6
                                             29. f4-g5                         f6xh4
                                             30. h6-g7                        b6-c5
                                             31. g7-h8  (D)                 h4-g3
                                             32. h8-f6                         g3-f2
                                             33. c3-b4                        f2-e1  (D)
                                             34. b4-a5
         As brancas abandonaram, pois de fato não havia mais salvação, pois a colocação da dama preta em b8 daria fácil vitória.
José Rosendo conduziu muito bem a partida e mereceu a vitória, pois foi o mais técnico e foi o damista que apresentou mais teoria e jogo posicional nessa contenda.


_____________________________

* Da coluna “Damas”, de Antonio Fabelo Chaves. “O Jornal” (extinto), de 15.06.69.

Meio-de-jogo
MEIO-DE-JOGO 5 (I)
Jogam as brancas e ganham

                                                1. f4-g5                        h6xf4
                                                2. g3xc3                      b8-c7
        Se 2. ... a7-b6   3. c3-b4 c5-d4   4. b4-c5 d4-e3   5. c5xa7 g7-f6   6. e1-d2 e3-f2   7. d2-e3 f2xd4   8. c1-d2 f6-e5   9. h2-g3 h8-g7   10. g3-f4 e5xg3   11. h4xf2 g7-f6   12. d2-e3 f6-e5   13. e3xc5 e5-f4   14. c5-d6 X.
         Se 2. ... g7-f6, ver Variante 1. (Postagem 52, de SET).
         Se 2. ... g7-h6, ver Variante 2. (Postagem 53, de OUT).
                                                             3. c1-d2                       g7-f6
         Se 3. ... g7-h6   4. d2-e3 como no lance 4 da Variante 2, da citada postagem 53.

                                               4. d2-e3                       f6-e5
         Se 4. ... h8-g7, ver Variante 3. (Postagem 54, de NOV).
                                               5. e1-f2                        f8-e7
                                               6. f2-g3                        c7-d6
         Se 6. ... e7-d6, ver Variante 4. (Postagem 55, de DEZ).
                                               7. g3-f4                        e5xg3
                                               8. h2xf4                       e7-f6
                                               9. c3-d4                       a7-b6
         Se 9. ... h8-g7   10. d4xb6 a7xc5   11. b2-c3 g7-h6  (se 11. ... f6-e5   12. e3-d4 c5xg5   13. h4xh8 X)  12. c3-d4 X.
                                             10. b2-c3                       b6-a5
         Se 10. ... h8-g7   11. f4-g5 g7-h6  (se 11. ... b6-a5   12. d4xb6 a5xc7   13. g5xc5 X)   12. g5xe7 d6xf8   13. c3-b4 X.
                                             11. d4xb6                      a5xc7
                                             12. f4-g5                        f6-e5
                                             13. e3-d4                       X.
(CONTINUA)

DESAFIO

Problemas

Recém-publicados na outra seção do blog ─ PROBLEMAS E ESTUDOS

Solução da postagem anterior

PROBLEMA 87

                                                             1. g3-h4                       e5xg3
         Se 1. ... h6xe3, ver Variante 1.
                                               2. h4xc5                      d6xb4
                                               3. a3xf8                       X.

                                               VARIANTE 1

                                               1. ...                              h6xe3
                                               2. c1xd8                      d4-c3
         Se 2. ... d4-e3   3. a3xf8 X.
         Se 2. ... d6-f8   3. h4-f6 e5xg7   4. d8-e7 f8xd6   5. a3xh6 X.
         Se 2. ... d6-b8   3. d8-c7 b8xd6   4. a3xf8 d4-c3  (se 4. ... d4-e3   5. h4-f6 X;  se 4. ... e5-f4   5. f8-g7 X)  5. f8-g7 e5-d4   6. h4-f2 X.
         Se 2. ... e5-f4   3. a3xf8 d4-c3   4. h4-g5 f4xh6   5. f8-b4 c3xa5   6. d8-e7 X.
                                               3. a3xf8                       c3-b2
         Se 3. ... e5-f4   4. h4-g5   5. f8-b4   6. d8-e7 X.
                                               4. h4-e1                       b2-a1
         Se 4. ... b2-c1   5. f8-g7 e5-f4   6. d8-c7 f4-e3   7. c7-b6 X.
         Se 4. ... e5-f4   5. f8-g7 b2-c1   6. d8-c7 X.
         Se 4. ... e5-d4   5. e1-c3 X.
                                               5. e1-c3                       a1xd4
                                               6. f8-d6                        X.

         Temas: Bloqueio Angular e Vaivém Negro

PROBLEMA 88
Jogam as brancas e ganham

         Solução na próxima postagem

Finais

Já publicado na outra seção do blog ─ PROBLEMAS E ESTUDOS

FINAL 11
Jogam as brancas e ganham

                                               1. a5-d8                       h4-e1
            1. a5-c3 ou 1. a5-e1. Se você pensa que um desses 2 lances poderá dar ganho às brancas, está equivocado/a.
            1. a5-c3? h4-e7!   2. d6-c7 f8-g7!   3. c3xh8 e7-d8 com empate.
            1. a5-e1? f8-e7   2. d6xf8 h4-f6 com empate. 
           Se1. ... f8-g7, ver Variante 1.
                                               2. d8-f6                        e1-a5
         Se 2. ... e1-h4   3. f6-b2 h4-g5  (se 3.... h4-d8   4. b8-a7 d8-a5  5. a7-f2 a5-e1   6. f2- h4 X)  4. b8-a7 g5-d8   5. a7-f2 d8-a5   6. f2-h4 a5-d2  (se 6. ... a5-b6  7. d6-c7 X)   7. b2-c3 X.
         Se 2. ... e1-d2/f2   3. d6-e7 X.
                                               3. f6-b2                        a5-d8
         Se 3. ... a5-b6   4. b8-a7 b6-a5  (se 4. ... b6-d8   5. a7-f2 d8-a5   6. f2-h4 X)  5. a7-f2 a5-d8   6. f2-h4 X.
                                               4. b8-a7                       d8-a5
                                               5. a7-f2                        a5-d8
         Se 5. ... a5-e1   6. f2-h4 X.
         Se 5. ... a5-d2   6. d6-c7 X.
                                               6. f2-h4                        d8-a5
                                               7. d6-c7                       a5xd8
                                               8. b2-f6                        X.

                                               VARIANTE 1

                                               1. ...                              f8-g7
                                               2. d6-e7                       h4-f2
         Se 2. ... h4-e1   3. d8-a5 e1-f2   4. e7-d8 e 5. b8-e5 para qualquer lance da Dama.
                                               3. b8-a7                       f2-e1
         Se 3. ... f2-h4/g3   4. a7-d4 X.
                                               4. d8-a5                       e1-g3
         Se 4. ... e1-h4   5. a7-b6 h4xd8   6. b6-c7 X.
                                               5. e7-d8                       g3-h4
         Se 5. ... g3-e5   6. d8-f6 X.
                                               6. a7-d4                       h4-g3
                                               7. d8-f6                        g7xc3
                                               8. a5xh4                      X.

PROBLEMAS + O “PÉ-DE-AVESTRUZ” (II)



 PARTE 2
PARTE 1 Sumário (ver postagem de DEZ.2014)
 
                  Problemas

                                                           SOLUÇÃO DO PROBLEMA ANTERIOR

                                               Problema 87

                                                           1. g3-h4                                e5xg3
            Se 1. ... h6xe3, ver Variante 1.
                                                           2. h4xc5                                d6xb4
                                                           3. a3xf8                                 X.

                                                           VARIANTE 1

                                                           1. ...                                        h6xe3
                                                           2. c1xd8                                 d4-c3
            Se 2. ... d4-e3   3. a3xf8 X.
            Se 2. ... d6-f8   3. h4-f6 e5xg7   4. d8-e7 f8xd6   5. a3xh6 X.
            Se 2. ... d6-b8   3. d8-c7 b8xd6   4. a3xf8 d4-c3  (se 4. ... d4-e3   5. h4-f6 X;  se 4. ... e5-f4   5. f8-g7 X)  5. f8-g7 e5-d4   6. h4-f2 X.
            Se 2. ... e5-f4   3. a3xf8 d4-c3   4. h4-g5 f4xh6   5. f8-b4 c3xa5   6. d8-e7 X.
                                                           3. a3xf8                                 c3-b2
            Se 3. ... e5-f4   4. h4-g5   5. f8-b4   6. d8-e7 X.
                                                           4. h4-e1                                 b2-a1
            Se 4. ... b2-c1   5. f8-g7 e5-f4   6. d8-c7 f4-e3   7. c7-b6 X.
            Se 4. ... e5-f4   5. f8-g7 b2-c1   6. d8-c7 X
            Se 4. ... e5-d4   5. e1-c3 X.
                                                           5. e1-c3                                 a1xd4
                                                           6. f8-d6                                 X.

Temas: Bloqueio Angular e Vaivém Negro

88
Jogam as brancas e ganham

A solução desse problema, veja na próxima postagem


O “PÉ-DE-AVESTRUZ” (II)
  1.1.1 O “Pé-de-Avestruz”
(com duas Damas e uma pedra
X uma Dama e uma pedra)

NOTA
            Voltemos ao item 1.1 O “Pé-de-Avestruz” e uma Dama e uma pedra da postagem de JUL (anterior).
            As damas das casas a5 (Diagrama 1); a3 (Diagrama 2); a5 (Diagrama 3); h4 (Diagrama 7); e h6 (Diagrama 8) podem ser substituídas por pedras ─ e o triângulo permanece intacto. Vejamos os Diagramas abaixo, com exceção do último ─ o 6º da série.

1
(Com base no Diagrama 1 do item 1.1)

                                                                I

                                                           1. e5-c3                                 c1-f4
                                                           2. a7-e3                                 f4xb4
                                                           3. a5xc3                                X.

                                                                                  II

                                                           1. ...                                        c1-g5
            Se 1. ... c1-h6   2. e5-g7 h6xf8   3. a7-c5 X.
                                                           2. a7-c5                                 g5-c1
            Se 2. ... g5-d2   3. c5-b4 a3xc5   4. e5-c3 X.
            Se 2. ... g5-d8   3. c5-e3 d8-h4   4. e3-f2 X.
                                                           3. e5-c3                                 c1-f4
                                                           4. c5-e3                                 X.

2
(Com base no Diagrama 2 do item 1.1)

                                                                I

                                                           1. e5-c3                                 c1-f4
                                                           2. a7-e3                                 X.

                                                                                  II

                                                           1. ...                                        c1-g5
            Se 1. ... c1-h6   2. e5-g7 X.
                                                           2. a7-c5                                 g5-d2
            Se 2. ... g5-c1   3. e5-c3 X.
            Se 2. ... g5-d8   3. e5-a1 d8-h4   4. a1-f6 X.
                                                           3. e5-a1                                 d2-e1
            Se 3. ... d2-c1   4. a1-c3 X.
                                                           4. c5-e3                                 e1-h4
                                                           5. e3-f2                                  h4xe1
                                                           6. a1-c3                                 X.

3
(Com base no Diagrama 3 do item 1.1)

                                                                I

                                                           1. e5-g7                                c1-h6
            Se 1. ... c1-f4   2. a5-b6 X.
                                                           2. g7-f8                                 h6-c1
                                                           3. f8-h6                                 X.

                                                                                  II

                                                           1. ...                                        c1-h6
                                                           2. e5-f6                                  h6-c1
                                                           3. f6-g7                                 c1-h6
                                                           4. g7-f8                                 X.

4
(Com base no Diagrama 7 do item 1.1)  

                                             1. d4-b2                                f8-a3
            Se 1. ... f8-c5   2. h4-g5 X.
                                                           2. h2-f4                                 X.

5
(Com base no Diagrama 8 do item 1.1)

                                                                                  I

                                                           1. d4-f6                                  f8-b4
                                                           2. h2-d6                                X.

                                                                                  II

                                                           1. ...                                        f8-b4
            Se 1. ... f8-a3   2. d4-b2 a3xc1   3. h2-f4 X.
                                                           2. h2-f4                                 b4-e1
            Se 2. ... b4-f8   3. d4-f6 X.
            Se 2. ... b4-e7   3. h6-g7 X.
                                                           3. d4-h8                                e1-f2
                                                           4. f4-g5                                 X.

6
      
            Pedra branca em h2 e pedra preta em h4 é final de empate. Mas, a posição vista nesse Diagrama 6, leva, excepcionalmente, as brancas à vitória: 1. h6-d2 a5xe1   2. d4-f2 e1xg3   3. h2xf4 X. 

1.1.1.1 O “Pé-de-Avestruz”
(com duas Damas e uma pedra
X uma Dama e duas pedras)

NOTA
            Retornemos ao item precedente: 1.1.1.
         Ponha-se, no Diagrama 3, mais uma pedra em h8; e, no Diagrama 4, também uma em h8. E o “Pé-de-Avestruz” vai funcionar, normalmente, como se provará a seguir.

1
(Com base no Diagrama 3 do item 1.1.1)

                                                                                      I

                                                           1. e5-b2                                c1-h6
                                                           2. b2-c1                                a7-b6
           Se 2. ... h6-g7   3. a5-b6 X.
           Se 2. ... h8-g7   3. a5-b6 a7xc5   4. a3xd6 X.
           Se 2. ... h6-f8   3. c1-h6 a7-b6  (se 3. ... h8-g7   4. h6-e3 X)  4. a5xc7 h8-g7   5. c7-d8 X.
                                                           3. a5xc7                                h6-g7
                                                           4. c7-d8                                g7-a1
            Se 4. ... g7-e5   5. c1-g5! e5-d4   6. d8-f6! d4xg7   7. a3-f8 X.
            Se 4. ... g7-d4/c3   5. c1-g5! d4/c3-a1  (se 5. ... h8-g7   6. g5-f6 g7xe5   7. a3-d6 X)   6. d8-f6 a1xg7   7. a3-f8 X.
            Se 4. ... g7-b2   5. a3-d6! b2-a1   6. c1-e3 a1-b2   7. e3-g5! h8-g7   8. g5-c1! b2-a3   9. d6-f8 X.

                                                           5. a3-d6                                a1-c3
                                                           6. c1-g5!                               c3-a1
            Se 6. ... h8-g7   7. g5-f6 X.
                                                           7. d8-f6!                                a1xg7
                                                           8. d6-f8                                 g7-h6
                                                           9. g5-c1                                h8-g7
                                                         10. f8-c5                                  X.

                                                                                  II

                                                           1. ...                                        c1-h6
                                                           2. e5-f6                                  h6-g7
           Se 2. ... h6-c1   3. f6-b2, etc X.
                                                           3. a3-c5                                 g7xb6
                                                           4. a5xc7                                a7-b6
            Se 4. ... h8-g7   5. c7-d8 g7-h6   6. d8-a5 h6-g5   7. a5-d2 g5-h4   8. d2-e1 a7-b6   9. e1-f2 b6-a5   10. f2-e1 X.
                                                           5. c7xa5                                h8-g7
                                                           6. a5-b6                                g7-f6
                                                           7. b6-c7                                f6-e5
                                                           8. c7-b8                                e5-d4
                                                           9. b8-f4                                 X.

2
(Com base no Diagrama 4 do item 1.1.1)

         Observação ─ As brancas se cuidem. Não podem permitir seja das pretas o lance inicial, se a dama preta estiver em a5 ou e1, devido à ameaça: 1. ... h6-g5   2. h4xf6 a5-d8 ou e1-h4 com empate.

                                                                                  I

                                                          1. d4-a1                                h6-g5
           Se 1. ... f8-a3   2. a1-b2 a3xc1   3. h2-f4 c1xg5   4. h4xf6 X.
                                                          2. h4xf6                                f8-c5
                                                          3. h2-f4                                  c5-b4
                                                          4. f4-h6                                 b4-f8
           Se 4. ... b4-d6   5. h6-f8 d6-c7   6. f6-e7 c7-d8   7. a1-f6 X.
                                                           5. a1-e5                                 f8-c5
                                                           6. h6-f8                                 c5-b6
                                                           7. f6-e7                                  b6-d8
                                                           8. e5-f6                                  X.

                                                                                  II

                                                           1. ...                                        f8-g7
            Se 1. ... f8-b4   2. h4-g5 X.
            Se  1. ... f8-a3   2. d4-b2 a3xc1   3. h2-f4 c1xg5   4. h4xf6 X.
            Se 1. ... h8-g7   2. d4xh8 h6-g5   3. h4xf6 f8-c5   4. h2-f4 c5-b4   5. f4-h6 b4-d6   6. h6-f8 d6-c7   7. f6-e7 c7-d8   8. h8-f6 X.
                                                           2. h2-e5                                g7-f8
           Se 2. ... h6-g5   3. h4xf6 g7-f8   4. d4-e3 f8-b4  (se 4. ... f8-h6   5. e3-c1 h6-f8   6. c1-h6 f8-b4   7. h6-f8 X;  se 4. ... f8-g7   5. e3-c1 g7-f8   6. c1-a3 f8-h6   7. f6-e7 X)  5. e3-h6 b4-f8  (se 5. ... b4-a3   6. h6-f8 X)   6. e5-b2 f8-a3   7. b2-c1 a3-b4   8. f6-e7 b4xf8   9. c1-a3 X.
                                                           3. e5-f4                                  f8-e7
           Se 3. ... f8-g7   4. d4-a1 g7-f8   5. f4-h2 X.
                                                           4. f4-h2                                 e7-f8
                                                           5. d4-a1                                X.