quinta-feira, 23 de junho de 2016

DAMAS para crianças e adolescentes 62



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 Waldemar Bakumenko, de um Antonio Fabelo Chaves, de um Lourival Mendes França.
         E vocês também poderão fazer bonito no tabuleiro!


PARTE 3

PARTE 2 Sumário (ver postagem 55, de DEZ.15)


 PARTIDAS
PARTIDA 55
Bakumenko X Cardoso*

                                                                          1. c3-d4                        d6-c5
                                               2. b2-c3                        c7-d6
                                               3. g3-h4                       d6-e5
                                               4. f2-g3                        e7-d6
                                               5. g3-f4                        e5xg3
                                               6. h4xf2                        h6-g5
                                               7. h2-g3                       g5-h4
                                               8. g3-f4                        f8-e7
                                               9. a1-b2                       ...
         (Uma idéia original da brancas!)
                                               9. ...                              b8-c7
                                             10. a3-b4                        ...
         (As brancas jogam magistralmente!)
                                             10. ...                               c5xa3
                                             11. f4-e5                         d6xf4
                                             12. e3xg5                       f6-e5?
                                             13. d4xf6                        g7xe5
                                             14. c3-b4!!                      ...
         (Um golpe surpreendente!)
                                             14. ...                               h4xf6
                                             15. b2-c3                        a3xc5
                                             16. c3-d4                        c5xe3
                                             17. d2xf8
         E as pretas abandonam.


______________________________

* Do livro “Manual do Jogo de Damas”, p. 232. Luiz Cabrerizo, São Paulo ─ SP


O “PÉ-DE-AVESTRUZ” (VII)

 FINAIS DE TRÊS DAMAS (COM ESTRUTURA ATÍPICA)
X UMA DAMA E DUAS PEDRAS

1.3 O “Pé-de-Avestruz”
(com estrutura atípica)
e uma Dama e duas pedras (
I)

         Examine a série de diagramas adiante (com exceção do primeiro diagrama), e veja que a forma triangular do Pé-de-Avestruz continua a mesma, porém a estrutura é outra.
         O vértice continua inalterado, porém a base, não. A base ─ neste item 1.3 ─ tem sempre duas pedras; e uma Dama branca se desloca da base para a casa vazia mais próxima do vértice.
1
 

         Observação 1ª – O triângulo funciona, nesse Diagrama 1, perfeitamente, e não parcialmente, como disse no meu livro “O Pé-de-Avestruz e outros ensaios”, p. 66, Diagrama I; mas as 3 damas, vejam só, têm de se mudar para outras casas a fim de atacar de longe...
         Observação 2ª – Admito que a solução desse Final 1 teve muitíssima influência de “Três Damas contra dama e Duas Pedras,” publicado por C. A. Ferrinho, na (extinta) revista “Diagonal” nº 17, p. 8-10. Em bom Português: o  Pé-de-Avestruz não daria conta (sozinho) do recado...

         Com a Dama em h6:

                                                          I

                                                             1. f8-e7                        h6-c1
         Se 1. ... h6-d2   2 d4-b6 X.
         Se 1. ... h6-f8, ver Variante 1.
                                               2. e7-d8                       c1-h6
                                               3. d8-c7                       h6-c1
         Se 3. ... h6-f8   4. c7-d8 como no 2º lance da Variante 1.
                                               4. c7-g3                       c1-h6
         Se 4. ... c5-g1   5. d4-b6 a5xc7   6. b8xh6  a3-b2   7. g3-e5 X.
                                               5. b8-a7                       h6-c1
         Se 5. ... h6-d2   6. g3-c7 e pule para o 7º lance, adiante.
         Se 5. ... h6-f8   6. g3-c7 f8-e7  (se 6. ... f8-b4   7. c7-d8 X)  7. c7-d8 e7-f8   8. d4-c5 f8xb4   9. a7-b6 X.
                                               6. g3-d6                       c1-d2
                                               7. d6-c7                       d2-e1
         Se 7. ... d2-c1   8. c7-b8 X.
                                               8. a7-b6                       e1-h4
         Se 8. ... e1-d2   9. c7-d8 X.
                                               9. d4-f6                        h4xe7
         Se 9. ... h4xd8   10. b6-a7 d8xb6   11. a7xd4 X.
                                             10. c7-d8                       a5xc7
                                             11. d8xf6                       X.

            VARIANTE 1

                                                             1. ...                              h6-f8
                                               2. e7-d8                       f8-h6
         Se 2. ... f8-b4   3. d4-b6 a5xc7   4. d8xc3 X.
                                               3. d8-c7                       h6-f8
         Se 3. ... h6-c1, retorne ao lance nº 4 da linha principal.
                                               4. b8-a7                       f8-b4
         Se 4. ... f8-e7   5. c7-d8 e7-d6   6. d4-c5 X.
                                               5. c7-d8                       b4-d6
         Se 5. ... b4-e1   6. d4-c3 X.
         Se 5. ... b4-c5   6. d4xb6 a5xc7   7. d8xa5 a3-b2   8. a5-c3 X.
                                               6. d4-c5                       d6xb4
                                               7. a7-b6                       a5xc7
                                               8. d8xc3                      X.

                                                                  II

                                               1. ...                              h6-c1
                                               2. f8-h6                        X.

         Com a Dama em g5:

                                                                  I

                                               1. d4-a7                       g5-h6
         Se 1. ... g5-c1   2. f8-h6 c1-b2   3. a7-b6 X.
         Se 1. ... g5-h4   2. f8-e7 h4xd8   3. b8-c7 X.
         Se 1. ... a3-b2   2. f8-e7 g5xd8   3. b8-c7 X.
         Se 1. ... a5-b4   2. f8-c5 b4xd6   3. b8xh6 a3-b2   4. a7-d4 X.
                                               2. b8-e5                       h6-d2
         Se 2. ... h6-g5   3. f8-e7   4. e5-c7 X.
         Se 2.  ... a5-b4   3. f8-g7 h6xf8   4. e5-d6 X.
                                               3. f8-h6                        d2-b4
         Se 3. ... d2-e1   4. h6-g5 e1-b4  (se 4. ... e1-h4    5. e5-c7 X)  5. g5-d8 a3-b2   6. a7-b6 a5xc7   7. d8xa1 X.
                                               4. h6-g5                       b4-f8
         Se 4. ... b4-e1   5. g5-d8 X.
                                               5. e5-d4                       f8-d6
         Se 5. ... f8-b4   6. g5-d8 X.
                                               6. a7-b8                       d6-b4
         Se 6. ... d6-f8   7. g5-d8 e veja em Com a dama em h6, na Variante 1, o lance nº 2.
                                               7. g5-d8                       b4-e1
         Se 7. ... b4-f8   8. b8-a7 X.
                                               8. b8-g3                       e1xh4
                                               9. d4-f6                        X.

                                                                  II

                                               1. ...                              a5-b4
         Se 1. ... g5-h4, ver Com a Dama em h4.
         Se 1. ... g5-d8, ver Com a Dama em d8.
                                               2. f8-c5                        X.

         Com a Dama em h4:

                                                          I

                                               1. f8-c5                        h4-e1
                                               2. c5-e7                       e1-b4
         Se 2. ... e1-h4   3. d4-a7 X.
                                               3. e7-d8                       b4-f8
         Se 3. ... b4-e1   4. b8-g3 X.
                                               4. b8-a7                       X.

                                                                  II

                                               1. ...                              h4-e1
e observe Com a Dama em e1.

         Com a Dama em d8:

                                                          I

                                               1. d4-a7                       d8-h4/g5
                                               2. f8-e7                        X.

                                                                  II

1.   ...                              d8-h4
         Se 1. ... d8-g5   2. d4-a7 como já mostrado em Com a Dama em g5.
                                               2. f8-c5
como já visto em Com a Dama em h4.

         Com a Dama em e1:

                                                          I

                                               1. f8-e7
e retorne a Com a Dama em h4 (I), 2º lance.

                                                                  II

                                               1. ...                              e1-h4
                                               2. f8-c5
como no 1º lance de Com a Dama em h4.

2
 
Pé-de-Avestruz: estrutura atípica

         Com a dama em d8:

                                               1. e5-a1                       d8-b6
         Se 1. ... d8-g5   2. a1-f6 X.
                                               2. c5-g1                       b6-d8
                                               3. a3-f8                        d8-h4
                                               4. g1-f2                        h4xe1
                                               5. a1-c3                       X.

         Com a Dama em e1:

                                                                  I

                                               1. c5-e3                       e1-h4
                                               2. e3-f2                        h4xe1
                                               3. e5-c3                       X.

                                                                  II

                                        1. ...                              e1-d2
                                               2. e5-b2                       d2-e1
         Se 2. ... d2-c1   3. b2-c3 X.
                                               3. c5-g1                       e1-h4
                                               4. g1-f2                        h4xe1
                                               5. b2-c3                       X.

         Com a Dama em c1:

                                               1. e5-c3                       X.

3
 
Pé-de-Avestruz: estrutura atípica

         Com a Dama em a5:

                                                                  I

                                               1. d4-b2                       a5-c7
         Se 1. ... d8-c7   2. b2-e5 c7-b6  (se 2. ... a5-e1   3. e5-c3 X)  3. e5-b2 b8-a7   4. b2-e5 a5-e1   5. e5-c3 X.
         Se 1. ...  b8-a7   2. b2-e5 a5-b6  (se 2. ... a7-b6   3. e5-b2 X)  3. d6-c7 b6-a5  (se 3. ... b6-e3   4. e5-c3 d8xb6   5. c3-d4 X)   4. e5-g3 d8xb6   5. g3-e1 X.
                                               2. d6-h2                       c7-a5
                                               3. b2-f6                        d8-c7
         Se 3. ... b8-a7   4. h2-g3 a5-b6  (se 4. ... a7-b6   5. g3-e1 X)  5. g3-c7 b6-a5   6. f6-h4 d8xb6   7. h4-e1 X.
                                               4. h2-g3                       a5-b6
         Se 4. ... c7-b6   5. g3-e1 X.
         Se 4. ... a5-e1   5. f8-e7 e1xh4   6. e7-d8 X.
         Se 4. ... a5-d2   5. g3-d6 X.
                                               5. g3-e1                       b6-a7
         Se 5. ... b6-e3   6. e1-a5 e3-b6   7. f6-c3 X.
         Se 5. ... b6-g1   6. idem.
         Se 5. ... b8-a7   6. e1-a5 X.
                                               6. e1-a5                       a7-b6
                                               7. f6-c3                        b8-a7
                                               8. f8-d6                        X.

                                                                  II

                                        1. ...                              b8-a7
         Se 1. ... a5-c7   2. d6-h2 c7-a5   3. d4-b6 a5xc7   4. f8-d6 X.
         Se 1. ... d8-c7   2. d4-e5 c7-b6   3. e5-f6 b8-a7   4. f6-e5 a5-e1   5. e5-c3 X.
                                               2. d6-b8

e retorne, agora, à postagem 59 ─ Diagrama 5.2, Com a Dama em a5 (II).

         Com a Dama em h6:

                                                                  I

                                               1. d4-f6                        d8-c7
         Se 1. ... b8-a7   2. d6-h2 a7-b6   3. h2-g1 b6-a5   4. f6-h8 d8-c7  (se 4. ... h6-c1   5. h8-b2 X)  5. g1-h2 c7-b6   6. h2-g1 X.
                                               2. f6-e5                        c7-b6
         Se 2. ... h6-c1   3. e5-b2 X.
                                               3. e5-b2                       b6-a5/b8-a7
                                               4. b2-c1                       X.

         Nota ─ Alberico C. Mota descobre grave erro na minha solução, cujo lance inicial é das pretas. E segue, na íntegra, a solução do famoso damista:

                                                                  II

                                                           1. ...                                       h6-g5
                                                           2. d4-h8                              g5-h4
            Se 2. ... b8-a7   3. d6-a3 X.
                                                           3. d6-b4                              d8-c7
            Se 3. ... h4-e1   4. b4-a5 X.
            Se 3. ... b8-c7   4. b4-e1 X.
            Se 3. ... b8-a7   4. b4-e1 d8-c7   5. f8-e7 h4xd8   6. e1-h4 X.
                                                           4. b4-e1                              c7-b6
            Se 4. ... b8-a7   5. f8-e7   6. e1-h4 X.
            Se 4. ... h4-g5, idem.
                                                           5. h8-a1                              h4-d8
            Se 5. ... b8-c7   6. f8-e7   7. e1-h4 X.
            Se 5. ... b8-a7   6. f8-d6 h4-d8   7. e1-h4 X.
            Se 5. ... b6-a5  6. e1-f2   7. a1-c3 X.
                                                           6. e1-h4                              d8-c7
                                                           7. h4-d8                              X.

         Com a Dama em h4:

                                               1. d6-f4                        d8-c7
                                               2. f8-c5                        h4-d8
         Se 2. ... h4-e1, ver Variante 1.
                                               3. f4-d2                        b8-a7
         Se 3. ... d8-h4, ver Variante 2.
                                               4. d4-c3                       c7-b6
         Se 4. ... d8-h4   5. c5-f2 X.
                                               5. c3-d4                       d8-h4
         Se 5. ... b6-a5, ver Diagrama 2.
                                               6. d2-e1                       h4-d8
         Se 6. ... b6-a5   7. d4-a1 h4-d8   8. e1-f2 d8-h4   9. c5-a3 X.
                                               7. e1-h4                       b6-a5
                                               8. d4-f6                        X.

                                               VARIANTE 1

                                               2. ...                              h4-e1
                                               3. d4-f6                        e1-a5
         Se 3. ... e1-h4   4. f6-d8 c7-b6  (se 4. ... b8-a7   5. d8xa5 X)  5. d8xa5 h4-f6   6. f4-c7 X.
                                               4. c5-e7                       a5-b6
         Se 4. ... a5-e1   5. f4-g3 X.
         Se 4. ... c7-b6   5. f4-e5 b8-a7   6. e5-f4 a5-e1   7. f4-g3 X.
                                               5. f4-d2                        b6-a5
         Se 5. ... b6-a7   6. d2-a5 a7-b6   7. f6-h8 b8-a7   8. e7-d6 X.
         Se 5. ... b6-f2   6. d2-a5 X.
         Se 5. ... b8-a7   6. d2-a5 X.
                                               6. d2-e1                       a5-b6
                                               7. e1-a5                       b8-a7
                                               8. e7-f8                        X.

                                               VARIANTE 2

                                               3. ...                              d8-h4
                                               4. d2-e1                       b8-a7
         Se 4. ... h4-d8   5. e1-h4 X.
         Se 4. ... h4-g5   5. e1-a5 g5-d8   6. c5-a7 c7-d6   7. a5-b4 d8-e7    8. d4-e5 d6xf4   9. b4xf8 X.
                                               5. d4-c3                       c7-b6
         Se 5. ... h4-g5   6. c5-d6 X.
         Se 5. ... h4-d8   6. e1-h4 c7-b6   7. c3-a1 X.
                                               6. c3-d4                       h4-d8
         Se 6. ... b6-a5   7. d4-a1 h4-d8   8. e1-f2 d8-h4   9. c5-a3 X.
                                               7. e1-h4                       b6-a5
                                               8. d4-f6                        X.
(CONTINUA)

DESAFIO

Problemas

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

Solução da postagem anterior

              Problema 98

                                               1. b2-c3                       h8xb2
         Se 1. ... e1xb4   2. a5xd8 f2-e1 (se 2. ... h8-b2   3. a1xf6 h4xe7   4. d8xe1 X)   3. g1-f2 e1xg3   4. h2xe5 h8xd4   5. a1xf6 X.
                                               2. a1xd8                      e3-d2
         Se 2. ... e1-d2   3. a5xg3 h4xe1   4. g1xd4 X.
                                               3. g1xc1                      e1-f2
         Se 3. ... h4-f2   4. c1-d2 X.
                                               4. c1-g5                       h4xf6
                                               5. d8xe1                      X.

         Temas: Angular Branco, Espelho e Mate Cruzado

 PROBLEMA 99
Jogam as brancas e ganham

             Solução na próxima postagem

            Justificação:
            Brancas: a3D, b4, e1, e7D, f6, g5D, h6D
            Pretas: a7D, b8D, d4, g1D, g3, h2D
             1. b4-c5 d4xb6   2. e7-c5 b6xd4   3. g5-e3 d4xf2