segunda-feira, 15 de fevereiro de 2016

PROBLEMAS + O “PÉ-DE-AVESTRUZ” (IX) ► FIM DO “PÉ-DE-AVESTRUZ”




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


                  Problemas

                                                           SOLUÇÃO DO PROBLEMA ANTERIOR

                                               Problema 94

                                                           1. g1-f2                                 h4xe1
                                                           2. c3-a5                                 e1xa1
                                                           3. a5-d8                                f6xh4
                                                           4. d8xh8                               X.

Temas: Mate a Descoberto, Espelho e Mate em Ângulo

95
 Jogam as brancas e ganham

A solução desse problema, veja na próxima postagem


O “PÉ-DE-AVESTRUZ” (IX)
1.7 No rastro do “Pé-de-Avestruz” 

         O Pé-de-Avestruz também funciona (quase sempre) com o acréscimo de:
a)    pedra branca em g1;
b)    pedra preta em h2.

1

                                                       I

                                                           1. h6-c1                                a3-b4
            Se 1. ... a3-f8   2. d4-g7 X.
                                                           2. c1-d2                                X.

                                                                                  II

                                                           1. ...                                       a3-f8
                                                           2. h6-f4                                 f8-h6
                                                           3. f4-c1                                 X.

2

                                                         I

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

                                                                                  II

                                                           1. ...                                       c1-h6
            Se 1. ... c1-g5   2. a5-b4 X.
                                                           2. e5-g7                                h6xf8
                                                           3. a7-c5                                X.

3

                                                                                  I

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

                                                                                  II

                                                           1. ...                                       c1-g5
            Se 1. ... c1-h6   2. e5-g7 X.
                                                           2. a3-e7                                 X.

4

            Com a Dama em c1:

                                                                                  I

                                                           1. e5-g7                                c1-h6
            Se 1. ... c1-f4   2. a5-b6 X.
                                                           2. a5-d8                                h6xf8
                                                           3. d8-e7                                X.

                                                                                  II

                                                           1. ...                                       c1-h6
                                                           2. e5-b2                                h6-c1
            Se 2. ... h6-f8   3. a5-b4 f8-h6   4. b2-g7 X.
                                                           3. a3-f8                                 c1xa3
                                                           4. a5-b4                                X.

            Com a Dama em g3:

                                                           1. a3-d6                                g3-e1
            Se 1. ... g3-h4   2. d6-e7 X.
                                                           2. d6-c7                                a7-b6
                                                           3. e5-c3                                b6xd8
                                                           4. c3-d2                                X.

5

            Com a Dama em c1:

                                                                                   I

                                                           1. f8-a3                                  b8-a7
            Se 1. ... c1-d2   2. a3-b4 X.
                                                           2. d4-c3                                c1-h6
                                                           3. c3-g7                                X.

                                                                                  II

                                                           1. ...                                       b8-a7
            Se 1. ... c1-h6, ver Com a dama em h6 (I).
                                                           2. d4-e5                                c1-h6
                                                           3. d8-a5                                h6-g5
                                                           4. f8-e7                                 X.

            Com a Dama em h6:

                                                                                  I

                                                           1. d4-b2                               b8-a7
            Se 1. ... h6-c1   2. d8-a5 X.
            Se 1. ... h6-e3   2. d8-c7 X.
                                                           2. b2-c1                                X.

                                                                                  II

                                                           1. ...                                       b8-a7
                                                           2. f8-d6                                 h6-c1
            Se 2. ... h6-d2   3. d4-b6 X.
            Se 2. ... h6-f8   3. d6-a3 f8-h6   4. d4-g7 X.
                                                           3. d4-c3                                c1-h6
            Se 3. ... c1-a3   4. d8-e7 X.
                                                           4. c3-f6                                 h6-d2
                                                           5. d6-f4                                 X.

6

                                                                                  I

                                                           1. d4-f6                                 h6-e3
                                                           2. b8-f4                                 X.

                                                                                  II

                                                           1. …                                      h6-d2
            Se 1. ... h6-c1   2. d4-b2 X.
                                                           2. f8-b4                                 X.

7

            Com a Dama em h6:

                                                                                  I

                                                           1. d4-f6                                 h6-e3
                                                           2. b8-f4                                 X.

                                                                                  II

                                                           1. …                                      h6-d2
            Se 1. ... h6-c1   2. d4-b2 X.
                                                           2. d8-e7                                X.

            Com a Dama em e1:

                                                           1. d8-h4                                e1-a5
                                                           2. b8-c7                                X.

8

            Com a Dama em f8:

                                                                                  I

                                                           1. d4-e3                                f8-a3
            Se 1. … h8-g7   2. e3-d4 X.
                                                           2. h6-f4                                 h8-g7
                                                           3. e3-c5                                 X.

                                                                                  II
                                                           1. ...                                       f8-a3
                                                           2. d4-e3                                a3-f8
            Se 2. ... h8-g7   3. h6xf8 a3-b2   4. f8-d6 b2-a1   5. d6-f4 X.
                                                           3. h6-f4                                 X.

            Com a Dama em a3:

                                                                                  I

                                                           1. d4-e3                                a3-f8
                                                           2. h6-f4                                 X.

                                                                                  II

                                                           1. ...                                       h8-g7
            Se 1. ... a3-f8   2. d4-e3, etc X.
                                                           2. h6xf8                                a3-c1
                                                           3. f8-h6                                 c1-a3
                                                           4. h6-f4                                 a3-f8/c1
                                                           5. d4-e3                                X.

9

            Com a Dama em f8:

                                                                                  I

                                                           1. c1-f4                                 f8-a3
            Se 1. ... h6-g5   2. f4xh6 f8-a3   3. h6-f4 a3-c1/f8   4. d4-e3 X.
                                                           2. d4-b2                                X.

                                                                                  II

                                                           1. ...                                       f8-a3
            Se 1. ... f8-b4   2. c1-d2 b4xe1   3. d4-f2 X.
                                                           2. h4-e7                                a3xf8
                                                           3. c1-a3                                h6-g5
                                                           4. d4-c5                                X.

            Com a Dama em a3:
                                                                                  I

                                                           1.c1-f4                                  a3-f8
            Se 1. ... h6-g5   2. f4xh6 a3-f8   3. d4-b2 f8-a3   4. h4-g5 X.
                                                           2. h4-g5                                f8-a3
            Se 2. ... f8-b4   3. f4-g3 X.
                                                           3. d4-b2                                a3xc1
                                                           4. g5-h4                                X.

                                                                                  II

                                                           1 ...                                        a3-f8
                                                           2. c1-f4                                 h6-g5
                                                           3. f4xh6                                f8-a3
                                                           4. h6-f4                                 a3-c1/f8
                                                           5. d4-e3                                X.

10
    

            Com a Dama em f8:

                                                                                  I

                                                           1. c1-f4                                  f8-g7
            Se 1. … f8-a3   2. d4-b2 X.
            Se 1. ... f8-b4   2. d4-c3 X.
            Se 1. ... h8-g7   2. d4xh8 f8-a3  (se 2. ... h6-g5   3. f4xh6 f8-a3   4. h8-d4 a3-f8   5. h6-f4  f8-h6    6. d4-e3 X)  3. h8-b2 X.
            Se 1. ... h6-g5   2. f4xh6 f8-a3  (se 2. ... f8-b4   3. d4-g7 X)   3. h6-f4 a3-f8  (se 3. ... a3-c1   4. d4-e3 X)   4. d4-e3 h8-g7   5. f4-d6 X.
                                                           2. d4-a1                                g7-f8
                                                           3. a1-f6                                 f8-g7
            Se 3. ... h8-g7   4. f6xh8 h6-g5   5. f4xh6 f8-a3   6. h8-d4 a3-f8   7. h6-f4  f8-h6   8. d4-e3 X.
                                                           4. h4-e1                                g7xg3
                                                           5. e1xh4                               X.

                                                                                  II

                                                           1. …                                      f8-g7
            Se 1. … f8-b4  2. c1-f4 b4-f8  (se 2. … b4-e1  3. d4-f6 h6-g5   4. f4xh6 e1-a5   5. f6-d4 h8-g7   6. h6xf8 a5-d2   7. f8-h6 d2-a5   8. h6-d2 X)  3. d4-f6 f8-g7  4. h4-e1 X.
            Se 1. ... f8-a3   2. c1-f4 a3-f8  (se 2. ... a3-b4   3. d4-c3 X)   3. d4-f6 f8-g7   4. h4-e1 X.
                                                           2. d4-a1                                g7-f8
                                                           3. c1-f4                                 f8-a3
                                                           4. a1-b2                                X.

            Com a Dama em a3:

                                                                                  I

                                                           1.  c1-f4                                 a3-f8
            Se 1. ... h8-g7   2. d4xh8 h6-g5  (se 2. ...a3-f8   3. h8-d4 X)  3. f4xh6 a3-c1  (se 3. ... a3-f8   4. h8-d4 f8-a3   5. h6-f4 X)  4. h4-g5 X.
            Se 1. ... h6-g5   2. f4xh6 a3-f8   3. h6-f4 f8-g7  (se 3. ... f8-h6   4. d4-e3 X)  4. d4-f6 X.
                                                           2. d4-f6                                 f8-g7
            Se 2. ... h6-g5   3. f4xh6 f8-a3   4. f6-d4 a3-f8   5. h6-f4 f8-h6   6. d4-e3 X.
                                                           3. h4-e1                                g7xg3
                                                           4. e1xh4                               X.

                                                                                  II

                                                           1. ...                                        a3-b4
            Se 1 ... a3-f8   2. c1-f4 como em Com a Dama em f8 (I).
                                                           2. c1-f4                                  b4-e1
            Se 2. ... b4-f8   3. d4-e5 X.
                                                           3. d4-f6                                 X.

            Com a Dama em a5:

                                                                                  I

                                                           1.  c1-f4                                a5-d8
            Se 1. ... a5-b4   2. d4-c3 X.
            Se 1. ... a5-e1   2. d4-f6 X.
                                                           2. d4-c3                                d8-a5
                                                           3. c3-b4                                X.

                                                                                  II

                                                           1. ...                                       a5-b4
                                                           2.  c1-f4                                 b4-e1
            Se 2. ... b4-f8   3. d4-a1 X.
                                                           3. d4-f6                                 X.

11

                                                                                  I

                                                           1. d4-e5                                f8-c5
            Se 1. ... f8-a3   2. e5-b2 a3xc1   3. e1-d2 c1xe3   4. h6xd2 h4-g3   5. d2-e1 X.
            Se 1. ... h4-g3   2. e1xh4 f8-a3   3. e5-d4 a3-f8   4. h6-f4 f8-h6   5. d4-e3 X.
                                                           2. e5-g3                                h4xf2
                                                           3. e1xg3                               h2xf4
                                                           4. h6xa7                               X.

                                                                                  II

                                                           1. ...                                       f8-d6
            Se 1. ... f8-a3   2. d4-b2 X.
                                                           2. d4-e5                                d6xg3
                                                           3. h6-g5                                h4xf6
                                                           4. e1xd8                               X.

12

                                                                                  I

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

                                                                                  II

                                                           1. ...                                       c1-g5
            Se 1. ... c1-h6   2. e5-g7 X.
            Se 1. ... c1-f4   2. e5xg3 h2xf4   3. a7-d4 f4-e3   4. d4xf2 a3-b2   5. f2-d4 b2-c1   6. a5-b6 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.

13


                                                                                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
            Se 4. ... e1-f2   5. e3-a7   6. f2-g3 a7-f2 X.
                                                           5. e3-f2                                  X.

14

         Com a Dama em c1:

                                                                                  I

                                                           1. e5-g7                                c1-h6
            Se 1. ... c1-f4   2. a5-b6 X.
                                                           2. g7-f8                                 h6-c1
            Se 2. ... h6-d2   3. a5-b6 X.
                                                           3. f8-h6                                 X.

                                                                                  II

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

            Com a Dama em g3:

                                                           1. e5-b8                                g3-e1
            Se 1. ... g3-h4   2. a3-e7 X.
                                                           2. a3-e7                                e1-c3
                                                           3. a5-b6                                X.

15

            Com a Dama em c1:

                                                                                  I

                                                           1. e5-b2                                c1-h6
            Se 1. ... c1-f4   2. b2-g7 h8xf6   3. a5-b6 X.
            Se 1. ... h8-g7   2. b2xh8 e estamos no Diagrama 14.
            Se 1. ... a7-b6   2. a5xc7 c1-d2   3. b2-e5 d2-g5   4. a3-c1 como em Com a Dama em c1 (II), lance 3.
                                                           2. b2-c1                                a7-b6
            Se 2. ... h6-g7   3. a5-b6 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.
            Se 2. ... h8-g7   3. a5-b6 a7xc5   4. a3xd6 X.
                                                           3. a5xc7                                h6-g7
            Se 3. ... h6-f8   4. c1-h6 h8-g7   5. c7-d8 X.
                                                           4. c7-d8                                 g7-b2
            Se 4. ... g7-a1   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.
            Se 4. ... g7-e5   5. c1-g5! e5-d4  (se 5. ... h8-g7   6. g5-f6 X)  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.
                                                           5. a3-d6                                b2-a1
            Se 5. ... b2-c3   6. c1-g5 c3-a1   7. d8-f6! X.
            Se 5. ... b2-d4   6. c1-g5 X.
                                                           6. c1-e3                                 a1-b2
                                                           7. e3-g5!                               h8-g7
                                                           8. g5-c1!                               b2-a3
                                                           9. d6-f8                                 X.

                                                                                  II

                                                           1. ...                                       a7-b6
            Se 1. ... c1-h6   2. e5-f6 h6-g7  (se 2. ... h6-c1   3. f6-b2 como se vê em Com a Dama em c1[I]);  se 2. ... a7-b6   3. a5xc7 e reveja o Diagrama 8)  3. a3-c5 g7xb6   4. a5xc7 e estamos no lance 4 de Com a Dama em g3.
                                                           2. a5xc7                                c1-g5
            Se 2. ... c1-e3   3. a3-c1 e3-c5   4. c1-e3 c5xf2   5. g1xe3 h2-g1   6. e3-f4 X.
            Se 2. ... c1-d2   3. a3-c1 d2-b4   4. c7-d8 b4-f8   5. d8-h4 f8-a3   6. c1-e3 a3-c1  (se 6. ... a3-f8   7. e5-f4 h8-g7   8. f4-d6 X)  7. e5-f4 h8-g7   8. f4-h6 X.
            Se 2. ... c1-h6   3. a3-c1 h6-f8   4. c7-d8 f8-b4   5. d8-h4 b4-a3   6. c1-e3 X.
                                                           3. a3-c1                                 g5-d8
                                                           4. c7-b8                                d8-h4
                                                           5. b8-c7                                h4-e1
                                                           6. c7-d8                                e1-b4
                                                           7. d8-h4                                b4-a3
            Se 7. ... b4-f8   8. c1-e3 f8-a3  (se 8. ... f8-h6   9. e5-f4 X)  9. e5-f4 X.
                                                           8. c1-e3                                 a3-f8
                                                           9. e5-f4                                  X.

            Com a Dama em g3:

                                                           1. e5-b8                                g3-h4
            Se 1. ... g3-e1   2. a3-f8 h8-g7  (se 2. ... e1-h4   3. f8-e7 e veja o 2º lance, adiante;  se 2. ... e1-c3   3. a5-b6 X)  3. f8xh6 e1-h4  (se 3. ... e1-c3   4. b8-g3 X)  4. h6-f8 a7-b6 (se 4. ... h4-e1   5. f8-e7 e1-h4   6. b8-c7 X)   5. a5xc7 h4-d8   6. g1-f2 d8xg1   7. b8-a7 X.
                                                           2. a3-e7                                 h4xd8
                                                           3. b8-c7                                d8xb6
                                                           4. a5xc7                                h8-g7
            Se 4. ... a7-b6   5. c7xa5 h8-g7   6. a5-b6 g7-f6   7. b6-c7 f6-e5 (se 7. ... f6-g5   8. c7-d8 g5-f4   9. d8-a5 f4-e3   10. a5-e1 X)   8. c7-b8 e5-d4   9. b8-f4 d4-c3   10. f4-c1 X.
                                                           5. c7-d8!                               g7-h6
                                                           6. d8-f6                                 a7-b6
                                                           7. f6-d4                                 b6-a5
                                                           8. d4-c3                                h6-g5
                                                           9. c3-d2                                g5-h4
                                                        10. d2-e1                                 a5-b4
                                                        11. e1xa5                                h4-g3
                                                        12. a5-e1                                 X.

16

            Com a Dama em b4:

                                                                                  I

                                                           1. d4-f6                                 b4-e1
            Se 1. ... b4-f8   2. c1-f4 X.
            Se 1. ... b4-c5   2. c1-f4 c5-f8   3. f4-e3 f8-b4   4. e3-c5 X.
            Se 1. ... b4-a5   2. c1-e3 a5-b4   3. e3-c5 X.
            Se 1. ... b4-a3   2. c1-f4 a3-f8   3. f4-e3 X.
                                                           2. c1-f4                                 e1-f2
                                                           3. g1xe3                               h2-g1
                                                           4. e3-d4                                g1xa7
                                                           5. f6-d4                                 X.

                                                                                   II

                                                           1. ...                                       b4-a3
            Se 1. ... b4-f8   2. c1-a3 h6-g5   3. h4xf6 f8-h6   4. f6-g7 X.
            Se 1. ... b4-a5   2. d4-f6 a5-b4  (se 2. .. a5-b6/e1  3. c1-f4 X)  3. c1-e3 b4-f8  4. e3-f4 X.
                                                           2. d4-f6                                 a3-b4
            Se 2. ... a3-f8   3. c1-f4 X.
            Se 2. ... a3-c5   3. c1-f4 c5-f8   4. f4-e3 X.
                                                           3. c1-e3                                 b4-f8
                                                           4. e3-f4                                  X.

            Com a Dama em a3:

                                                                                  I

                                                           1. d4-f6                                 a3-b4
            Se 1. ... a3-f8   2. c1-f4 X.
            Se 1. ... a3-c5   2. c1-f4 c5-f8   3. f4-e3 X.
                                                           2. c1-e3                                 b4-f8
                                                           3. e3-f4                                  X.

                                                                                  II

                                                           1. ...                                       a3-f8
                                                           2. c1-a3                                 h6-g5
                                                           3. h4xf6                                f8-h6
                                                           4. f6-g7                                 X.

            Com a Dama em a5:

                                                                                  I

                                                           1. d4-f6                                 a5-b4
            Se 1. ... a5-b6/e1   2. c1-f4 X.
                                                           2. c1-e3                                 b4-f8
                                                           3. e3-f4                                  X.

                                                                                  II

                                                           1. ...                                        a5-b4
                                                           2. d4-f6                                
e continua como em Com a Dama em b4 (I.)
 (FIM DO “PÉ-DE-AVESTRUZ”)