
As it seems, google did a typo when digitizing this book.
Solution is mate in 64 moves or less
Moderator: Ras

To get this position White needs 18 moves (6 to get Black King in the corner a8 and 12 b6<->c7 for pawn moves)Nordlandia wrote:I managed to view the original book by using proxy in google books
As it seems, google did a typo when digitizing this book.
Solution is mate in 64 moves or less
Too optimistic !!!lech wrote:To get this position White needs 18 moves (6 to get Black King in the corner a8 and 12 b6<->c7 for pawn moves)Nordlandia wrote:I managed to view the original book by using proxy in google books
As it seems, google did a typo when digitizing this book.
Solution is mate in 64 moves or less
[d]k7/8/1Q6/8/8/3pppp1/3prppp/3Kbqrb w - -
Houdini 1.5 shows mate in 26 moves.
It means that the main position:
[d]8/6pp/5p2/k7/3p4/1Q2p3/3prpp1/3Kbqrb w - -
is a mate in 18 + 26 = 44 moves.
Since ChestUCI already proved that it's (at least!) a mate in 57, it doesn't make much sense to search for any longer mate.lech wrote: But now I think it can be 55 + 26 = 81![]()

Code: Select all
[Event "Thèmes 64 (m)"]
[Site "?"]
[Date "1967.??.??"]
[Round "?"]
[White "Halumbirek=J"]
[Black "(+1333.07c1h1)"]
[Result "1-0"]
[SetUp "1"]
[FEN "8/2p5/2p5/8/p1p5/rbp5/p1p2Q2/n1K4k w - - 0 1"]
[PlyCount "55"]
[EventDate "1967.??.??"]
{Themes 64/10-12 (m): Halumbirek=J Deutsche Schachzeitung#800 6/1968} 1. Qg3 c5
2. Qf2 c6 3. Qe2 $1 Kg1 4. Qf3 Kh2 5. Qf1 Kg3 6. Qe2 Kh3 7. Qf2 Kg4 8. Qe3 Kh4
9. Qf3 Kg5 10. Qh3 Kf4 11. Qg2 Ke3 12. Qf1 Ke4 13. Qf2 Kd3 14. Qe1 Kd4 15. Qe2
Kd5 16. Qe3 Kd6 17. Qe4 Kd7 18. Qe5 Kd8 19. Qe6 Kc7 20. Qe7+ Kb8 (20... Kc8 21.
Qd6 Kb7 22. Qd8) 21. Qd7 Ka8 22. Qe8+ Kb7 23. Qd8 Ka7 24. Qc8 Kb6 25. Qd7 Ka6 (
25... Ka5 26. Qxc6) 26. Qc7 Kb5 27. Qa7 Kb4 28. Qb6# 1-0
Code: Select all
[Event "Deutsche Schachzeitung#634"]
[Site "?"]
[Date "1965.??.??"]
[Round "?"]
[White "Halumbirek=J"]
[Black "(+4660.08d1b4)"]
[Result "1-0"]
[SetUp "1"]
[FEN "8/8/8/8/1k1p3p/4pQ1p/3prppp/3Kbqrb w - - 0 1"]
[PlyCount "23"]
[EventDate "1965.??.??"]
{Deutsche Schachzeitung/4} 1. Qe4 $1 (1. Qf5 $2 d3 $1 2. Qe5 Ka3 $1) 1... Ka4
2. Qb1 $1 Ka3 3. Qc2 d3 4. Qb1 Ka4 5. Qb2 Ka5 6. Qb3 Ka6 7. Qb4 Ka7 8. Qd6 Kb7
9. Qxh2 Kb6 10. Qxh3 Ka5 11. Qxh4 Kb5 12. Qd4 1-0

Code: Select all
[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "1-0"]
[SetUp "1"]
[FEN "3Q4/8/8/8/k7/8/3p1pp1/3Kbrrb w - - 0 0"]
[PlyCount "63"]
1. Qa8+ Kb3 2. Qa1 Kb4 3. Qa2 Kb5 4. Qa3 Kb6 5. Qa4 Kb7 6. Qa5 Kb8 7. Qa6 Kc7
8. Qb5 Kc8 9. Qb6 Kd7 10. Qc5 Kd8 11. Qc6 Ke7 12. Qd5 Ke8 13. Qd6 Kf7 14. Qe5
Kf8 15. Qe6 Kg7 16. Qf5 Kh8 17. Qg5 Kh7 18. Qe5 Kg8 19. Qf6 Kh7 20. Qf8 Kg6 21.
Qe7 Kf5 22. Qd6 Ke4 23. Qc5 Kd3 24. Qb4 Ke3 25. Qc4 Kf3 26. Qd4 Kg3 27. Qe4 Kh3
28. Qe6+ Kg3 29. Qf5 Kh4 30. Qg6 Kh3 31. Qg5 Kh2 32. Qh4# 1-0