Author: Rajendran Ramachandran
Date: 21:50:57 02/16/00
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On February 16, 2000 at 08:24:43, Andreas Stabel wrote: >On February 16, 2000 at 06:13:35, blass uri wrote: > >>On February 16, 2000 at 04:56:00, Andreas Stabel wrote: >> >>>On February 16, 2000 at 01:37:13, Rajendran Ramachandran wrote: >>> >>>>Hi! >>>> >>>> >>>>Position: 8;8;5K2;8;8;8;4Q3;7k white to play and mate in a maximum of twelve >>>>moves without touching white's king. >>>> >>>>To avoid any ambiguity about position, let me explain that there are ONLY three >>>>pieces on the board! >>>> >>>>White King on f6 >>>>White Queen on e2 >>>>Black King on h1 >>>> >>>> >>>>The only condition is White's king is untouchable.....meaning that you are not >>>>allowed to move it! You are allowed to take help from any chess program except >>>>Hiarcs. >>>> >>>>I am sure you will enjoy this and show this to your friends as well! Above all >>>>it is very hard to forget this as it is so simple to understand and remember but >>>>difficult to solve! >>>> >>>>I have not created this one but if my memory serves me right, this problem was >>>>created by a computer of stone age!!! >>>> >>>>Thanks. >>>> >>>>raj >>> >>>I seem to have found a solution with max. 9 moves: >>>1. Qf3 Kh2 2. Qf1 Kg3 3. Qe2 >>> 3... Kh4 4. Qg2 Kh5 5. Qg5# >>> 3... Kh3 4. Qf2 Kg4 5. Qe3 >>> 5... Kh5 6. Qg3 Kh6 7. Qg6# >>> 5... Kh4 6. Qg5+ Kh3 7. Qg1 Kh4 8. Qg2 Kh5 9. Qg5# >>> 3... Kf4 4. Qd3 Kg4 5. Qe3 >>> 5... Kh5 6. Qg3 Kh6 7. Qg6# >>> 5... Kh4 6. Qg5+ Kh3 7. Qg1 Kh4 8. Qg2 Kh5 9. Qg5# >>> >>>Regards >>>Andreas Stabel >> >>You ignore the possibility 1.Qf3 Kg1 >> >>This position is not hard to solve. >>You only have to analyze all the possible positions of white queen and black >>king and find all the mate in 1 positions, all the mate in 2 positions... >> >>This is the way computers generate tablebases but in this case the size of the >>tablebases is small enough so humans with enough time can solve it >> >>Uri > >After correcting the position from having the king on g1 to the correct h1 >I come up with the following solution: > ***************************************************************** >Part 1: >1. Qg4 Kh2 2. Qe4 > 2... Kg1 3. Qf3 and we're into part 2 (mate in max. 11) > 2... Kg3 3. Qe2 and we're into part 2 (mate in max. 9) > 2... Kh3 3. Qf3+ > 3... Kh4 4. Qg2 Kh5 5. Qg5# > 3... Kh2 4. Qf1 Kg3 and we're into part 2 (mate in max. 11) > >Part 2: >1. Qf3 Kh2 2. Qf1 Kg3 3. Qe2 > 3... Kh4 4. Qg2 Kh5 5. Qg5# > 3... Kh3 4. Qf2 Kg4 5. Qe3 > 5... Kh5 6. Qg3 Kh6 7. Qg6# > 5... Kh4 6. Qg5+ Kh3 7. Qg1 Kh4 8. Qg2 Kh5 9. Qg5# > 3... Kf4 4. Qd3 Kg4 5. Qe3 > 5... Kh5 6. Qg3 Kh6 7. Qg6# > 5... Kh4 6. Qg5+ Kh3 7. Qg1 Kh4 8. Qg2 Kh5 9. Qg5# > >Which seem to always give a mate in 11 or less. > >Regards >Andreas Stabel ********************************************************************* Well done Andreas!! Hope you enjoyed it!
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