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From	Message
penelope80 26-Jul-19, 07:50	ONLY FOR SUPER EXPERTS My team mate canopus1 proposed a quiz in our team forum.Nobody could solve it but my captain cyrano. Here is it: This is the soluzion of a mate in two. Find a position that can be resolved exactly from the given solution. And only from that, of course. Attempt 1.Rb4? zugzwang, 1...Ke4 2.Qe5#, 1...Kc6 2.Bb7#, 1...N~ 2.Qd6#, defendes 1...Ne5! Solution 1.Rc3! zugzwang. 1...Ke4 2.Bb7#, 1...Kc6 2.Qd6#, 1...N~ 2.Qe5#
archduke_piccolo 26-Jul-19, 15:21	Question: Can any of these moves be captures?
penelope80 26-Jul-19, 23:24	yes, of course e.g. in the solution Qe5 mate could be also Qxe5 mate
penelope80 27-Jul-19, 04:17	ulmer-1 solved it
penelope80 04-Aug-19, 09:51	Since I don't think that someone is still working on this problem,I will wait another day or two,and then will give the solution
penelope80 11-Aug-19, 03:57	Here is the solution:
archduke_piccolo 11-Aug-19, 14:56	Forgot about this... I had a bit of a go, but didn't even come close. I think all I figured out were where the White rook and the Black King and knight went. The rest, nothing.
canopus1 07-Mar-20, 08:56	Helpmates expert? Anyone know the helpmates? Can I show you a helpmate?
penelope80 08-Mar-20, 13:27	Yes,please,it is something new,I'd like to see it
ace-of-aces 08-Mar-20, 14:19	Helpmate in 3 moves by white. Black to move first. What is a helpmate ? Black will help white in mating his black king. He is not supposed to check on ...Nc3 which will end in draw with capture of the Rook. Try to solve it yourself first. youtu.be Pal Benko created the puzzle. He wrote: The hardest known Helpmate in 3 Chess Puzzle. Grandmasters had trouble solving this within 30 minutes. How long will it take you? Remember in a helpmate puzzle, black moves first and helps white to mate him. So in this puzzle, white's third move will checkmate black.
ace-of-aces 08-Mar-20, 15:34	Another example of helpmate. Can 2 white knights mate the opponent black king? Yes, if there is help mate assist by the lone opponent king. Please study the following position.
penelope80 08-Mar-20, 15:38	And also here the black has to move first?
canopus1 08-Mar-20, 16:01	Helpmates Practically black must commit suicide. By mistake, the diagram give the move to white. Here is the solution of the second diagram, as teaching 1.Kh6 Kf8 2.Kh7 Sf6+ 3.Kh8 Sg6‡ 1.Kh6 Kf8 2.Kh7 Sf6+ 3.Kh8 Sf7‡ 1.Kh8 Kg6 2.Kg8 Sf6+ 3.Kh8 Sf7‡ Normally black moves. This diagram is only an example, since from the artistic point of view it has no value. The first diagram instead has a more interesting solution. 1.Kg7 Re4 2.Kf6 Rf4+ 3.Ke5 Sg6‡ Tomorrow I will propose a real problem. Easy, I promise.
canopus1 08-Mar-20, 16:05	I think it's better to start with a two-step helpmate, they are simpler.
ace-of-aces 08-Mar-20, 18:44	Sorry for my omission. White has to move first. 1. Nf8+ Kh8 If the black king moves to ...h6, you cannot make in 2. By moving black K to h8, he helps white to mate in the next move. 2. N5g6++
canopus1 09-Mar-20, 00:00	about this position (scheme) if White moves the solutions are: in 2,5 moves: 1…Sf6+ 2.Kh8 Sg6‡ 1…Sf8+ 2.Kh8 Seg6‡ in 3,5 moves: 1…Sd3 2.Kh6 Sf4 3.Kh7 Sf6+ 4.Kh8 Sg6‡ 1…Sd3 2.Kh6 Sf4 3.Kh7 Sf8+ 4.Kh8 S4g6‡ 1…Sd3 2.Kh6 S3e5 3.Kh7 Sf6+ 4.Kh8 Sg6‡ 1…Sd3 2.Kh6 S3e5 3.Kh7 Sf8+ 4.Kh8 Seg6‡ 1…Sf3 2.Kh6 Sh4 3.Kh7 Sf6+ 4.Kh8 Sg6‡ 1…Sf3 2.Kh6 Sh4 3.Kh7 Sf8+ 4.Kh8 Shg6‡ 1…Sf3 2.Kh6 Sde5 3.Kh7 Sg5+ 4.Kh8 Sg6‡ 1…Sc6 2.Kh6 Se7 3.Kh7 Sf6+ 4.Kh8 Sg6‡ 1…Sc6 2.Kh6 Se7 3.Kh7 Sf8+ 4.Kh8 Seg6‡ 1…Kf6 2.Kh8 Kg6 3.Kg8 Sf6+ 4.Kh8 Sf7‡ 1…Ke7 2.Kh6 Kf8 3.Kh7 Sf6+ 4.Kh8 Sg6‡ 1…Ke7 2.Kh6 Kf8 3.Kh7 Sf6+ 4.Kh8 Sf7‡ therefore I think the position is incorrect. But it's not important, it's just a pattern to explain to interested readers.
canopus1 09-Mar-20, 00:24	Real problem Now a real problem participating in one international tourney. Antonio Garofalo Best Problems 2017 helpmate in two moves black moves, two solutions. if someone can solve it, please send solutions to canopus1. Remember that the diagram, due to gameknot, is seen from the black side, so the white pawns drop down. A little help: the white pawns promote.
archduke_piccolo 09-Mar-20, 04:20	I think... ... I found one easy solution (in about half a minute), but can't yet find the other one.
canopus1 09-Mar-20, 09:39	5imon has solved it, well done. 5imon also reported an interesting and amusing variant with inverted color: 1...Re3 2. a7 c5# I'm wait for archduke...
archduke_piccolo 09-Mar-20, 13:26	OK - I didn't understand the problem correctly. Back to the drawing board. Now that I think I understand the problem correctly, I think I've found both solutions fairly quickly. Will send.
canopus1 09-Mar-20, 14:28	Archduke has solved it. Well done! Tomorrow another helpmate. Easy but more beautiful.
canopus1 10-Mar-20, 09:17	Helpmate - March 10, 2020 Here is a not difficult but more beautiful position than the previous one. Daniele Gatti, Valerio Agostini, Antonio Garofalo Sinfonie Scacchistiche 2017 Helpmate in two moves Black moves 4 solutions The diagram, as usual, is seen from the Black side. White King is in h7 square Please send solutions to canopus1 P.S. In the meantime penelope has partially solved the first problem, I wait for its second solution.
canopus1 10-Mar-20, 09:22	Position March 9. Okay, penelope also solved it correctly. Now ace-of-aces? Only him is missing.
canopus1 13-Mar-20, 09:31	Helpmate March, 10 5imon has found only one solution. Then a little help for all: the white Pg7 is in 7th square... Why not promote it?
canopus1 13-Mar-20, 15:51	Good! 5imon has solved the four solutions, while archduke_piccolo now has solved two solutions. Go Ion, I wait the other two.
archduke_piccolo 13-Mar-20, 15:59	I've found ... ... a third solution (based upon a certain speculation about the nature of this puzzle).
archduke_piccolo 13-Mar-20, 16:16	... and now the fourth... ... the speculation that guided my investigations turned out to be on the money. Fine puzzle, this. I found it a deal more difficult than the other one, mainly on account of the myriad of red herrings!
5imon 13-Mar-20, 20:44	I found the second puzzle difficult too. I found the first solution quickly but was stuck for ages before finding any more. I also noticed a pattern which helped me find the final solution quite quickly.
archduke_piccolo 13-Mar-20, 23:12	It would be interesting... ... to discover in which order we found our solutions. Maybe we can disclose that later. My sticking point was between 2nd and 3rd solutions, even though I thought (rightly) that the solutions might collectively have a certain ... erm ... pattern.
canopus1 13-Mar-20, 23:55	Well made friends. Do you want other similar puzzles?
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