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Title: Arimaa puzzles Post by UruramTururam on Jul 4th, 2007, 6:51am Hello all, I am Ururam Tururam and I'm pretty new here. You can guess I like the game of Arimaa (hey, if I didn't why should I be here?). Now I learn to play (being beaten by bots now and then) and try solve the Arimaa puzzles published on the rules sub-page. I've even tried to make a simple puzzle myself. Here it goes: - d H - - - r r - c E h - - r R R m x e - x r D R d r - R - - - - C - - - R - - - - x - - x - - - r M - - r - - - - - - c R - - (I hope the diagram is readable...) Gold to move, all 4 moves remain. We assume optimal moves are made. Who is going to win (and how)? Well that's it. LMK if you like it at all... |
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Title: Re: Arimaa puzzles Post by RonWeasley on Jul 4th, 2007, 7:40am I like puzzles, including this one. Thanx! I spent some time looking at the imminent goal threats from the silver rabbits on the second rank. But the solution is elsewhere. |
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Title: Re: Arimaa puzzles Post by Fritzlein on Jul 4th, 2007, 9:26am Thank you for that fine puzzle! Have you seen the puzzles on the Arimaa Wiki (http://arimaa.com/arimaa/twiki/bin/view/Arimaa/ArimaaPuzzles)? If you don't mind, I will add your puzzle to the collection. |
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Title: Re: Arimaa puzzles Post by UruramTururam on Jul 4th, 2007, 2:30pm Thanks Fritzlein. You can surely add it if you think it's OK (I think so but it's obvious). Btw the wiki puzzle creator is a nice tool, I'll use it next time. In fact creating a new puzzle category "who is going to win" may be a good idea if I manage to create a few more riddles like this one... |
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Title: Re: Arimaa puzzles Post by Fritzlein on Jul 4th, 2007, 8:16pm I have added your puzzle to the Twiki. It is quite nice, because Gold has rabbits left, right, and center, so it isn't clear where one's attention should be focused. Also it seems at first that Gold might be able to defend, although it isn't the case. Finally, the solving move is not obvious, for a one-mover. I'm impressed at such a good puzzle on your first try. I put it in a new Who Will Win? section. It is good practice to have have puzzles like "capture a piece in two" or "goal in three", but such puzzles give the solver an unfair advantage of knowing what has to be done. In actual games nobody is kind enough to tell you that you have a forced goal in two moves, so you have to look for the best move without knowing what form it will take. I hope someday there will also be some puzzles of the form "What is the best move?", where you don't know if either side can force goal, capture material, or what. Rather than trying to figure out who is winning, you just have to find the best move, exactly as in a real game. |
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Title: Re: Arimaa puzzles Post by UruramTururam on Jul 5th, 2007, 4:27am Oh, silly me... :-/ I've checked an email today first and found a letter from Omar encouraging me to use the form he linked to enter the puzzle. I did it... and realized that there is already one. So now we have two identical ones on the puzzles subpage. I've written back to Omar that such a mistake has occurred so be careful when deleting the additional one not to let them both disappear. Sorry for the mess. (I'm going back to challenge Clueless2006P1 - I'm still unable to beat it. Perhaps I'm even more clueless. Like in Chess where I was quite a poor player but quite a good problem composer.) |
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Title: Re: Arimaa puzzles Post by mdk on Jul 5th, 2007, 10:17am Thanks for the new puzzle. It's very good for a 1 move puzzle especially for a first puzzle. If you are having trouble beating clueless you might want to read some of the strategy articles on the wiki or go back through some old games of some of the best players against this bot and others. |
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Title: Re: Arimaa puzzles Post by Fritzlein on Jul 5th, 2007, 10:56am on 07/05/07 at 04:27:45, UruramTururam wrote:
Not a problem. I just changed the link from the Wiki page to be p23 instead of p22, so it is your incarnation of the puzzle that is linked instead of mine. I think deleting p22 is more trouble than it's worth; we can just let it languish unlinked. |
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Title: Re: Arimaa puzzles Post by UruramTururam on Jul 5th, 2007, 2:16pm on 07/05/07 at 10:17:49, mdk wrote:
That's what I do. :) I think it will take me some time but I have no need to hurry... on 07/05/07 at 10:56:45, Fritzlein wrote:
There is still a doublet here: http://arimaa.com/arimaa/puzzles/list.cgi but I hope Omar will take care of this... Meanwhile I've made another one. But this time I am not sure myself if I covered all the possibilities. The theme is as before - who is going to win this game in a forced way. Yet now I'd like it to be discussed here before I post it on the puzzles page: maybe I was wrong somewhere in this composition. Position notation: Ra5 Ra6 Rb5 Cb8 Cc2 Ec5 Rc6 Mc7 Re2 Df1 Rg2 Hg5 Dh3 ea7 rb2 rb6 rb7 rc4 hc8 rd2 md5 dd7 ce1 rf2 hf3 df5 rg6 ch2 rh4 Diagram: - C h - - - - - e r M d - - - - R r R - - x r - R R E m - d H - - - r - - - - r - - x - - h - D - r C r R r R c - - - - c D - - Description: Gold tried to corner silver elephant and almost succeeded to do that sacrificing a horse and two rabbits. Silver (still having all the pieces!) launched a massive counterattack having now a number of rabbits a step from the goal. If it were silver turn - they would win by simple cf3w ce3w re2s. But now it's gold turn. Who will win? (And no, now it is not a one-move puzzle!) |
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Title: Re: Arimaa puzzles Post by mdk on Jul 5th, 2007, 3:50pm well my first thought for this new puzzle is: 2w Df1e rf2s hf3x rf1n Dg1w the first response i can come up with is: 2b ea7n rb7w Cb8s ea8e anything else seems to allow gold to slowly pick off pieces while silver's pieces remain trapped in the corner and gold would continue on to win. With this move however the position seems more complex. I still believe that gold can force a win, however, I am actually not sure. Perhaps you did not see my 2b or perhaps I have the wrong 2w. Or perhaps there is some line after these moves that I am missing. The only other response I could come up with is: 2w rc4s rc3x Ec5s Ec4e Ed4s. This as well seems to stop an immediate goal and I believe also would allow gold to eventually win with proper play. Based on the composition of the puzzle, however, I believe that my initial suggestion is the intended one. I think my lack of sleep after staying up until 4am with friends for the 4th of july and then waking up at 7am this morning is preventing me from seeing things clearly. Thanks again for another interesting puzzle though. |
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Title: Re: Arimaa puzzles Post by UruramTururam on Jul 5th, 2007, 4:23pm OK, so there is something I overlooked. I was nearly sure about this as this position is quite complex. Of course, the initial move should be as suggested, yet I have to tune the rest. The position in the NW corner is quite hard to setup properly... |
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Title: Re: Arimaa puzzles Post by mdk on Jul 5th, 2007, 9:29pm yeah at first i didnt think the elephant was going to be able to escape but then i played around with it some and realized that it could. |
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Title: Re: Arimaa puzzles Post by UruramTururam on Jul 10th, 2007, 8:05am Ok, I've made a few changes. This is how the puzzle looks now: - r r D c - - - e R M h - - - - R r R - - x - - C R E m - - - - r - r - - - - d - - x - - h - H - r C r R r R d - - - - c D - - Notation: Ec5 Mc7 Hh3 Dd8 Df1 Ca5 Cc2 Ra6 Rb5 Rb7 Rc6 Re2 Rg2 ea7 md5 hd7 hf3 dh2 dh4 ce1 ce8 ra4 rb2 rb6 rb8 rc4 rc8 rd2 rf2 I hope it's now better. After obvious horse capture silver should be doomed. Or is there a way silver can avoid immobilizing (or goal on a8)?... |
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Title: Re: Arimaa puzzles Post by mdk on Jul 10th, 2007, 10:14am This looks to be right now. Either goal in 3 or immobilization in 2, depending on silver's move. |
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Title: Re: Arimaa puzzles Post by Fritzlein on Jul 30th, 2007, 4:46pm This is a very cute puzzle. I know that the rules say the game continues if an opposing rabbit is dislodged onto and off of the goal line, but this has always seemed like a rule that exists for completeness sake, and not because anyone would ever make such a move. It is amusing to have a position in which the only winning move brings an opposing rabbit temporarily to goal. UruramTururam, I hope your composition of Arimaa puzzles doesn't end with this one! |
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Title: Re: Arimaa puzzles Post by UruramTururam on Aug 11th, 2007, 5:02pm Thanks. I try to compose a nontrivial "goal in two" puzzle (Omar encouraged me to do that). Now as I'm back from my holidays I'll continue working on it. Two first attempt were in vain, but I hope to finally compose something interesting. |
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Title: Re: Arimaa puzzles Post by UruramTururam on Aug 22nd, 2007, 4:11pm I've composed a new puzzle. As usual there is (at least there should be) a forced goal for one of the players. I'd like you to check it before I post it to the puzzles page... Gold to move. The setup: Ed8 Mb7 Db5 Cd6 Cf7 Rf5 Rg5 Rh4 Rh5 Rh7 eh6 mc8 hc7 hf8 da7 db6 cb8 cc5 ra5 rb4 rd7 re5 re7 rf6 rg6 rg7 -cmE-h-- dMhrrCrR -dxC-rre rDc-rRRR -r------R --x--x-- -------- -------- As you can see gold performed a swarm attack losing 6 pieces and capturing none... Many thanks to The_Jeh for providing the idea! |
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Title: Re: Arimaa puzzles Post by Fritzlein on Aug 22nd, 2007, 4:40pm Hmmm, the diagram has a suspicious-looking gold rabbit on j4... but I see from your notation where it really is. ;-) |
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Title: Re: Arimaa puzzles Post by Janzert on Aug 22nd, 2007, 4:49pm In other news Fritzlein completes his sorting algorithm to move his last name one closer to the beginning of the alphabet. Janzert (Hey wait that effects me too) |
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Title: Re: Arimaa puzzles Post by Fritzlein on Aug 22nd, 2007, 4:52pm Very nice. It took me about ten minutes to get it. If I am not mistaken Gold has only one move that wins. Incidentally, doesn't the side to move give away who is going to win? Because if the side to move loses, then there is no key move, and all moves are equally bad. |
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Title: Re: Arimaa puzzles Post by UruramTururam on Aug 22nd, 2007, 5:04pm Oh well... If the opposing side is to win the challenge is to find an answer to every possible move performed by the first player. |
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Title: Re: Arimaa puzzles Post by RonWeasley on Aug 24th, 2007, 6:55am I liked this one. It took a bit of time especially without using the board viewer (what was that spell?). I think it's normal to indicate who has the move. Otherwise, if the mover loses, you could back up one move and make the puzzle even harder (better). I can't think how you could force silver into a position like this, although I could imagine doing this by accident. |
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Title: Re: Arimaa puzzles Post by camelback on Sep 17th, 2007, 10:55pm I've created a "win in 4 moves" puzzle http://arimaa.com/arimaa/twiki/bin/view/Arimaa/WinPuzzles4Moves Puzzle is for first 2 moves only, different solutions exist for last 2 moves or goal in less than 4 moves. If you find goal in less than 4 moves, try to extend the game for 4 moves. Let me know if I have any loose ends. |
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Title: Re: Arimaa puzzles Post by Fritzlein on Sep 17th, 2007, 11:26pm That was a fun puzzle! I solved it in about 15 minutes. My solution had the same first move as yours, but a different second move. I'll tell you if you ask, but first I'll leave it as a puzzle for you. I verified with Bomb that my second move also forces goal in four moves. I was curious if Bomb could solve the original position, because I don't think I have ever seen it find forced goal in four before. Bomb settled on the correct first move for Silver in only one second, realizing that Gold had only one response and expecting therefore to win a rabbit on the second move. After seventy seconds, Bomb announced the goal in four moves (28 steps). I am amazed it could search so deeply, but I guess the lure of material gain got Bomb on the right track, and the reduced material helped cut down the branching factor. Composing a win in four with a unique key is no easy task. Well done, camelback! |
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Title: Re: Arimaa puzzles Post by OLTI on Sep 18th, 2007, 6:40am I found 2 second moves that works although they have the same idea. |
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Title: Re: Arimaa puzzles Post by RonWeasley on Sep 18th, 2007, 8:13am I liked the puzzle. More please. |
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Title: Re: Arimaa puzzles Post by Fritzlein on Sep 18th, 2007, 10:35pm I added another. This one shouldn't be too hard, as it is only goal in two, not goal in four like camelback's. http://arimaa.com/arimaa/puzzles/show.cgi?p=p31 Please let me know if the solution is not unique. |
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Title: Re: Arimaa puzzles Post by RonWeasley on Sep 19th, 2007, 7:57am Thanx for the puzzle, Fritzlein. This looks like a BvB game. |
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Title: Re: Arimaa puzzles Post by jdb on Sep 19th, 2007, 8:40am Is there a link to the puzzle page somewhere? I didn't know about it. |
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Title: Re: Arimaa puzzles Post by Fritzlein on Sep 19th, 2007, 12:05pm on 09/19/07 at 07:57:59, RonWeasley wrote:
Bot versus Belbo? |
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Title: Re: Arimaa puzzles Post by Fritzlein on Sep 19th, 2007, 12:11pm on 09/19/07 at 08:40:01, jdb wrote:
All puzzles are listed here http://arimaa.com/arimaa/puzzles/list.cgi but I prefer to access them via the Wiki where they can be linked with better descriptions. http://arimaa.com/arimaa/twiki/bin/view/Arimaa/ArimaaPuzzles The Wiki puzzle page also links to the puzzle maker form, which takes a puzzle as input and adds it to the permanent collection. |
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Title: Re: Arimaa puzzles Post by arimaa_master on Sep 19th, 2007, 3:10pm on 09/18/07 at 22:35:25, Fritzlein wrote:
Very nice puzzle - it took me about 10 minutes to find (mainly because I was trying to check it's uniqueness - so now I think that it is unique /although you can check it with bomb, don´t you?/ although your final move takes four steps whereas it could be used only 3-step move). |
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Title: Re: Arimaa puzzles Post by Fritzlein on Sep 19th, 2007, 3:41pm Ah, I didn't notice the 3-step conclusion, thanks. No, I can't verify uniqueness with Bomb. If I have a different move to suggest to Bomb, it will indeed verify that it is or isn't another solution, but how do I know I have suggested all of the possibilities? Bomb stops thinking after it finds any winning move; I can't ask it for all winning moves. Now, here is my secret. I only looked at game 6040 because it is in this list Omar is building: http://arimaa.com/arimaa/games/puzzles.txt Omar is having BombP2 look at historical games to see if anyone missed a goal. The fields are gameid, winning move, and (for the later records) number of steps to goal. Most of the games are useless for puzzles, because the winning move is not unique, or because the winning move is too obvious, or because it was a human player toying with a bot instead of winning as quickly as possible. However, I found the puzzle I posted from Belbo's game on about the tenth game I looked at, so I expect that looking further would uncover some hidden gems. |
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Title: Re: Arimaa puzzles Post by camelback on Sep 19th, 2007, 6:35pm on 09/17/07 at 23:26:18, Fritzlein wrote:
Thanks Fritzlein, Can you verify whether your second move is the one below? I think any other second move will finish the game sooner. 1b eb3s Ma2s eb2w ra3e 2w Ee4s Ee3w Ed3s Ed2w 2b dc5e dd5w Re5w ea2e 3w Rb1e Ma1n Rc1e Rd1e 3b re6s re5s re4s re3s 4w Ec2e Ed2w re2w Re1n 4b dc5s dc4e dd4s rd2s |
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Title: Re: Arimaa puzzles Post by Fritzlein on Sep 19th, 2007, 8:34pm I had the same 2w, but a different 2b. What I meant in my previous comment is that while we agree on 1b and 2w, my different choice of 2b also forces goal on 4b. |
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Title: Re: Arimaa puzzles Post by arimaa_master on Sep 19th, 2007, 11:48pm on 09/19/07 at 15:41:55, Fritzlein wrote:
Ohh, I see. I thought that it is possible to list all moves with their evaluations (sorted from the best to the worst) - or at least find all possible goals (with bomb) but obviously it is not possible :). |
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Title: Re: Arimaa puzzles Post by Fritzlein on Oct 20th, 2007, 11:31am I added a cute two-mover. http://arimaa.com/arimaa/puzzles/show.cgi?p=p32 It's not too hard if you know it is there, but I totally missed it in analysis. |
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Title: Re: Arimaa puzzles Post by camelback on Oct 20th, 2007, 4:31pm Fritz, How about rg8w rh8w ra5e rb5s ? Does it hold water? |
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Title: Re: Arimaa puzzles Post by Fritzlein on Oct 20th, 2007, 5:06pm on 10/20/07 at 16:31:46, camelback wrote:
That might win eventually, but it is not goal in two, because the a1-rabbit can move to b3 on defense. |
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Title: Re: Arimaa puzzles Post by camelback on Oct 20th, 2007, 9:41pm Ya.. later I realized even phant can come back and freeze the rabbit. my bad ;D |
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Title: Re: Arimaa puzzles Post by Fritzlein on Oct 24th, 2007, 5:40pm http://arimaa.com/arimaa/puzzles/show.cgi?p=p33 Yet another goal in two. Again, not too hard, but the answer is cute. I didn't find it in the actual game, although I had about three minutes on my clock. As usual, please let me know if the answer is not unique. |
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Title: Re: Arimaa puzzles Post by arimaa_master on Oct 26th, 2007, 6:55am Nice one, I find it in about 30 sec, however if I didn´t know that there is goal in two (like in real game) I think I couldn´t be able to find it. |
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Title: Re: Arimaa puzzles Post by chessandgo on Oct 27th, 2007, 4:32am on 10/20/07 at 11:31:54, Fritzlein wrote:
Very nice one, Karl. I'll try to keep this one-step goal blocking pattern in mind, it's quite hard to spot to my eyes. |
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Title: Re: Arimaa puzzles Post by camelback on Nov 2nd, 2007, 9:20pm I have added a goal in 3 moves puzzle here http://arimaa.com/arimaa/puzzles/show.cgi?p=p34 All credit goes to bomb ;D |
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Title: Re: Arimaa puzzles Post by Fritzlein on Nov 5th, 2007, 9:24am Fascinating puzzle. I solved it in about 20 minutes. However, I found a completely different solution! When I saw your solution I pulled out Bomb and verified that my move also forces goal in three. Shall I tell you, or would you like to try to find it yourself? |
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Title: Re: Arimaa puzzles Post by RonWeasley on Nov 5th, 2007, 9:58am I think I found a different one too. I don't have a a working Bomb to help, so I might be wrong. Mine involves protecting with a r on b7 as the first move, then doing something tricky with the e. Similar to yours, Fritzlein? |
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Title: Re: Arimaa puzzles Post by Fritzlein on Nov 5th, 2007, 10:48am Yes, Ron, my key move was rabbit from f7 to b7, just like yours. I wonder, given that there are two vastly different key moves that both work, whether there might actually be three or more. Camelback's move is of course more glorious, because it appears so suicidal to rotate the gold dog into Gold's goal attack. You could argue that the given solution is the best. Still, it undermines the beauty of a puzzle when you think about it creatively and actually solve it correctly, but then when you click on "answer" you don't get a confirmation of your correct solution. |
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Title: Re: Arimaa puzzles Post by camelback on Nov 5th, 2007, 11:09am Oops!!! I overlooked that option, I should have killed that f7 rabbit in the first place for the puzzle, to avoid this confusion >:( Thanks for posting it, is it possible to edit the puzzle or remove and create a new one? |
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Title: Re: Arimaa puzzles Post by Fritzlein on Nov 5th, 2007, 11:10am I don't think it is possible to edit the puzzle, or to delete the old one. Instead you have to create a new one and ask Omar to delete the old one. But now that I have seen the intended solution, I am worried. What about flipping the dog to c5 instead of b6? Is that also a solution? |
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Title: Re: Arimaa puzzles Post by camelback on Nov 5th, 2007, 11:47am Ok, I have created a new one #35 and asked Omar to delete the old one. http://arimaa.com/arimaa/puzzles/show.cgi?p=p35 Sorry Fritzlein you have to erase the solution from your mind ;) I think if dog goes to c5, gold is capable of doing much damage :-/ |
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Title: Re: Arimaa puzzles Post by Fritzlein on Nov 8th, 2007, 8:36am You are right, the flipping the dog to c5 doesn't work, because then the silver elephant must still defend the goal with one step. Flipping the dog to b6 actually provides a bit of goal defense (in a strange way) because it is in the path of the a6 rabbit. This counter-intuitive necessity makes this a fantastic puzzle. Thank you for adding it to the wiki! Interestingly, on my slow computer, Bomb would not find the right move in tournament time controls. Until it had thought for four minutes, it wanted to flip the dog to b6. After 4:06 it found the correct move, and 8:03 it announced the mate. Apparently goal in three is the outer edge of tactical competence even for computers at the moment. |
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Title: Re: Arimaa puzzles Post by camelback on Nov 15th, 2007, 8:41pm I think I have a new puzzle from my current postal game. :) http://arimaa.com/arimaa/java/ys/ms4/v5/f1_sit.pl?sid=2654946766&grid=3 Silver wins in 3 moves or less.. I was wondering if it makes a good puzzle? ;D |
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Title: Re: Arimaa puzzles Post by chessandgo on Nov 16th, 2007, 3:22am hmmmmm wait .... I am currently playing a postal against this guy ... He is holding silver indeed ... d**n , did I miss a forced win for him ? Let me load the game ... hmmm, 14d etc, this is our time setting indeed. God, I'm lost ! Ah wait, this is another game ... such a relief ! :) Camelback, you're playing with my nerves ! Add this to deconcentrating me in the game chat by introducing me to new esoteric english words, I stand no chance against you ;) |
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Title: Re: Arimaa puzzles Post by Fritzlein on Nov 17th, 2007, 11:12am on 11/15/07 at 20:41:46, camelback wrote:
I don't think it makes a good puzzle, but I can't tell you why until after your move. Unless you are fishing for advice about what move you should make next? ;-) |
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Title: Re: Arimaa puzzles Post by camelback on Nov 17th, 2007, 1:58pm on 11/16/07 at 03:22:37, chessandgo wrote:
O..Oh.. I didn't realize I would scare "chessandgo" ;). I really thought by playing chessandgo I can learn to compose mate in 7 or 8 moves puzzles, what a bummer :P At least this post have made other folks playing silver with me, think they are going to win sooner ;D on 11/16/07 at 03:22:37, chessandgo wrote:
I should work more on this strategy :) My English is not native, it may be from colonial era. It's all because Joseph François Dupleix (http://en.wikipedia.org/wiki/Joseph_Fran%C3%A7ois_Dupleix) fell behind Robert Clive (http://en.wikipedia.org/wiki/Robert_Clive) that prevented my French esotericity. ;D |
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Title: Re: Arimaa puzzles Post by camelback on Nov 17th, 2007, 2:06pm on 11/17/07 at 11:12:24, Fritzlein wrote:
Hmm.. I break my head trying to find a defense that extends beyond 3 moves but couldn't find any ??? :( . Looks like Soter also can't find any. So can you please tell me why? I will make modifications accordingly that will puzzlize this position ;D |
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Title: Re: Arimaa puzzles Post by Fritzlein on Nov 17th, 2007, 5:48pm One reason this puzzle isn't as good as your previous puzzle is that the first move I thought to try actually solves the puzzle. The east wing of Gold is totally empty, so it seems obvious to push a rabbit up four steps on that side. Of course this is only a matter of taste, but when the question is how to make a goal, it's more fun if the answer is not, "Run a rabbit straight ahead as fast as possible where there are no defenders." Contrast this with your previous puzzle where the only winning move appears at first glance to be suicidal, and it takes great creativity to hit upon it. The other flaw with this puzzle is that the solution isn't unique. Silver has such an overwhelmingly strong position that we can expect there is more than one way to meet the challenge. It turns out there is. Bomb verifies for me that the following three moves are all goal in three: 58w rf8s rf7s rf6s rf5s 58w rf8s rf7s rf6s hf2w 58w rf8s rf7s hf2w he2w For your last puzzle it was easy to remove the alternate solution by killing the defensive rabbit, but I am not sure how to tweak this one. For example, moving the c2 cat to c1 doesn't help; the first two moves still both force goal in three. I hope I am not discouraging you from submitting puzzles. It is difficult to find a position where one side is strong enough to force goal, but not strong enough to do so in more than one way, especially where the one way is not obvious. I have been spoiled by the high quality of your previous puzzles, so now I expect the world! |
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Title: Re: Arimaa puzzles Post by camelback on Nov 17th, 2007, 6:42pm Thanks for the comments. It is very true. This is not a high quality puzzle. I'm aware that there are other defense and hence not unique. The reason for posting this one is to expose the danger of getting elephant far away. 8) I'm working on different puzzles now. So hopefully I will come up with a high quality one soon. :) Thank you for having high expectations on me ;D |
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Title: Re: Arimaa puzzles Post by camelback on Nov 28th, 2007, 3:12am ok.. At last a 2 mover (for silver). May be its very easy but its really hard to create one :( Interesting note is bomb announced goal in 3 moves but actually its goal in 2 :) Let me know if this qualifies to go to puzzle page.
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Title: Re: Arimaa puzzles Post by RonWeasley on Nov 28th, 2007, 7:28am Unless I see this wrong, and it makes it a good puzzle if I do, silver can win beginning with a two step move. Rf2w hf3s. If this is right, it could be a better puzzle if the last two steps were forced, ideally to stop multiple defense replies. As it stands, having two free steps makes it less of a puzzle since the solution is not unique. I would use rc3e ec4e just to bog down the E. And we all believe you when you say how hard it is to create these! Anybody see a defense to my move? |
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Title: Re: Arimaa puzzles Post by Fritzlein on Nov 28th, 2007, 6:51pm on 11/28/07 at 07:28:11, RonWeasley wrote:
I can't find a defense to your two-step key. Of course, since I was warned that Bomb thinks this is goal in three, I analyzed in my own head, so if I'm right it is by accident. |
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Title: Re: Arimaa puzzles Post by Fritzlein on Jan 30th, 2008, 3:21pm In terms of creating interesting puzzles, real life is definitely still outstripping art. Here's a great one from the first game of World Championship round 4. http://arimaa.com/arimaa/puzzles/show.cgi?p=p36 |
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