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 February puzzel-Red Cross tribute 
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Posted on: Wed Feb 01, 2012 11:27 pm




Posts: 65
Joined: Fri May 13, 2011 9:37 am
Post February puzzel-Red Cross tribute
As requested I am proud to present to you a puzzle, tribute to the International Red Cross.
I selected the easiest one out of a series of this particular mosaic.

(edit by Patrick: download a PDF version from this link)

Tomorrow I will present the hardest one found, especially for CLM.
Image
By [url=http://www.calcudoku.org/im/forum/img_f16_t150_p1302_i2.png]klaas1952[/url] at 2012-02-01

Enjoy this puzzle!

For your ease, the description of this puzzle :
16
11,+,a1a2
1512,x,b1c1d1
1,e1
728,x,f1e2f2g2
28,+,g1h1h2i2
672,x,i1j1j2
8,k1
30,x,l1l2
26,+,m1n1
23,+,o1p1
12,b2
36,+,c2b3c3d3c4
10,d2
9,x,k2k3
5,m2
2016,x,n2m3n3o3n4
11,o2
16,+,p2p3p4
48,x,a3a4
70,x,e3f3
9,g3
29,+,h3i3
15,j3
40,x,l3l4
5,b4
8,d4
2160,x,e4f4g4
29,+,h4i4h5
364,x,j4k4j5k5
11,m4
1,o4
26,+,a5b5
65,x,c5d5
40,+,e5f5f6
112,x,g5g6
11,+,i5i6
33,x,l5k6l6
192,x,m5m6m7
24,+,n5n6
4,p5
2,a6
4,x,b6c6
12740,x,d6e6d7e7
10,h6
54,x,j6j7
32400,x,o5o6p6o7
21,+,a7b7a8
12,c7
6,x,f7g7
1716,x,h7g8h8
448,x,i7i8j8
23,+,k7l7
9,n7
31,+,p7o8p8o9
2640,x,b8a9b9a10
11,+,c8c9
18,x,d8d9e9
18,x,e8f8
15,k8
693,x,l8m8m9
80,x,n8n9
10,f9
990,x,g9h9h10
936,x,i9j9i10
20,x,k9l9
48,x,p9o10p10
43,+,b10a11b11b12
5,c10
30,+,d10d11d12
84,x,e10f10
17,+,g10g11
39,x,j10k10
15120,x,l10m10l11m11
2,n10
30,x,c11c12
308,x,e11f11e12
40,x,h11h12
1,i11
35,x,j11j12
36,+,k11k12l12
96,x,n11o11
2,p11
3,a12
18,+,f12g12f13g13
220,x,i12h13i13
27,+,m12n12
117,x,o12p12
1260,x,a13a14a15
7,b13
44,+,c13b14c14d14c15
4,d13
20,+,e13e14
1560,x,j13k13l13
1,m13
42,+,n13m14n14o14n15
3,o13
30,+,p13p14
99,x,f14f15
3,g14
105,x,h14i14
12,j14
18,+,k14l14
3,b15
6,d15
64,x,e15e16
1620,x,g15g16h16
28,x,h15i15i16j16
2310,x,j15k15l15k16
2,m15
12,o15
19,+,p15p16
22,+,a16b16
150,x,c16d16
2,f16
6,l16
25,+,m16n16o16


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Posted on: Thu Feb 02, 2012 11:57 am




Posts: 246
Location: Lisbon, Portugal
Joined: Sun Sep 18, 2011 5:40 pm
Post Re: February puzzel-Red Cross tribute
Hi Nicow.

Thank you very much for the 16x16 puzzle of February. Only a suggestion: the values of the cages must be, in my opinion, better placed ( as the New Year puzzle ), not occupying the whole cell.
And the solution of that puzzle you said put it in the end of January?
I'm a little distant from the " high competition " on account of my troubles with the site, but it is always welcome such puzzles. If the 9x9 puzzle is the mother of all puzzles, the 12x12 is the father and the 16x16 the grandfather.

_________________
Visit http://www.calcudoku.org the most interesting and addictive site of puzzles.


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Posted on: Thu Feb 02, 2012 3:42 pm




Posts: 2192
Joined: Thu May 12, 2011 11:58 pm
Post Re: February puzzel-Red Cross tribute
looks fantastic!

I'll run it through my visualizer and create a cleaner version...

FYI, my solver rates this puzzle as being fairly easy (single solution found,
all options tried, in 0.33 sec (!))


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Posted on: Thu Feb 02, 2012 3:51 pm




Posts: 65
Joined: Fri May 13, 2011 9:37 am
Post Re: February puzzel-Red Cross tribute
It's OK to maximise visibility, Patrick!

Especially for CLM the hardest puzzle in this series:
Image

Uploaded with [url=http://www.calcudoku.org/im/forum/img_f16_t150_p1305_i2.png]ImageShack.us[/url]

Note: these puzzles have only one solution. There is no need for searching: only logic will do.
Enjoy!


Plus the description of this very difficult puzzle:
16
20,+,a1a2
35,+,b1c1d1
13,e1
630,x,f1e2f2g2
48,+,g1h1h2i2
550,x,i1j1j2
3,k1
128,x,l1l2
10,+,m1n1
9,+,o1p1
6,b2
69888,x,c2b3c3d3c4
8,d2
4,x,k2k3
14,m2
58,+,n2m3n3o3n4
13,o2
11,+,p2p3p4
15,+,a3a4
10,+,e3f3
10,g3
165,x,h3i3
7,j3
7,+,l3l4
11,b4
6,d4
600,x,e4f4g4
70,x,h4i4h5
1620,x,j4k4j5k5
16,m4
14,o4
16,x,a5b5
143,x,c5d5
280,x,e5f5f6
5,+,g5g6
33,x,i5i6
15,+,l5k6l6
104,x,m5m6m7
14,+,n5n6
34560,x,o5o6p6o7
14,p5
12,a6
18,x,b6c6
1680,x,d6e6d7e7
8,h6
36,x,j6j7
910,x,a7b7a8
3,c7
77,x,f7g7
660,x,h7g8h8
390,x,i7i8j8
16,x,k7l7
14,n7
2880,x,p7o8p8o9
31,+,b8a9b9a10
9,+,c8c9
17,+,d8d9e9
19,+,e8f8
15,k8
840,x,l8m8m9
22,x,n8n9
15,f9
126,x,g9h9h10
128,x,i9j9i10
140,x,k9l9
715,x,p9o10p10
130,x,b10a11b11b12
16,c10
180,x,d10d11d12
104,x,e10f10
18,x,g10g11
17,+,j10k10
32,+,l10m10l11m11
10,n10
70,x,c11c12
28,+,e11f11e12
224,x,h11h12
9,i11
80,x,j11j12
1144,x,k11k12l12
48,x,n11o11
15,p11
15,a12
1872,x,f12g12f13g13
252,x,i12h13i13
9,+,m12n12
28,x,o12p12
1344,x,a13a14a15
15,b13
41,+,c13b14c14d14c15
14,d13
8,x,e13e14
27,+,j13k13l13
11,m13
25,+,n13m14n14o14n15
1,o13
90,x,p13p14
168,x,f14f15
15,g14
7,+,h14i14
13,j14
77,x,k14l14
4,b15
7,d15
22,+,e15e16
41,+,g15g16h16
1792,x,h15i15i16j16
36,+,j15k15l15k16
5,m15
11,o15
9,+,p15p16
10,+,a16b16
55,x,c16d16
9,f16
2,l16
600,x,m16n16o16


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Posted on: Thu Feb 02, 2012 3:58 pm




Posts: 2192
Joined: Thu May 12, 2011 11:58 pm
Post Re: February puzzel-Red Cross tribute
pnm wrote:
I'll run it through my visualizer and create a cleaner version...

I turned it into a nice PDF, download it here:

16x16 red cross puzzle


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Posted on: Thu Feb 02, 2012 4:28 pm




Posts: 690
Joined: Fri May 13, 2011 6:51 pm
Post Re: February puzzel-Red Cross tribute
nicow wrote:
As requested I am proud to present to you a puzzle, tribute to the International Red Cross.
I selected the easiest one out of a series of this particular mosaic.
...
Tomorrow I will present the hardest one found, especially for CLM.


Very gentle, thank you very much, and thanks for the new puzzle; of course I will try solving this (it looks doable) and any other you provide in the future (I encourage you to continue with this generation though I know the work that it represents, only preparing and correcting the attached code takes a lot of time), I enjoy a lot solving calcudokus (some times even driving, not looking to the printout of course [smile] but "mentally" like in the "blind games" in chess). As soon as I have the solution I will give you my comments on this International Red Cross puzzle (today perhaps I will be a little busy but I hope to advance it tomorrow).

P.D.: I am thinking in the possibility of generating calcudokus without any individual cell, in other words, giving the necessary individual numbers, shown in big characters inside the cages, I have never seen anywhere this type of presentation (kenken, nytimes, giuliozambon, 321monkey, etc.) but I think it could be another aspect of the calcudoku and probably a little different way of thinking. What's your opinion as a programmer?.


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Posted on: Thu Feb 02, 2012 5:04 pm




Posts: 2192
Joined: Thu May 12, 2011 11:58 pm
Post Re: February puzzel-Red Cross tribute
nicow wrote:
It's OK to maximise visibility, Patrick!

Especially for CLM the hardest puzzle in this series:

My solver confirmed a single solution, after about 8 minutes and 25 seconds...

Download a PDF of the 2nd puzzle here

Patrick


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Posted on: Fri Feb 03, 2012 3:09 pm




Posts: 690
Joined: Fri May 13, 2011 6:51 pm
Post Re: February puzzel-Red Cross tribute
I solved also the hardest Red Cross 16x16 puzzle.
More difficult than the first one of this series of course but not in the proportion shown by the computer (more than 8 minutes...!) in my opinion. Very curiously I arrived to an identical point when placing the two final numbers of the puzzle (c14 = 5 and d14 = 16) in the "41+" red cross (in fact the red crosses are filled practically at the end; if the process of solution of the computer could be stopped in an intermediate point and display the numbers found by the software to that moment it would be interesting to observe if the computer follows a similiar way to a human, in this case the red crosses should be practically empty almost at the end).
In this puzzle the 7's and 14's are very relevant for determining the rows 5, 6 and 7,... . Also the cage "41+" (g15-g16-h16) is an important key.
Thank you again.


Last edited by clm on Fri Feb 03, 2012 11:19 pm, edited 1 time in total.



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Posted on: Fri Feb 03, 2012 3:10 pm




Posts: 690
Joined: Fri May 13, 2011 6:51 pm
Post Re: February puzzel-Red Cross tribute
clm wrote:
I solved the first Red Cross 16x16. More difficult in the beginning (as usual with the big puzzles) but when you have around the 35% or the 40% it goes more quick with the aid of the individual cells provided (probably for this reason the computer took 0.33 secs).
In the process I followed the red crosses were determined in an advanced phase of the solution, in fact I placed the two final numbers of the puzzle (the 2 and the 4, row 14) in the "44+" red cross.
Very amused and esthetically well conceived, alternately you could have coloured in red the four central cages (12 cells) simultaneously showing a big Red Cross.
A suggestion for Patrick for the next's year Christmas puzzle [smile]:
..X
..X
.XX
XXX
..X
,
an 8-cell cage in the center of the puzzle, or four smaller green trees in the corners.


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Posted on: Sun Feb 12, 2012 2:36 pm




Posts: 690
Joined: Fri May 13, 2011 6:51 pm
Post Re: February puzzel-Red Cross tribute
I am a little surprised at the apparent low interest (comments on the solutions, etc. ... ) on these two beautiful 16x16 "Red Cross" puzzles provided by nicow.


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