See stage-1 for the rules.

4 variables here (D, E, F, G). Get all 4 right to get 1 point.

D was a famous syntax convention invented much, much later by famous programmer **E during **his employment at F. Although D and B sound similar the connection between the two is, at best, a play on words. The only similarity between D and B is that both are named after the nation-of-origin of their creator. C and F on the other hand, have had a fairly long and fairly amenable relationship. C and F teamed up hoping to pre-empt the announcement of device G last year, but that flopped. Although they hit the market a month before G, no one heard of their device.

Cracked by dineshk, Kaustubh, Rogi, apar, jowens, p vs np, puneet_k, shrik, Sumanth Patlolla, Dibyo, Bharath, Pawankumar Hegde, madhur, lanu, Raghuvansh, Qbrain, vinayaknp, udupendra and Siddarth Pai

A slight twist. Three questions, back-to-back, all related. All you need to do is tell us what the variables A through K stand for.

Anyone who gets the whole set gets a bonus point. All questions remain open for 3 more days!

This post has 3 variables (A, B, C). Get all 3 right to get 1 point :-)

Eastern-european logician A invented B around 1920 in order to simplify sentences used in propositional calculus. B remained in use largely in logic and didn’t see much interest in mainstream arithmetic. Despite this, a “reversed” version of B became popular with some electronic devices, notably those from company C! The devices from C, especially, have become iconic and gained a cult following. (Though many people consider them to be merely a curiosity, C’s devices have some very advanced arithmetic in them and a Turing Award winning UCBerkeley maths/CS prof was involved in their design!).

Cracked by Rogi(2), dineshk(2), Kaustubh(2), jowens(2), p vs np(2), puneet_k(2), Sumanth Patlolla(2), shrik(2), Dibyo(2), vinayaknp(2), Bharath(2), Pawankumar Hegde(2), madhur(2), Qbrain(2), lanu(2), Goyal, buk, Anjul, apar, Siddarth Pai and Aravind

And these people got the **bonus point! **

Rogi, dineshk, Kaustubh, jowens, p vs np, puneet_k, Sumanth Patlolla, shrik, Dibyo, vinayaknp, Bharath, Pawankumar Hegde, madhur, Qbrain, lanu,

In homage to what?

Cracked by: dineshk, Atul Mathew, puneet_k, Qbrain, duriel, Pawankumar Hegde, Rogi, Anjul, Ananth, Manish Achuth, jowens, Rahul Rajeev, Moju21, shrik, v.chandrashekar, Thejas V R, vijayaraghavan, Kaustubh, apar, Bharath and aditthya

Where would you find this?

Cracked by: Sumanth Patlolla, Manish Achuth, Dibyo, Siddarth Pai, Rogi, Raghuvansh, Rahul Rajeev, Tushar S, Pawankumar Hegde, dineshk, Shwetha Maiya, shrik, jowens, Kaustubh, v.chandrashekar, Bharath, rohanquizzer, raklodramA, lanu, apar, Sanador, mankuTimma, Qbrain, xeqtor, duriel, aditthya, Ananth and Moju21

Hola quiz-amigos. I am back after a long hiatus, during which time The Incredible Devadutta has posted some utterly brilliant questions and managed this place completely solo. Many thanks Mr D!

Here’s welcoming the new year with a back-to-basics Geekiness question. See the graphs below. What are they depicting?

PS: Refrain from going into gory details, plzkthx!

Cracked by: udupendra, Kaustubh, Bharath, dineshk, Rogi, jowens, Manish Achuth, duriel, Shwetha Maiya, shrik, Tushar S, Dibyo, raklodramA, Raghuvansh, Pawankumar Hegde, SV, Logik, Sumanth Patlolla, Rahul Rajeev, apar, lanu, Thejas V R, Ananth, Bipin Banavalikar, Siddarth Pai and Rahulk

Yay! Obscure meme question time.

Explain.

There are a lot more “art” forms of this type all over the net.

Treasure Hunt update: 3 people have cracked the puzzle, so the hunt will be closed tomorrow. If you hurry up, you can still get yourself 3 points!

Hint for stage 4: The blowfish you see is not a reference to the cipher.

Cracked by: Kaustubh, Sumanth Patlolla, jowens, xeqtor, Manish Achuth, Pawankumar Hegde, Dibyo, Rahulk, Rahul Rajeev, Rogi, Thejas V R, Anjul, udupendra, shrey, shrik, aditthya, apar, Bharath, Aparna, dineshk, duriel, Shwetha Maiya, Rithwik K, raklodramA, Logik, Raghuvansh and Ananth

Famous psychological experiment. Identify the dude (the freaky looking dog is his “apparatus” for the experiment)

AutoRaja will be back on Wednesday. So, please leave comments on unanswered questions asap.

Hint for treasure hunt: In stage 2, the owl is asking you to find a file.

Cracked by: xeqtor, Pawankumar Hegde, Kaustubh, Rahulk, mrsgollum, udupendra, Tribhuvanesh, shrik, Rogi, Dibyo, fistea, Logik, nishansolo, buk, Anjul, Tushar S, aditthya, joe, rohanquizzer, rey de v, Sumanth Patlolla, Rahul Rajeev, vinayaknp, Manish Achuth, Ananth, Goyal, Chris Danaceau, v.chandrashekar, duriel, dineshk, Siddarth Pai, badideabear, byslexia, shrey, jowens, Qbrain, Piyush, Thejas V R, eswar.pm, lanu, Nanda, shenoyvarun86, apar, Bharath, Aparna, Shwetha Maiya, Rithwik K, mankuTimma, Sanador, raklodramA and stinky94

Identify this “car"and tell us what makes it special.

Cracked by: xeqtor, pavan, shrik, shrey, Thejas V R, Logik, Dibyo, Manish Achuth, Raghuvansh, jowens, Rahul Rajeev, duriel, dineshk, Pawankumar Hegde, Tushar S, Ananth, Piyush, apar, Anjul, Moju21, lotuseater, Sumanth Patlolla, nishansolo, Rithwik K, Rogi, udupendra, Qbrain, rohanquizzer, Goyal, mankuTimma, byslexia, SV, Rahulk, lanu, eswar.pm, aditthya, Sanador, Bharath, Shwetha Maiya, bluegem4, raklodramA, Aparna and v.chandrashekar

What is blocked out in black? (Ignore the pixelized content)

Cracked by: udupendra, jowens, dineshk, Rogi, shrik, shrey, Dibyo, apar, duriel, Manish Achuth, Moju21, Tushar S, Mukul, sandman, xeqtor, pavan, Thejas V R, Logik, Raghuvansh, Rahul Rajeev, Pawankumar Hegde, Ananth, Piyush, Anjul, lotuseater, Sumanth Patlolla, nishansolo, Rahulk, rey de v, rohanquizzer, vinayaknp, Goyal, byslexia, Kaustubh, lanu, shenoyvarun86, aditthya, Bharath, Aparna, Qbrain, Shwetha Maiya, mankuTimma, bluegem4, raklodramA and v.chandrashekar

Identify

Here is a video of it in action

and yes, hint:

Cracked by: shrik, puneet_k, Rahul Rajeev, Tushar S, Thejas V R, Sumanth Patlolla, Manish Achuth, pavan, Dibyo, Rogi, jowens, duriel, xeqtor, Rahulk, Raghuvansh, Moju21, udupendra, dineshk, apar, sandman, Logik, Pawankumar Hegde, Ananth, Piyush, Rithwik K, rohanquizzer, Kaustubh, lanu, shenoyvarun86, aditthya, aditthya, Bharath, Shwetha Maiya, Qbrain, mankuTimma, raklodramA, Aparna and v.chandrashekar