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Difficulty: 3 of 5 Latest: 2012 Lamps (in Games)
There are 2012 lamps arranged on a table. Two persons Diana and Ethan play the following game.
In each move the player flips the switch of one lamp, but he or she must never get back an arrangement of the lit lamps that has already been on the table. A player who cannot move loses.

Diana makes the first move, followed by Ethan. Who has a winning strategy?

(No Solution Yet, 3 Comments) Submitted on 2015-04-17 by K Sengupta   
Difficulty: 4 of 5 Bonus: Where to 'S'tart (in Cryptography) Rating: 2.17

1st pass encryption - MIF.CLGMFELCMLM.
2nd pass encryption - VO.IOSTSKQOPYY.
3rd pass encryption - K.XXHMMDBFEOX.

1. What answer would Zero pass encryption reveal, given that the encryption method does not change.
2. How much more difficult is it to get to zero level encryption if you don't have the level 1 values, only level 2?

(Solution Posted, 7 Comments) Submitted on 2004-11-30 by Juggler   
Difficulty: 3 of 5A Chinese Scene (in Word Problems)
Posted on 2015-04-17 by broll (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Some powers decomposed (in Numbers)
Posted on 2015-04-16 by Ady TZIDON (No Solution Yet, 5 Comments)
Difficulty: 2 of 5Name the location (in Word Problems)
Posted on 2015-04-16 by Ady TZIDON (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Number Count Conclusion (in Just Math) Rating: 3.00
Posted on 2015-04-15 by K Sengupta (No Solution Yet, 4 Comments)
Difficulty: 2 of 52^(10n) (in Numbers) Rating: 1.00
Posted on 2015-04-15 by Jer (No Solution Yet, 8 Comments)
Difficulty: 3 of 5Famous movie quotations (in General)
Posted on 2015-04-14 by Ady TZIDON (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Integer Triangle Trial (in Shapes)
Posted on 2015-04-14 by K Sengupta (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Non-empty sets element count (in Just Math) Rating: 5.00
Posted on 2015-04-13 by K Sengupta (No Solution Yet, 5 Comments)
Difficulty: 1 of 5So what? (in General)
Posted on 2015-04-13 by Ady TZIDON (No Solution Yet, 5 Comments)
Difficulty: 3 of 5Deux Power Divisibility (in Algorithms)
Posted on 2015-04-12 by K Sengupta (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Side Length Settlement 2 (in Shapes)
Posted on 2015-04-11 by K Sengupta (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Long chain (in Numbers)
Posted on 2015-04-10 by Ady TZIDON (Solution Posted, 7 Comments)
Difficulty: 4 of 5From product to town (in Word Problems)
Posted on 2015-04-10 by Ady TZIDON (Solution Posted, 2 Comments)
Difficulty: 4 of 5Bright light (in Science) Rating: 4.00
Posted on 2015-04-09 by Kenny M (No Solution Yet, 9 Comments)

Recently Posted Solutions:
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Submitted By Ady TZIDON. Solution posted on 2015-04-13 10:28:04
Difficulty: 3 of 5Long chain (in Numbers)
Submitted By Ady TZIDON. Solution posted on 2015-04-13 10:24:50
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Submitted By Ady TZIDON. Solution posted on 2015-04-13 10:23:19
Difficulty: 4 of 5General advice (in Cryptography)
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