rookie1ja

I agree.

Sure, if you have lungs to suck it out of let's say 0.5 metre deep pipe

could you distinguish the 2 parts with different colors?

Matchstick Equations - Back to the Matchstick Puzzles Try to rectify a mistake by moving a single matchstick, to get the correct equation. (Edit: you can not place any matchstick diagonally over the equals sign) The following equation is made of 11 matches: XI - V = IV (more solutions) The following equation is made of 11 matches: X + V = IV (more solutions) The following equation is made of 10 matches: L + L = L (more solutions) The following equation is made of 12 matches: VI = IV - III (more solutions) The following equation is made of 14 matches: XIV - V = XX The following equation is made of 11 matches: IX - IX = V The following equation is made of 12 matches: X = VIII - II The following equation is made of 7 matches: VII = I This old topic is locked since it was answered many times. You can check solution in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers.

4 Identical Triangles - Back to the Matchstick Puzzles Move one matchstick to get 4 triangles. This old topic is locked since it was answered many times. You can check solution in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers.

Matchstick Equation - Back to the Matchstick Puzzles Move one matchstick to get the correct equation. Edit: the answer is correct only to 2 decimal digits (since equals sign has to be kept). This old topic is locked since it was answered many times. You can check solution in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers.

Shovel - Back to the Matchstick Puzzles Move just two matches and remove dust from the shovel. This old topic is locked since it was answered many times. You can check solution in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers.

House - Back to the Matchstick Puzzles 1. Move just two matches to make eleven squares. 2. Move four matches and form fifteen squares. This old topic is locked since it was answered many times. You can check solution in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers.

Scales - Back to the Matchstick Puzzles Move 5 matches to make the scales balanced. This old topic is locked since it was answered many times. You can check solution in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers.

Fish - Back to the Matchstick Puzzles Move just 3 matches so that the fish swims the other direction. This old topic is locked since it was answered many times. You can check solution in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers.

No. 1 - Back to the Cryptograms and Algebra Puzzles Replace the same characters by the same numerals so that the mathematical operations are correct. ABCB - DEFC = GAFB : + - DH x AB = IEI ---------------------- GGE + DEBB = DHDG[/code] [size=4][color=#FF0000][b]This old topic is locked since solution is already provided in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers.[/b][/color][/size] [spoiler=Solution][b]No. 1 - solution[/b] A=3, B=8, C=0, D=1, E=4, F=5, G=2, H=7, I=6 [code]3808 - 1450 = 2358 : + - 17 x 38 = 646 ------------------------- 224 + 1488 = 1712

No. 2 - Back to the Cryptograms and Algebra Puzzles Replace the same characters by the same numerals so that the mathematical operations are correct. IFIB - EBG = CEH - - + CCE / GD = FE ------------------------ EFF + EED = CBA[/code] [size=4][color=#FF0000][b]This old topic is locked since solution is already provided in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers.[/b][/color][/size] [spoiler=Solution][b]No. 2 - solution[/b] A=9, B=7, C=8, D=6, E=4, F=3, G=2, H=5, I=1 [code]1317 - 472 = 845 - - + 884 / 26 = 34 ------------------------ 433 + 446 = 879

No. 3 - Back to the Cryptograms and Algebra Puzzles Replace the same characters by the same numerals so that the mathematical operations are correct. RE + MI = FA DO + SI = MI LA + SI = SOL This old topic is locked since solution is already provided in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers.

No. 4 - Back to the Cryptograms and Algebra Puzzles Replace the same characters by the same numerals so that the mathematical operations are correct. SEND MORE --------- MONEY This old topic is locked since solution is already provided in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers.

No. 5 - Back to the Cryptograms and Algebra Puzzles Replace the same characters by the same numerals so that the mathematical operations are correct. SEVEN + SEVEN + SIX = TWENTY This old topic is locked since solution is already provided in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers.

No. 6 - Back to the Cryptograms and Algebra Puzzles Replace the same characters by the same numerals so that the mathematical operations are correct. MOST MOST ---------- TORZO hint: Z = 4 This old topic is locked since solution is already provided in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers.

No. 7 - Back to the Cryptograms and Algebra Puzzles Replace the same characters by the same numerals so that the mathematical operations are correct. SINUS SINUS KOSINUS ------------- TANGENS This old topic is locked since solution is already provided in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers.

No. 8 - Back to the Cryptograms and Algebra Puzzles Replace the same characters by the same numerals so that the mathematical operations are correct. KAJAK KAJAK KAJAK KAJAK KAJAK KAJAK ---------- VESLO This old topic is locked since solution is already provided in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers.

No. 9 - Back to the Cryptograms and Algebra Puzzles Replace the same characters by the same numerals so that the mathematical operations are correct. DVA * DVA = ŠTYRI D + V + A + D + V + A = Š + T + Y + R + Y This old topic is locked since solution is already provided in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers.

No. 10 - Back to the Cryptograms and Algebra Puzzles Replace the same characters by the same numerals so that the mathematical operations are correct. (AA)B = ABBA This old topic is locked since solution is already provided in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers.

No. 11 - Back to the Cryptograms and Algebra Puzzles Replace the same characters by the same numerals so that the mathematical operations are correct. ALFA + BETA + GAMA = DELTA This old topic is locked since solution is already provided in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers.

No. 12 - Back to the Cryptograms and Algebra Puzzles Replace the same characters by the same numerals so that the mathematical operations are correct. ABC + DEF = GHIJ This old topic is locked since solution is already provided in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers.

No. 13 - Back to the Cryptograms and Algebra Puzzles Replace the same characters by the same numerals so that the mathematical operations are correct. ABC x DEF = 123456, if A = 1 This old topic is locked since solution is already provided in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers.

No. 14 - Back to the Cryptograms and Algebra Puzzles Replace the same characters by the same numerals so that the mathematical operations are correct. ABCD*D = DCBA This old topic is locked since solution is already provided in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers.

No. 15 - Back to the Cryptograms and Algebra Puzzles Replace the same characters by the same numerals so that the mathematical operations are correct. ABCD*E = DCBA This old topic is locked since solution is already provided in the Spoiler below. Pls visit New Puzzles section to see always fresh brain teasers.