In a chess tournament there are 5 boards.
Players A, B, C, D and E are playing white
while the players F, G, H, I and J have black.
The following openings were chosen:
1.e4 Nf6 2.e5 Nd5,
1.d4 Nf6 2.c4 c5
1.e4 c6 2.d4 d5
1.d4 d5 2.c4 dc:
1.c4 e5 2.Nc3 Nf6
These statements are true about the games:
1. F, having an extra pawn as well as D, plays at board #1
2. A, who made the first move later than G, plays at board #2
3. At board #3 white white played the same first move as A
4. At board #4 black's first move was from a black to a white square
5. The opponent of B gained a material edge on the 2nd move
6. I hasn't moved any pawns within the first 2 moves.
7. A, B, C, F and H have winning positions.
What are the pairings at what board # and which opening was played at which board #?
Sorry about my poor English.
Originally posted by jfkjmhThe first statement is a bit ambiguous. I assume it means that D also has an extra pawn (and not that they both play at board #1). How about:
In a chess tournament there are 5 boards.
Players A, B, C, D and E are playing white
while the players F, G, H, I and J have black.
The following openings were chosen:
1.e4 Nf6 2.e5 Nd5,
1.d4 Nf6 2.c4 c5
1.e4 c6 2.d4 d5
1.d4 d5 2.c4 dc:
1.c4 e5 2.Nc3 Nf6
These statements are true about the games:
1. F, having an extra pawn as well as D, plays a ...[text shortened]... s at what board # and which opening was played at which board #?
Sorry about my poor English.
#1 played by E - F : 1.c4 e5 2.Nc3 Nf6
#2 played by A - J : 1.d4 Nf6 2.c4 c5
#3 played by B - G : 1.d4 d5 2.c4 dc:
#4 played by D - H : 1.e4 c6 2.d4 d5
#5 played by C - I : 1.e4 Nf6 2.e5 Nd5
Originally posted by jfkjmhHow can condition #7 be true? They're all book openings.
In a chess tournament there are 5 boards.
Players A, B, C, D and E are playing white
while the players F, G, H, I and J have black.
The following openings were chosen:
1.e4 Nf6 2.e5 Nd5,
1.d4 Nf6 2.c4 c5
1.e4 c6 2.d4 d5
1.d4 d5 2.c4 dc:
1.c4 e5 2.Nc3 Nf6
These statements are true about the games:
1. F, having an extra pawn as well as D, plays a ...[text shortened]... s at what board # and which opening was played at which board #?
Sorry about my poor English.
Originally posted by BigDoggProblemThere is nothing in the statements saying that the 'winning' positions are after black's second move. Another statement is about two players being a pawn up, which also is not the case after all moves #2
How can condition #7 be true? They're all book openings.
Originally posted by Mephisto2Only 70 minutes!
The first statement is a bit ambiguous. I assume it means that D also has an extra pawn (and not that they both play at board #1). How about:
#1 played by E - F : 1.c4 e5 2.Nc3 Nf6
#2 played by A - J : 1.d4 Nf6 2.c4 c5
#3 played by B - G : 1.d4 d5 2.c4 dc:
#4 played by D - H : 1.e4 c6 2.d4 d5
#5 played by C - I : 1.e4 Nf6 2.e5 Nd5
How, exactly, did you do it ?
Originally posted by propawnkillerFrom:
Only 70 minutes!
How, exactly, did you do it ?
S1: F at #1, D not at #1
S2: A at #2, G not at #2
S4: black's first move at #4 was 1. ... c6, meaning 1.e4 c6 2.d4 d5
S3: same opening move at boards 2 and 3, must be 1.d4 (two boards opened 1.e4 but one was at #4)
S5: B plays at #3 (only one opening with a capture)
leaves us already this:
#1 ?(not D) - F ????
#2 A - ?(not G) 1.d4 Nf6 2.c4 c5
#3 B - ? 1.d4 d5 2.c4 dc:
S7 is very rich. F doesn't play A, B or C (nor D see above), leaves only E:
#1 E - F ?????
S6 I plays the Alekhine, not at #2 or #3, not at #1 (above) hence #4 or #5
but from S7, I plays A, B or C, hence he plays C (B and C on other boards)
from the above, H can only play D (not A, B,C and E plays F)
This leaves only J as opponent for A (not F or H, not G, not I wrong opening)
And that leaves only G as opponent for B (not F or H, not I wrong opening, not J playing A)
Gives the following status:
#1 E - F ???? (not 1.d4)
#2 A - J 1.d4 Nf6 2.c4 c5
#3 B - G 1.d4 d5 2.c4 dc:
?? D - H ???
?? C - I Alekhine
Of the two options remaining, the Alekhine was on board #5 (at #4 black played 1. ... c6)
So, #4 is the Caro Kan, leaving the English as only option for #1. Result:
#1 E - F 1.c4 e5 2.Nc3 Nf6
#2 A - J 1.d4 Nf6 2.c4 c5
#3 B - G 1.d4 d5 2.c4 dc:
#4 D - H 1.e4 c6 2.d4 d5
#5 C - I 1.e4 Nf6 2.e5 Nd5