• B + C = A
  • B + D = C

Solve

  • B = CC
  • AD = D

Solve

  • B + D = A + 2
  • A + D = B + 4

Solve

  • B + D = A + 4
  • B + C = D + 3

Solve

  • C = D + 2
  • A = D + 1
  • A = B + 2

Solve

  • A = D + 1
  • D = C + 2

Solve

  • B = 4D
  • A = 3D

Solve

  • 2C = B
  • 4D = 3B

Solve

  • 2C = B
  • A > B
  • 2A = 3B

Solve

  • 4A = 3B
  • 2B = 4D

Solve

  • B + D = A + C
  • D ≠ 2
  • A ≠ 4
  • C ≠ 4
  • A ≠ 3
  • B ≠ 4

Solve

  • C + D = A + B
  • D ≠ 2
  • A ≠ 2
  • C ≠ 2
  • D ≠ 4

Solve

  • 2C = A + D
  • B > C
  • 2A = B + C

Solve

  • 2B = C + D
  • B > A
  • 2C = A + B

Solve

  • A + C ≤ 3
  • C + D = B

Solve

  • B + D = C
  • B + C ≤ 5
  • C > A

Solve

  • A + C = 3
  • A + B = 6

Solve

  • A + C = 6
  • A + B + D = 8
  • A + B = 5

Solve

  • if A + D ≤ 6 then B < 1
  • if C ≤ 2 then A + B ≤ 4

Solve

  • if B ≤ 3 then C ≤ 2
  • if D ≠ 1 then A + B ≤ 4
  • if A + D ≤ 5 then B < 2

Solve

  • C + D ≤ 6 if and only if A > 1
  • D < 1 if and only if B ≤ 2
  • D ≠ 4 if and only if A ≤ 3
  • A + D ≤ 3 if and only if B ≠ 3

Solve

  • A + B ≤ 7 if and only if C + D ≤ 3
  • C < 3 if and only if A ≠ 3
  • A ≠ 2 if and only if D ≤ 1

Solve

  • A + B = 5
  • C = BC
  • B + C = 4

Solve

  • 2B + C = A

Solve

  • D = BB
  • AC = BC + C

Solve

  • B > AC
  • AA = B

Solve

  • BC = A + C + D
  • 2D < 4

Solve

  • 2C = B
  • B + D > 4C
  • 4C = D

Solve

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