MESON Chess Problem Database

Problem Display
PID: 2140 (5B2/3Bq3/bb6/R1n5/pkp1p3/R3p3/2K3Q1/8 w - - 0 1)

Brown, Theodore Morris

Source?, 0000

5B2/3Bq3/bb6/R1n5/pkp1p3/R3p3/2K3Q1/8

#2

6 + 9

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...Qh4
      • 2.R3xa4#
      • 2.R5xa4#
    • 1...Qg5
      • 2.R3xa4#
      • 2.R5xa4#
    • 1...Qf6
      • 2.R3xa4#
      • 2.R5xa4#
    • 1...Qd8
      • 2.R3xa4#
      • 2.R5xa4#
    • 1...Qe5
      • 2.R3xa4#
      • 2.R5xa4#
    • 1...Qe6
      • 2.R3xa4#
      • 2.R5xa4#
    • 1...Qf7
      • 2.R3xa4#
      • 2.R5xa4#
    • 1...Qg7
      • 2.R3xa4#
      • 2.R5xa4#
    • 1...Qh7
      • 2.R3xa4#
      • 2.R5xa4#
    • 1...Qe8
      • 2.R3xa4#
      • 2.R5xa4#
    • 1...Sb3
      • 2.R3xa4#
    • 1...Sd3
      • 2.R3xa4#
    • 1...Se6
      • 2.R3xa4#
    • 1...Sb7
      • 2.R3xa4#
    • 1...Sxd7
      • 2.R3xa4#
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qc3#
      • 1...Kxa3
        • 2.Qb2#
      • 1...Kxa5
        • 2.Qc3#
      • 1...Qxg7
        • 2.R3xa4#
        • 2.R5xa4#
      • 1...c3
        • 2.Qxc3#
      • 1...Qf6
        • 2.R3xa4#
        • 2.R5xa4#
      • 1...Qe5
        • 2.R3xa4#
        • 2.R5xa4#
      • 1...Sb3
        • 2.R3xa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • S(f);N_GUARD,P_SPINQ(i)::R1(C),XP(b)
    • S(f);N_GUARD,P_SPINQ(i),XB(E)::R1(C),XP(b)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • K(c);P_SPINP(b),S_FLIGHT,XR(C)::QAB1(B)
      • K(c);P_SPINP(b),S_FLIGHT,XR(D)::QAB(B)
      • P(d);::QAB1(B),XP(d)
      • S(f);N_GUARD,P_SPINQ(i)::R1(C),XP(b)
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