MESON Chess Problem Database

Problem Display
PID: 210183 (8/8/Bp6/kp2K3/1p2Q3/8/8/8 w - - 0 1)

Hultberg, Gustav Herbert

Springaren, 1989

8/8/Bp6/kp2K3/1p2Q3/8/8/8

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kxa6
      • 2.Qa8#
  • Tries
    • 1.Bxb5?
      • 1...b3
        • 2.Qa4#
      • 1...Kxb5!
    • 1.Qg2?
      • threat
        • 2.Qa2#
      • 1...Ka4
        • 2.Qa2#
      • 1...Kxa6
        • 2.Qa8#
      • 1...b3!
    • 1.Qc6?
      • threat
        • 2.Qxb5#
      • 1...Kxa6
        • 2.Qa8#
      • 1...Ka4!
    • 1.Qe2?
      • threat
        • 2.Qxb5#
        • 2.Qa2#
      • 1...Ka4
        • 2.Qa2#
      • 1...b3
        • 2.Qxb5#
      • 1...Kxa6!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Qa2#
        • 2.Qxb5#
      • 1...Ka4
        • 2.Qa2#
      • 1...Kxa6
        • 2.Qa8#
      • 1...b3
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,P-FLIGHT,XB(C)::QAR2(A)
  • Tries
    • Try
      • B(C);XP(c)
      • Vars
        • P(a);OGATE::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT,XB(C)
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
        • K(b);OGATEB,P-FLIGHT,XB(C)::QAR2(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(c)
      • Vars
        • K(b);OGATEB,P-FLIGHT,P_SPINP(d),XB(C)::QAR2(A)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
        • P(a);::QAR1(A),XP(c)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c),XB(C)
  • Actual
    • Q(A);P_PINP(c)
    • Threat
      • DUALS(2)
    • Vars
      • K(b);N_SPINP(c),P-FLIGHT::QAR2(A)
      • K(b);N_SPINP(c),OGATEB,P-FLIGHT,XB(C)::QAR2(A)
      • P(a);::QAR1(A),XP(c)
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