MESON Chess Problem Database

Problem Display
PID: 68875 (8/1pNN4/2k3p1/3p1pK1/1P3B2/7B/8/1Q1R4 w - - 0 1)

Abbott, Joseph William

The Chess Players' Quarterly Chronicle, 1871

8/1pNN4/2k3p1/3p1pK1/1P3B2/7B/8/1Q1R4

#2

8 + 5

SOLUTION

  • SOUND
  • Tries
    • 1.Qa2?
      • threat
        • 2.Qxd5#
      • 1...d4
        • 2.Qd5#
        • 2.Qe6#
      • 1...Kxd7!
    • 1.Qd3?
      • threat
        • 2.Qb5#
        • 2.Qxd5#
      • 1...b5
        • 2.Qxb5#
        • 2.Qxd5#
      • 1...b6
        • 2.Qxd5#
      • 1...d4
        • 2.Qb5#
      • 1...Kxd7!
    • 1.Qxf5?
      • threat
        • 2.Rc1#
        • 2.Qc2#
        • 2.Qe6#
        • 2.Qxg6#
        • 2.Qxd5#
        • 2.Qf6#
        • 2.b5#
      • 1...b5
        • 2.Qxd5#
      • 1...b6
        • 2.Qxd5#
      • 1...d4
        • 2.Bg2#
        • 2.Rc1#
        • 2.Qc2#
        • 2.Qe4#
        • 2.Qe6#
        • 2.Qxg6#
        • 2.Qb5#
        • 2.Qc5#
        • 2.Qd5#
        • 2.Qf6#
        • 2.b5#
      • 1...gxf5!
    • 1.Qb3?
      • threat
        • 2.Qxd5#
      • 1...d4
        • 2.Qd5#
        • 2.Qe6#
      • 1...Kxd7!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Qxd5#
        • 2.Qe6#
      • 1...Kxd7
        • 2.Qe8#
      • 1...dxe4
        • 2.b5#
      • 1...fxe4
        • 2.Rc1#
        • 2.b5#
      • 1...b5
        • 2.Qxd5#
      • 1...b6
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XP(a)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT,XS(H)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);::QAB1(A),XP(a)
        • P(a);::QAB1(A)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT,XS(H)
    • Try
      • Q(A);XP(b)
      • Threat
        • DUALS(7)
      • Vars
        • P(e);::QAB1(A),XP(a)
      • Refutation
        • P(d);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XP(a)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT,XS(H)
  • Actual
    • Q(A);P_PINP(a)
    • Threat
      • DUALS(2)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(H)::QAB1(A)
      • P(a);N_SPINP(a),XQ(A)::P(D)
      • P(e);::QAB1(A),XP(a)
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