MESON Chess Problem Database

Problem Display
PID: 145066 (4N2B/4p1Np/7K/4kp2/2P1b3/4Q3/8/8 w - - 0 1)

Goulty, Allison Howard

Chess Amateur (The), 1920

4N2B/4p1Np/7K/4kp2/2P1b3/4Q3/8/8

#2

6 + 5

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.Qc3#
    • 1...e6
      • 2.Sh5#
  • Tries
    • 1.Kxh7?
      • 1...e6
        • 2.Sh5#
      • 1...f4+!
    • 1.Qg3+?
      • 1...f4
        • 2.Qc3#
      • 1...Kd4!
  • Keys
    • 1.Qe2!
      • 1...Kd4
        • 2.Se6#
      • 1...Kf4
        • 2.Sh5#
      • 1...f4
        • 2.Qb2#
      • 1...e6
        • 2.Sh5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAB(A)
    • P(d);SBLOCK::B(F)+S(D)
  • Tries
    • Try
      • K(C);P-FLIGHT,XP(e)
      • Vars
        • P(d);SBLOCK::B(F)+S(D)
      • Refutation
        • P(c);CHECK
    • Try
      • Q(A);CHECK,N_PINB(a)
      • Vars
        • P(c);P_SPINP(c),SBLOCK::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);N_SPINB(a),S_FLIGHT::B(F)+S(D),DCHECK
      • K(b);N_SPINB(a),S_FLIGHT::S(D)
      • P(c);SBLOCK::QAB(A)
      • P(d);SBLOCK::B(F)+S(D)
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