MESON Chess Problem Database

Problem Display
PID: 47046 (8/5P2/5P2/5p1k/5PN1/6P1/4Q1K1/8 w - - 0 1)

Morse, Christopher Jeremy

The Problemist Supplement, 2003

8/5P2/5P2/5p1k/5PN1/6P1/4Q1K1/8

#2

7 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Qd3?
      • threat
        • 2.Qxf5#
      • 1...Kxg4
        • 2.Qe2#
        • 2.Qd1#
        • 2.Qf3#
      • 1...fxg4
        • 2.Qh7#
      • 1...Kg6!
    • 1.Qb5?
      • threat
        • 2.Qxf5#
      • 1...Kxg4
        • 2.Qe2#
      • 1...Kg6!
    • 1.Qc2?
      • threat
        • 2.Qxf5#
      • 1...Kxg4
        • 2.Qd1#
        • 2.Qe2#
      • 1...fxg4
        • 2.Qh7#
      • 1...Kg6!
    • 1.Qe5?
      • threat
        • 2.Qxf5#
      • 1...Kxg4
        • 2.Qe2#
      • 1...Kg6!
    • 1.f8Q?
      • threat
        • 2.Se5#
        • 2.Qh6#
        • 2.Qf7#
        • 2.Qfe8#
      • 1...fxg4
        • 2.Qee8#
      • 1...Kg6!
    • 1.f8B?
      • threat
        • 2.Se5#
      • 1...fxg4
        • 2.Qe8#
      • 1...Kg6!
  • Keys
    • 1.Qe8!
      • 1...Kxg4
        • 2.Qe2#
      • 1...Kg6
        • 2.f8S#
      • 1...fxg4
        • 2.f8Q#
        • 2.f8B#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR2(A),XP(a)
      • Vars
        • P(a);OGATE,SBLOCK,XS(E)::QAR2(A)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • Q(A);P_PINP(a)
      • Threat
        • QAR2(A),XP(a)
      • Vars
        • K(b);N_SPINP(a),OGATEB,S_FLIGHT,XS(E)::QAB(A)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR2(A),XP(a)
      • Vars
        • P(a);OGATE,SBLOCK,XS(E)::QAR2(A)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • Q(A);P_PINP(a)
      • Threat
        • QAR2(A),XP(a)
      • Vars
        • K(b);N_SPINP(a),OGATEB,S_FLIGHT,XS(E)::QAB(A)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • P(G);
      • Threat
        • DUALS(4)
      • Vars
        • P(a);P_SPINP(a),SBLOCK,XS(E)::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(G);
      • Threat
        • QAB(A)+S(E)
      • Vars
        • P(a);P_SPINP(a),SBLOCK,XS(E)::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(E)::QAB(A)
      • K(b);S_FLIGHT::P=S
      • P(a);SBLOCK,XS(E)::P=Q
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