MESON Chess Problem Database

Problem Display
PID: 69967 (N3KBN1/8/8/3k2p1/P5p1/R4PP1/8/Q7 w - - 0 1)

Fillery, William Edmund Frank

Chess, 1950

N3KBN1/8/8/3k2p1/P5p1/R4PP1/8/Q7

#2

9 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Sb6#
  • Tries
    • 1.Kd7?
      • threat
        • 2.Sb6#
      • 1...Kc4
        • 2.Sb6#
      • 1...gxf3!
    • 1.Sb6+?
      • 1...Ke6
        • 2.Qf6#
      • 1...Kc6!
    • 1.Sc7+?
      • 1...Kc4
        • 2.Qc3#
      • 1...Kc6!
    • 1.Rd3+?
      • 1...Kc4
        • 2.Qc3#
        • 2.Qd4#
      • 1...Ke6
        • 2.Qf6#
      • 1...Kc6!
    • 1.Qd4+?
      • 1...Kc6
        • 2.Qe4#
        • 2.Qd7#
      • 1...Ke6
        • 2.Qe4#
      • 1...Kxd4!
    • 1.Qe5+?
      • 1...Kc4
        • 2.Sb6#
        • 2.Rc3#
        • 2.Qe4#
        • 2.Qc5#
      • 1...Kc6
        • 2.Qe4#
        • 2.Qb5#
      • 1...Kxe5!
    • 1.Qf6?
      • threat
        • 2.Sb6#
      • 1...Kc4
        • 2.Sb6#
      • 1...gxf3!
    • 1.Qb1?
      • threat
        • 2.Qe4#
      • 1...Kc4
        • 2.Qd3#
        • 2.Qe4#
      • 1...Kd4
        • 2.Qe4#
      • 1...Ke5
        • 2.Qe4#
      • 1...Kc6
        • 2.Qe4#
        • 2.Qb5#
      • 1...Ke6
        • 2.Qe4#
      • 1...gxf3!
    • 1.Qe1?
      • threat
        • 2.Qe4#
      • 1...Kc4
        • 2.Qe4#
      • 1...Kd4
        • 2.Qe4#
      • 1...Kc6
        • 2.Qe4#
      • 1...gxf3!
    • 1.f4?
      • 1...Kc4
        • 2.Sb6#
      • 1...Ke4
        • 2.Qe5#
      • 1...Kc6
        • 2.Qh1#
      • 1...Ke6
        • 2.Qe5#
      • 1...gxf4!
  • Keys
    • 1.fxg4!
      • 1...Kc4
        • 2.Sb6#
      • 1...Ke4
        • 2.Sf6#
      • 1...Kc6
        • 2.Qh1#
      • 1...Ke6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::S(F)
  • Tries
    • Try
      • K(G);S_FLIGHT
      • Threat
        • S(F)
      • Vars
        • K(b);S_FLIGHT::S(F)
      • Refutation
        • P(a);XP(C)
    • Try
      • S(F);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(A)
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
    • Try
      • Q(A);
      • Threat
        • S(F)
      • Vars
        • K(b);S_FLIGHT::S(F)
      • Refutation
        • P(a);XP(C)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
        • K(b);S_FLIGHT::QAR2(A)
      • Refutation
        • P(a);XP(C)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(b);S_FLIGHT::QAR2(A)
        • K(b);P-FLIGHT::QAR1(A)
        • K(b);S_FLIGHT::QAB(A)
      • Refutation
        • P(a);XP(C)
    • Try
      • P(C);
      • Vars
        • K(b);S_FLIGHT::S(F)
        • K(b);S_FLIGHT::QAR1(A)
        • K(b);S_FLIGHT::QAB(A)
      • Refutation
        • P(c);XP(C)
  • Actual
    • P(C);XP(a)
    • Vars
      • K(b);S_FLIGHT::S(F)
      • K(b);S_FLIGHT::S(I)
      • K(b);S_FLIGHT::QAB(A)
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