MESON Chess Problem Database

Problem Display
PID: 152989 (n3B3/K4Pr1/1p4k1/1P6/8/5Q1P/3B4/8 w - - 0 1)

Harley, Brian

Morning Post, 1935

(First published on Sat Aug 24 1935)

n3B3/K4Pr1/1p4k1/1P6/8/5Q1P/3B4/8

#2

7 + 4

15290 Harley Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Kh7
      • 2.Qh5#
    • 1...Rxf7+
      • 2.Qxf7#
    • 1...Rg8
      • 2.fxg8Q#
    • 1...Sc7
      • 2.f8S#
  • Tries
    • 1.Kb7?
      • 1...Rxf7+
        • 2.Qxf7#
      • 1...Kh7
        • 2.Qh5#
      • 1...Rg8
        • 2.fxg8Q#
      • 1...Sc7
        • 2.f8S#
      • 1...Rh7!
    • 1.Kxa8?
      • threat
        • 2.f8S#
      • 1...Kh7
        • 2.Qh5#
      • 1...Rxf7
        • 2.Qxf7#
      • 1...Rg8
        • 2.fxg8Q#
      • 1...Rh7!
    • 1.Kb8?
      • threat
        • 2.f8S#
      • 1...Kh7
        • 2.Qh5#
      • 1...Rxf7
        • 2.Qxf7#
      • 1...Rg8
        • 2.fxg8Q#
      • 1...Rh7!
    • 1.Bc1?
      • 1...Rxf7+
        • 2.Qxf7#
      • 1...Kh7
        • 2.Qh5#
      • 1...Rg8
        • 2.fxg8Q#
      • 1...Sc7
        • 2.f8S#
      • 1...Rh7!
    • 1.Be3?
      • 1...Rxf7+
        • 2.Qxf7#
      • 1...Kh7
        • 2.Qh5#
      • 1...Rg8
        • 2.fxg8Q#
      • 1...Sc7
        • 2.f8S#
      • 1...Rh7!
    • 1.Qg4+?
      • 1...Kh7
        • 2.Qh5#
      • 1...Kf6!
    • 1.Qc6+?
      • 1...Kh5
        • 2.Qh6#
      • 1...Kh7
        • 2.Qh6#
      • 1...Kf5!
    • 1.Qf6+?
      • 1...Kh5
        • 2.Qh6#
      • 1...Kh7
        • 2.Qh6#
      • 1...Kxf6!
    • 1.h4?
      • 1...Rxf7+
        • 2.Qxf7#
      • 1...Kh7
        • 2.Qh5#
      • 1...Rg8
        • 2.fxg8Q#
      • 1...Sc7
        • 2.f8S#
      • 1...Rh7!
  • Keys
    • 1.Qf4!
      • 1...Rxf7+
        • 2.Qxf7#
      • 1...Kh5
        • 2.Qh6#
      • 1...Kh7
        • 2.Qh6#
      • 1...Rg8
        • 2.fxg8Q#
      • 1...Rh7
        • 2.Qg5#
      • 1...Sc7
        • 2.f8S#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAR2(B)
    • R(c);CHECK,OGATE,P_SPINR(c),XP(F)::QAB1(B),XR(c)
    • R(c);N_PINP(F)::PXR(c)=Q
    • S(d);N_PINP(F)::P=S
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Vars
        • R(c);CHECK,OGATE,P_SPINR(c),XP(F)::QAB1(B),XR(c)
        • K(b);S_FLIGHT::QAR2(B)
        • R(c);N_PINP(F)::PXR(c)=Q
        • S(d);N_PINP(F)::P=S
      • Refutation
        • R(c);
    • Try
      • K(E);N_SPINP(F),P-FLIGHT,XS(d)
      • Threat
        • P=S
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
        • R(c);OGATE,P_SPINR(c),XP(F)::QAB1(B),XR(c)
        • R(c);OGATE,P_PINB(G)::PXR(c)=Q
      • Refutation
        • R(c);
    • Try
      • K(E);N_SPINP(F),S_FLIGHT
      • Threat
        • P=S
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
        • R(c);OGATE,P_SPINR(c),XP(F)::QAB1(B),XR(c)
        • R(c);OGATE,P_PINB(G)::PXR(c)=Q
      • Refutation
        • R(c);
    • Try
      • B(A);
      • Vars
        • R(c);CHECK,OGATE,P_SPINR(c),XP(F)::QAB1(B),XR(c)
        • K(b);S_FLIGHT::QAR2(B)
        • R(c);N_PINP(F)::PXR(c)=Q
        • S(d);N_PINP(F)::P=S
      • Refutation
        • R(c);
    • Try
      • B(A);
      • Vars
        • R(c);CHECK,OGATE,P_SPINR(c),XP(F)::QAB1(B),XR(c)
        • K(b);S_FLIGHT::QAR2(B)
        • R(c);N_PINP(F)::PXR(c)=Q
        • S(d);N_PINP(F)::P=S
      • Refutation
        • R(c);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT,XQ(B)
    • Try
      • P(C);
      • Vars
        • R(c);CHECK,OGATE,P_SPINR(c),XP(F)::QAB1(B),XR(c)
        • K(b);S_FLIGHT::QAR2(B)
        • R(c);N_PINP(F)::PXR(c)=Q
        • S(d);N_PINP(F)::P=S
      • Refutation
        • R(c);
  • Actual
    • Q(B);
    • Vars
      • R(c);CHECK,OGATE,P_SPINR(c),XP(F)::QAB1(B),XR(c)
      • K(b);S_FLIGHT::QAR1(B)
      • R(c);N_PINP(F)::PXR(c)=Q
      • R(c);SBLOCK::QAR1(B)
      • S(d);N_PINP(F)::P=S
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