MESON Chess Problem Database

Problem Display
PID: 152781 (8/8/8/5K2/4p2Q/4B1RP/7k/1R3b2 w - - 0 1)

Blaine, Harry (Harley, Brian)

Morning Post, 1933

(First published on Sat Apr 15 1933)

8/8/8/5K2/4p2Q/4B1RP/7k/1R3b2

#2

6 + 3

15290 Harley Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Bxh3+
      • 2.Qxh3#
  • Tries
    • 1.Rg1?
      • threat
        • 2.Qg3#
      • 1...Bg2
        • 2.Bf4#
      • 1...Bxh3+!
    • 1.Rg4?
      • 1...Bxh3
        • 2.Bf4#
        • 2.Qg3#
      • 1...Be2
        • 2.Bf4#
        • 2.Qg3#
      • 1...Bg2
        • 2.Bf4#
        • 2.Qg3#
      • 1...Bd3
        • 2.Bf4#
        • 2.Qg3#
      • 1...Bc4
        • 2.Bf4#
        • 2.Qg3#
      • 1...Bb5
        • 2.Bf4#
        • 2.Qg3#
      • 1...Ba6
        • 2.Bf4#
        • 2.Qg3#
      • 1...Kh1!
    • 1.Qg4?
      • 1...Bxh3
        • 2.Rxh3#
        • 2.Qxh3#
      • 1...Be2
        • 2.Rg2#
      • 1...Bg2
        • 2.Rxg2#
      • 1...Bd3
        • 2.Rg2#
      • 1...Bc4
        • 2.Rg2#
      • 1...Bb5
        • 2.Rg2#
      • 1...Ba6
        • 2.Rg2#
      • 1...Kh1!
  • Keys
    • 1.Qf4!
      • 1...Bxh3+
        • 2.Rg4#
      • 1...Kh1
        • 2.Rg1#
      • 1...Be2
        • 2.Qf2#
      • 1...Bg2
        • 2.Rf3#
      • 1...Bd3
        • 2.Qf2#
      • 1...Bc4
        • 2.Qf2#
      • 1...Bb5
        • 2.Qf2#
      • 1...Ba6
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • B(a);CHECK,OGATE,P_SPINB(a),XP(D)::QAR1(E),XB(a)
  • Tries
    • Try
      • R(C);
      • Threat
        • QAB1(E)
      • Vars
        • B(a);::B(B)
      • Refutation
        • B(a);CHECK,P_SPINB(a),XP(D)
    • Try
      • R(C);
      • Refutation
        • K(b);P-FLIGHT,P_SPINB(a)
    • Try
      • Q(E);
      • Vars
        • B(a);N_GUARD::R1(C)
        • B(a);N_GUARD::R1(C),XB(a)
      • Refutation
        • K(b);P-FLIGHT,P_SPINB(a)
  • Actual
    • Q(E);
    • Vars
      • B(a);CHECK,SBLOCK,XP(D)::QAB(E)+R(C)
      • K(b);P-FLIGHT,P_SPINB(a)::R1(C)
      • B(a);N_GUARD::QAR2(E)
      • B(a);SBLOCK::QAB(E)+R(C)
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