MESON Chess Problem Database

Problem Display
PID: 152938 (8/1p6/1K6/6pB/6nb/6N1/6k1/2Q2R1R w - - 0 1)

Blaine, Harry (Harley, Brian)

Morning Post, 1934

(First published on Sat Jul 7 1934)

8/1p6/1K6/6pB/6nb/6N1/6k1/2Q2R1R

#2

6 + 5

15290 Harley Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.Rfg1#
  • Tries
    • 1.Bxg4?
      • 1...Bxg3
        • 2.Bf3#
        • 2.Bh3#
      • 1...Kxg3!
    • 1.Rf2+?
      • 1...Kxg3
        • 2.Qg1#
      • 1...Sxf2
        • 2.Qg1#
      • 1...Kxf2!
    • 1.Rf5?
      • threat
        • 2.Qg1#
      • 1...Kxg3
        • 2.Qg1#
      • 1...Sh2!
    • 1.Rf6?
      • threat
        • 2.Qg1#
      • 1...Kxg3
        • 2.Qg1#
      • 1...Sh2!
    • 1.Rf7?
      • threat
        • 2.Qg1#
      • 1...Kxg3
        • 2.Qg1#
      • 1...Sh2!
    • 1.Rf8?
      • threat
        • 2.Qg1#
      • 1...Kxg3
        • 2.Qg1#
      • 1...Sh2!
    • 1.Qb2+?
      • 1...Sf2
        • 2.Rfg1#
        • 2.Qxf2#
      • 1...Kxg3!
    • 1.Qd2+?
      • 1...Sf2
        • 2.Rfg1#
        • 2.Qxf2#
      • 1...Kxg3!
    • 1.Qe1?
      • 1...Bxg3
        • 2.Qe4#
      • 1...Sf2
        • 2.Rfg1#
        • 2.Qxf2#
      • 1...Se3
        • 2.Bf3#
        • 2.Rfg1#
        • 2.Qf2#
      • 1...Se5
        • 2.Rfg1#
        • 2.Qf2#
      • 1...Sf6
        • 2.Bf3#
        • 2.Rfg1#
        • 2.Qf2#
      • 1...Sh6
        • 2.Bf3#
        • 2.Rfg1#
        • 2.Qf2#
      • 1...Sh2!
    • 1.Qc2+?
      • 1...Sf2
        • 2.Rfg1#
        • 2.Qxf2#
      • 1...Kxg3!
    • 1.Qc6+?
      • 1...Kxg3
        • 2.Qf3#
      • 1...bxc6!
  • Keys
    • 1.Qc8!
      • 1...Kxg3
        • 2.Qxg4#
      • 1...Bxg3
        • 2.Qxb7#
      • 1...Sh2
        • 2.Rhg1#
      • 1...Sf2
        • 2.Rfg1#
      • 1...Se3
        • 2.Qh3#
      • 1...Se5
        • 2.Qh3#
      • 1...Sf6
        • 2.Qh3#
      • 1...Sh6
        • 2.Qh3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::R1(B)
  • Tries
    • Try
      • B(E);XS(b)
      • Refutation
        • K(a);P-FLIGHT,XS(D)
    • Try
      • R(B);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(D)::QAR2(A)
        • S(b);XR(B)::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,XR(B)
    • Try
      • R(B);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);P-FLIGHT,XS(D)::QAR2(A)
      • Refutation
        • S(b);
    • Try
      • R(B);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);P-FLIGHT,XS(D)::QAR2(A)
      • Refutation
        • S(b);
    • Try
      • R(B);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);P-FLIGHT,XS(D)::QAR2(A)
      • Refutation
        • S(b);
    • Try
      • R(B);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);P-FLIGHT,XS(D)::QAR2(A)
      • Refutation
        • S(b);
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT,XS(D)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT,XS(D)
    • Try
      • Q(A);
      • Vars
        • B(c);SBLOCK,XS(D)::QAB(A)
      • Refutation
        • S(b);
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT,XS(D)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(D)::QAR1(A)
      • Refutation
        • P(e);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(a);OGATEB,P-FLIGHT,XS(D)::QAR1(A),XS(b)
      • B(c);SBLOCK,XS(D)::QAB(A),XP(e)
      • S(b);SBLOCK::R1(C)
      • S(b);SBLOCK::R1(B)
      • S(b);OGATE::QAB1(A)
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