MESON Chess Problem Database

Problem Display
PID: 153184 (r7/1n6/8/B1p5/k7/2QB4/8/3K4 w - - 0 1)

Harley, Brian

Morning Post, 1937

(First published on Sat Apr 3 1937)

r7/1n6/8/B1p5/k7/2QB4/8/3K4

#2

4 + 4

15290 Harley Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Qb4#
  • Tries
    • 1.Kc2?
      • threat
        • 2.Qa1#
      • 1...Rxa5
        • 2.Qb3#
      • 1...c4
        • 2.Qb4#
      • 1...Sxa5!
    • 1.Qb3+?
      • 1...Kxa5
        • 2.Qb5#
      • 1...Kxb3!
    • 1.Qc4+?
      • 1...Kxa5
        • 2.Qb5#
      • 1...Ka3!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Qa2#
      • 1...Kxa5
        • 2.Qb5#
      • 1...Rxa5
        • 2.Bc2#
      • 1...Sxa5
        • 2.Bb5#
      • 1...c4
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(b);N_GUARD::QAR1(B)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • QAR(B)
      • Vars
        • R(d);SBLOCK,XB(D)::QAB1(B)
        • P(b);N_GUARD::QAR1(B)
      • Refutation
        • S(c);XB(D)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT,XB(D)::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT,XB(D)::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAR2(B)
    • Vars
      • K(a);P-FLIGHT,XB(D)::QAR1(B)
      • R(d);SBLOCK,XB(D)::B(C)
      • S(c);SBLOCK,XB(D)::B(C)
      • P(b);N_GUARD::QAR1(B)
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