MESON Chess Problem Database

Problem Display
PID: 17159 (8/8/5p2/5R2/2pkp3/3p2p1/1P1P2Np/3Q1B1K w - - 0 1)

Harley, Brian

Bristol Times and Mirror, 1925

8/8/5p2/5R2/2pkp3/3p2p1/1P1P2Np/3Q1B1K

#2

7 + 7

887 Mate in Two Moves 1931
3147 Chess Problems: Introduction to an Art 1963
15290 Harley Scrapbook 2014
56 The Problemist 2015
5454 Near Snap 2016

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Qa4#
    • 1...e3
      • 2.Qg4#
  • Tries
    • 1.Se1?
      • 1...c3
        • 2.Qa4#
      • 1...e3
        • 2.Qg4#
      • 1...g2+!
    • 1.Sh4?
      • 1...c3
        • 2.Qa4#
      • 1...e3
        • 2.Qg4#
      • 1...g2+!
    • 1.Ra5?
      • 1...c3
        • 2.Qa4#
      • 1...e3
        • 2.Qg4#
      • 1...f5!
    • 1.Rb5?
      • 1...c3
        • 2.Qa4#
      • 1...e3
        • 2.Qg4#
      • 1...f5!
    • 1.Rh5?
      • 1...c3
        • 2.Qa4#
      • 1...e3
        • 2.Qg4#
      • 1...f5!
    • 1.Qh5?
      • threat
        • 2.Rd5#
      • 1...e3
        • 2.Rf4#
        • 2.Qg4#
        • 2.Qh4#
      • 1...c3!
    • 1.Qa1?
      • threat
        • 2.Qa7#
      • 1...c3
        • 2.Qa4#
      • 1...e3!
    • 1.Qc1?
      • threat
        • 2.Qc3#
      • 1...c3
        • 2.Qxc3#
      • 1...e3!
    • 1.Qe1?
      • threat
        • 2.Qe3#
      • 1...e3
        • 2.Qxe3#
      • 1...c3!
  • Keys
    • 1.Bxd3!
      • 1...Kxd3
        • 2.Rd5#
      • 1...cxd3
        • 2.Qa4#
      • 1...exd3
        • 2.Qg4#
      • 1...c3
        • 2.dxc3#
      • 1...e3
        • 2.dxe3#

This anticipates 157911(1974)

There are these versions: 71115

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(d);OGATEB::QAR(A)
    • P(f);OGATEB::QAR(A)
  • Tries
    • Try
      • S(F);
      • Vars
        • P(d);OGATEB::QAR(A)
        • P(f);OGATEB::QAR(A)
      • Refutation
        • P(c);CHECK
    • Try
      • S(F);
      • Vars
        • P(d);OGATEB::QAR(A)
        • P(f);OGATEB::QAR(A)
      • Refutation
        • P(c);CHECK
    • Try
      • R(G);
      • Vars
        • P(d);OGATEB::QAR(A)
        • P(f);OGATEB::QAR(A)
      • Refutation
        • P(g);
    • Try
      • R(G);
      • Vars
        • P(d);OGATEB::QAR(A)
        • P(f);OGATEB::QAR(A)
      • Refutation
        • P(g);
    • Try
      • R(G);
      • Vars
        • P(d);OGATEB::QAR(A)
        • P(f);OGATEB::QAR(A)
      • Refutation
        • P(g);
    • Try
      • Q(A);
      • Threat
        • R1(G)
      • Refutation
        • P(d);
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • P(d);OGATEB::QAR(A)
      • Refutation
        • P(f);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • P(d);::QAB1(A),XP(d)
      • Refutation
        • P(f);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • P(f);::QAB1(A),XP(f)
      • Refutation
        • P(d);
  • Actual
    • B(B);XP(b)
    • Vars
      • K(e);P-FLIGHT,XB(B)::R(G)
      • P(d);OGATEB,SBLOCK,XB(B)::QAR(A)
      • P(f);OGATEB,SBLOCK,XB(B)::QAR(A)
      • P(d);OGATE::P(E),XP(d)
      • P(f);OGATE::P(E),XP(f)
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