MESON Chess Problem Database

Problem Display
PID: 151900 (8/b5p1/8/3Np1K1/nr2k3/1p3p2/p7/n1QR1B2 w - - 0 1)

Harley, Brian

Morning Post, 1919

(First published on Mon May 5 1919)

8/b5p1/8/3Np1K1/nr2k3/1p3p2/p7/n1QR1B2

#2

5 + 10

15290 Harley Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.Qe3#
      • 2.Qc4#
    • 1...Be3+
      • 2.Qxe3#
    • 1...Bb8
      • 2.Qe3#
    • 1...Sb2
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Sc5
      • 2.Sc3#
      • 2.Qe3#
    • 1...Sb6
      • 2.Sc3#
      • 2.Qe3#
    • 1...f2
      • 2.Bg2#
    • 1...g6
      • 2.Sf6#
  • Tries
    • 1.Bd3+?
      • 1...Kd4
        • 2.Bb1#
        • 2.Bf5#
        • 2.Bg6#
        • 2.Bh7#
      • 1...Kxd5!
    • 1.Qc4+?
      • 1...Bd4
        • 2.Bd3#
        • 2.Re1#
      • 1...Rxc4!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qg6#
      • 1...Be3+
        • 2.Sf4#
      • 1...f2
        • 2.Bg2#
      • 1...Rd4
        • 2.Re1#
      • 1...Rb6
        • 2.Qc4#
      • 1...Bd4
        • 2.Bd3#
      • 1...g6
        • 2.Qxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(i);CHECK,N_GUARD::QAR1(A),XB(i)
    • B(i);N_GUARD::QAR1(A)
    • S(e);N_GUARD::S(D)
    • S(e);N_GUARD::S(D),XS(e)
    • P(d);OGATEB::B(C)
    • P(j);N_GUARD::S(D)
  • Tries
    • Try
      • B(C);CHECK
      • Refutation
        • K(g);S_FLIGHT,XS(D)
    • Try
      • Q(A);CHECK
      • Refutation
        • R(f);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • B(i);CHECK,SBLOCK::QAB(A)+S(D)
      • P(d);OGATEB::B(C)
      • R(f);SBLOCK,S_CUTB(i)::R(B)
      • R(f);N_GUARD,S_CUTB(i)::QAR2(A)
      • B(i);SBLOCK::B(C)
      • P(j);::QAB(A),XP(j)
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