MESON Chess Problem Database

Problem Display
PID: 151458 (6Q1/2N5/1pp1N3/2p2pn1/4kP1p/3p4/3B4/5KR1 w - - 0 1)

Perry, N

Hampstead and Highgate Express, 1897

(First published on Fri Jul 2 1897)

6Q1/2N5/1pp1N3/2p2pn1/4kP1p/3p4/3B4/5KR1

#2

7 + 8

14867 BCPS Library 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Sxg5#
    • 1...Sh3
      • 2.Qg2#
    • 1...Sf7
      • 2.Qg2#
    • 1...Sh7
      • 2.Qg2#
  • Tries
    • 1.Qxg5?
      • threat
        • 2.Qg2#
      • 1...Kf3
        • 2.Qg2#
      • 1...h3!
    • 1.Qa8?
      • threat
        • 2.Qxc6#
      • 1...Kf3
        • 2.Sxg5#
      • 1...Sxe6!
    • 1.Qe8?
      • threat
        • 2.Qxc6#
      • 1...Kf3
        • 2.Sxg5#
      • 1...Sxe6!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sxg5#
      • 1...Kf3
        • 2.Sxg5#
      • 1...Kd5
        • 2.Sxg5#
      • 1...Sxe6
        • 2.Qg2#
      • 1...cxb5
        • 2.Qa8#
      • 1...Sf3
        • 2.Sc3#
      • 1...Sh3
        • 2.Qg2#
      • 1...Sf7
        • 2.Qg2#
      • 1...Sh7
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::S(E),XS(f)
    • S(f);OGATE::QAB(G)
  • Tries
    • Try
      • Q(G);XS(f)
      • Threat
        • QAB(G)
      • Vars
        • K(b);S_FLIGHT::QAB1(G)
      • Refutation
        • P(c);
    • Try
      • Q(G);P_PINP(h)
      • Threat
        • QAB(G),XP(h)
      • Vars
        • K(b);S_FLIGHT::S(E),XS(f)
      • Refutation
        • S(f);XS(E)
    • Try
      • Q(G);
      • Threat
        • QAB(G),XP(h)
      • Vars
        • K(b);S_FLIGHT::S(E),XS(f)
      • Refutation
        • S(f);P_SPINS(f),XS(E)
  • Actual
    • S(F);
    • Threat
      • S(E),XS(f)
    • Vars
      • K(b);S_FLIGHT::S(E),XS(f)
      • K(b);S_FLIGHT::QAB(G)+S(E),XS(f)
      • S(f);OGATE,XS(E)::QAB(G)
      • P(h);OGATEB,XS(F)::QAB(G)
      • S(f);SBLOCK::S(F)
      • S(f);OGATE::QAB(G)
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