MESON Chess Problem Database

Problem Display
PID: 193622 (QN6/n1pp3n/1N1k1p2/1p1P1K2/4P3/4B3/8/8 w - - 0 1)

Phelps, Francis Bradley

Pittsburgh Gazette-Times, 1915

QN6/n1pp3n/1N1k1p2/1p1P1K2/4P3/4B3/8/8

#2

7 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Sc8#
    • 1...Sc8
      • 2.Sxc8#
  • Tries
    • 1.Qxa7?
      • threat
        • 2.Sc8#
      • 1...cxb6
        • 2.Qxd7#
      • 1...Ke7!
  • Keys
    • 1.Sc6!
      • 1...Sxc6
        • 2.Sc8#
      • 1...cxb6
        • 2.Qb8#
      • 1...dxc6
        • 2.Qd8#
      • 1...Sc8
        • 2.Sxc8#
      • 1...Sg5
        • 2.Qf8#
      • 1...Sf8
        • 2.Qxf8#
      • 1...b4
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD::S(E)
    • S(d);N_GUARD::S(E),XS(d)
  • Tries
    • Try
      • Q(F);XS(d)
      • Threat
        • S(E)
      • Vars
        • P(e);OGATE,XS(E)::QAR1(F),XP(f)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(G);
    • Vars
      • S(d);N_GUARD,XS(G)::S(E)
      • P(e);OGATEB,XS(E)::QAB(F)
      • P(f);OGATEB,XS(G)::QAR2(F)
      • S(d);N_GUARD::S(E),XS(d)
      • S(g);N_GUARD::QAB(F)
      • S(g);N_GUARD::QAB(F),XS(g)
      • P(a);N_GUARD::S(E)
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