MESON Chess Problem Database

Problem Display
PID: 247652 (2B5/5p1K/3Qpp2/3N3n/4k3/4P3/n1P4N/8 w - - 0 1)

Hersom, Donald H

British Chess Magazine, 1932

2B5/5p1K/3Qpp2/3N3n/4k3/4P3/n1P4N/8

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...exd5
      • 2.Qe7#
  • Tries
    • 1.Se7?
      • threat
        • 2.Qd4#
      • 1...e5
        • 2.Qd3#
      • 1...Kxe3!
  • Keys
    • 1.Qc5!
      • 1...Ke5
        • 2.Sc3#
      • 1...Kf5
        • 2.Sc3#
      • 1...exd5
        • 2.Qd4#
        • 2.Qe7#
      • 1...Sc1
        • 2.Sc3#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Sb4
        • 2.Sc3#
      • 1...Sg3
        • 2.Sxf6#
      • 1...Sf4
        • 2.Sxf6#
      • 1...Sg7
        • 2.Sxf6#
      • 1...e5
        • 2.Qc4#
      • 1...f5
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 1
  • Sets
    • P(d);OGATEB,SBLOCK,XS(D)::QAR(E)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(E)
      • Vars
        • P(d);SBLOCK::QAB1(E)
      • Refutation
        • K(b);P-FLIGHT,XP(C)
  • Actual
    • Q(E);
    • Vars
      • K(b);P-FLIGHT::QAR(E)+S(D)
      • K(b);P_SPINP(d),S_FLIGHT::QAR(E)+S(D)
      • S(a);N_GUARD::S(D)
      • S(a);N_GUARD::S(D),XS(a)
      • S(c);N_GUARD::S(D),XP(e)
      • P(d);SBLOCK::QAR2(E)
      • P(e);SBLOCK::QAR1(E)
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