MESON Chess Problem Database

Problem Display
PID: 18243 (8/5p2/6pQ/3K1k2/6N1/7P/8/8 w - - 0 1)

Hermanson, Halvar

Problemisten, 1954

8/5p2/6pQ/3K1k2/6N1/7P/8/8

#2

4 + 3

3295 Einfuhrung in die Welt des Schachproblem 1984
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...g5
      • 2.Qf6#
    • 1...f6
      • 2.Se3#
  • Tries
    • 1.Qc1?
      • 1...f6
        • 2.Sh6#
      • 1...g5!
    • 1.Qd2?
      • 1...f6
        • 2.Sh6#
      • 1...g5!
    • 1.h4?
      • threat
        • 2.Qg5#
      • 1...g5
        • 2.Qxg5#
      • 1...f6
        • 2.Se3#
      • 1...Kxg4!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Qe5#
      • 1...g5
        • 2.Qe4#
      • 1...f6
        • 2.Sh6#

This anticipates 95049(1958), 272311(1980)

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATE::QAR1(D)
    • P(c);SBLOCK::S(B)
  • Tries
    • Try
      • Q(D);
      • Vars
        • P(c);SBLOCK::S(B)
      • Refutation
        • P(b);
    • Try
      • Q(D);
      • Vars
        • P(c);SBLOCK::S(B)
      • Refutation
        • P(b);
    • Try
      • P(A);
      • Threat
        • QAR1(D)
      • Vars
        • P(b);::QAR1(D),XP(b)
        • P(c);SBLOCK::S(B)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
  • Actual
    • Q(D);
    • Threat
      • QAR1(D)
    • Vars
      • P(b);SBLOCK::QAB1(D)
      • P(c);SBLOCK::S(B)
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