MESON Chess Problem Database

Problem Display
PID: 208217 (8/8/8/5p2/5K2/Q5NR/3p3P/Nk6 w - - 0 1)

Hultberg, Gustav Herbert

Deutsche Schachblatter, 1989

8/8/8/5p2/5K2/Q5NR/3p3P/Nk6

#2

6 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sf1?
      • threat
        • 2.Sxd2#
        • 2.Rb3#
      • 1...d1S
        • 2.Sd2#
      • 1...d1B
        • 2.Sd2#
      • 1...d1R
        • 2.Rb3#
      • 1...d1Q!
    • 1.Se2?
      • threat
        • 2.Sc3#
        • 2.Rb3#
      • 1...d1Q
        • 2.Sc3#
      • 1...d1B
        • 2.Sc3#
      • 1...d1S!
    • 1.Qa2+?
      • 1...Kc1
        • 2.Qc2#
      • 1...Kxa2!
    • 1.Qb3+?
      • 1...Kc1
        • 2.Se2#
        • 2.Qc2#
      • 1...Kxa1!
  • Keys
    • 1.Se4!
      • threat
        • 2.Sxd2#
        • 2.Sc3#
        • 2.Rb3#
      • 1...fxe4
        • 2.Rb3#
      • 1...d1Q
        • 2.Sc3#
      • 1...d1S
        • 2.Sd2#
      • 1...d1B
        • 2.Sd2#
        • 2.Sc3#
      • 1...d1R
        • 2.Sc3#
        • 2.Rb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::S(D)
        • P(b);::R(E)
      • Refutation
        • P(b);
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::S(D)
      • Refutation
        • P(b);
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);P-FLIGHT,XS(A)
  • Actual
    • S(D);
    • Threat
      • DUALS(3)
    • Vars
      • P(c);XS(D)::R(E)
      • P(b);::S(D)
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