MESON Chess Problem Database

Problem Display
PID: 211434 (8/5N2/8/6N1/7k/5Qp1/8/6K1 w - - 0 1)

Hultberg, Gustav Herbert

Land og Folk, 1976

8/5N2/8/6N1/7k/5Qp1/8/6K1

#2

4 + 2

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...g2
      • 2.Qh3#
  • Tries
    • 1.Sh3?
      • 1...Kxh3
        • 2.Qh5#
      • 1...g2!
    • 1.Se4?
      • 1...Kh3
        • 2.Qh5#
        • 2.Qxg3#
      • 1...g2!
    • 1.Se6?
      • 1...Kh3
        • 2.Qh5#
      • 1...g2!
    • 1.Sh7?
      • 1...Kh3
        • 2.Qh5#
      • 1...g2!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Sf3#
        • 2.Qh3#
      • 1...Kh5
        • 2.Sf3#
      • 1...g2
        • 2.Qh3#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATE::QAR1(B)
  • Tries
    • Try
      • S(C);
      • Vars
        • K(b);P-FLIGHT,P_SPINP(a),XS(C)::QAR2(B)
      • Refutation
        • P(a);
    • Try
      • S(C);
      • Refutation
        • P(a);
    • Try
      • S(C);
      • Vars
        • K(b);P-FLIGHT,P_SPINP(a)::QAR2(B)
      • Refutation
        • P(a);
    • Try
      • S(C);
      • Vars
        • K(b);P-FLIGHT,P_SPINP(a)::QAR2(B)
      • Refutation
        • P(a);
  • Actual
    • Q(B);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);P-FLIGHT::QAR(B)+S(C)
      • P(a);::QAR1(B)
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