MESON Chess Problem Database

Problem Display
PID: 231731 (8/8/8/8/6Q1/5P1K/4NpP1/7k w - - 0 1)

Lindgren, Frithiof

Die Schwalbe, 1929

8/8/8/8/6Q1/5P1K/4NpP1/7k

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Kh4?
      • threat
        • 2.Qh3#
      • 1...Kh2
        • 2.Qh3#
      • 1...f1S!
  • Keys
    • 1.Qd4!
      • 1...f1Q
        • 2.Sg3#
      • 1...f1S
        • 2.Qg1#
      • 1...f1B
        • 2.Sg3#
        • 2.Qg1#
      • 1...f1R
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • QAR2(E)
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • P(b);
  • Actual
    • Q(E);
    • Vars
      • P(b);P_PINP(B)::S(A)
      • P(b);OGATE::QAR1(E)
      • P(b);::S(A)
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