MESON Chess Problem Database

Problem Display
PID: 249031 (8/8/1p1Np1Q1/1P1kp3/2pbN3/1rp1p1K1/8/8 w - - 0 1)

Berhausen, Fritz

Die Schwalbe, 1929

8/8/1p1Np1Q1/1P1kp3/2pbN3/1rp1p1K1/8/8

#2

5 + 9

SOLUTION

  • SOUND
  • Tries
    • 1.Qe8?
      • threat
        • 2.Qc6#
        • 2.Qa8#
      • 1...Rxb5
        • 2.Qa8#
      • 1...Ra3
        • 2.Qc6#
      • 1...Bc5!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Se7#
      • 1...Kxe4
        • 2.Se7#
      • 1...exf5
        • 2.Qc6#
      • 1...Bc5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);XP(C)::QAB(E)
        • R(a);::QAB1(E)
      • Refutation
        • B(e);
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(f);S_FLIGHT,XS(B)::QAB(E)+S(D)
      • P(i);OGATE,XS(D)::QAB1(E)
      • B(e);SBLOCK::S(B)
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