MESON Chess Problem Database

Problem Display
PID: 143821 (5Q2/5K2/8/8/8/1p6/p1N3R1/r1k5 w - - 0 1)

Berhausen, Fritz

Chemnitzer Tageblatt, 1928

(First published on Sun Apr 1 1928)

5Q2/5K2/8/8/8/1p6/p1N3R1/r1k5

#2

4 + 4

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Tries
    • 1.Qh6+?
      • 1...Kb1
        • 2.Sa3#
      • 1...Kd1
        • 2.Qd2#
        • 2.Qh1#
      • 1...Kb2!
    • 1.Qh8?
      • threat
        • 2.Qxa1#
      • 1...Kb1
        • 2.Qxa1#
      • 1...Kd1
        • 2.Qxa1#
        • 2.Qh1#
      • 1...b2
        • 2.Qh1#
      • 1...Rb1!
  • Keys
    • 1.Qc5!
      • 1...Kb1
        • 2.Sa3#
      • 1...Kd1
        • 2.Qg1#
      • 1...Kb2
        • 2.Sa3#
      • 1...bxc2
        • 2.Qxc2#
      • 1...Rb1
        • 2.Se3#
      • 1...b2
        • 2.Qg1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);P-FLIGHT::S(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(D);
      • Threat
        • QAR2(D),XR(a)
      • Vars
        • K(b);P-FLIGHT::QAR1(D),XR(a)
        • P(d);SBLOCK::QAR(D)
      • Refutation
        • R(a);
  • Actual
    • Q(D);
    • Vars
      • K(b);P-FLIGHT::S(A)
      • K(b);P-FLIGHT::QAR(D)
      • K(b);S_FLIGHT::R(B)+S(A)
      • P(d);OGATE,P_SPINP(d),XS(A)::QAR1(D),XP(d)
      • R(a);SBLOCK::QAR(D)+S(A)
      • P(d);SBLOCK::QAR(D)
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