MESON Chess Problem Database

Problem Display
PID: 203661 (7Q/4n1N1/8/2B1k3/8/1P3R2/2K5/8 w - - 0 1)

Giegold, Fritz Emil

Frankenpost, 1975

7Q/4n1N1/8/2B1k3/8/1P3R2/2K5/8

#2

6 + 2

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Kd3?
      • 1...Sf5
        • 2.Rxf5#
      • 1...Sd5
        • 2.Rf5#
        • 2.Qh5#
      • 1...Sc6
        • 2.Rf5#
        • 2.Qh5#
      • 1...Sg6
        • 2.Rf5#
        • 2.Qh5#
      • 1...Sc8
        • 2.Rf5#
        • 2.Qh5#
      • 1...Sg8
        • 2.Rf5#
        • 2.Qh5#
      • 1...Kd5!
    • 1.Rf5+?
      • 1...Ke4
        • 2.Qh1#
        • 2.Qh4#
      • 1...Sxf5!
    • 1.Qh4?
      • threat
        • 2.Qd4#
      • 1...Sf5
        • 2.Rxf5#
      • 1...Sc6
        • 2.Rf5#
      • 1...Kd5!
    • 1.Qh5+?
      • 1...Sf5
        • 2.Qxf5#
      • 1...Ke4!
  • Keys
    • 1.Qh1!
      • 1...Ke4
        • 2.Rf5#
      • 1...Kd5
        • 2.Rf5#
      • 1...Sf5
        • 2.Rxf5#
      • 1...Sd5
        • 2.Rf5#
      • 1...Sc6
        • 2.Rf5#
      • 1...Sg6
        • 2.Rf5#
      • 1...Sc8
        • 2.Rf5#
      • 1...Sg8
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • S(b);N_GUARD::R1(C),XS(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(C);CHECK
      • Refutation
        • S(b);XR(C)
    • Try
      • Q(F);
      • Threat
        • QAB1(F)
      • Vars
        • S(b);N_GUARD::R1(C),XS(b)
        • S(b);N_GUARD::R1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(F),XS(b)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(a);P-FLIGHT::QAB(F)+R(C)
      • K(a);P-FLIGHT::QAB(F)+R(C),DCHECK
      • S(b);N_GUARD::R1(C),XS(b)
      • S(b);N_GUARD::R1(C)
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