MESON Chess Problem Database

Problem Display
PID: 207981 (7B/R7/Q7/2Pk4/2N5/8/4K3/8 w - - 0 1)

Uhler, Ekkehard

Badische Neueste Nachrichten, 1980

7B/R7/Q7/2Pk4/2N5/8/4K3/8

#2

6 + 1

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Se3+?
      • 1...Ke4
        • 2.Qc4#
        • 2.Qa4#
      • 1...Kxc5!
    • 1.Sd6?
      • 1...Ke6
        • 2.Qc4#
        • 2.Qa2#
      • 1...Kxc5!
    • 1.Rb7?
      • 1...Kxc5
        • 2.Qb5#
      • 1...Ke4!
    • 1.Rf7?
      • 1...Ke4
        • 2.Qb7#
        • 2.Qc6#
        • 2.Qe6#
        • 2.Qa8#
      • 1...Kxc5!
    • 1.Qb5?
      • 1...Ke6
        • 2.Qd7#
      • 1...Ke4!
    • 1.Qd6+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kxc4!
  • Keys
    • 1.Qa4!
      • 1...Ke4
        • 2.Se3#
      • 1...Kxc5
        • 2.Ra5#
      • 1...Ke6
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • S(B);
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • R(E);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(C)::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
  • Actual
    • Q(D);
    • Vars
      • K(a);S_FLIGHT::QAR(D)+S(B)
      • K(a);OGATEB,P-FLIGHT,XP(C)::R(E)
      • K(a);S_FLIGHT::QAB1(D)
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