MESON Chess Problem Database

Problem Display
PID: 218298 (8/2K5/8/8/2k5/Q2N1P2/5P2/3B4 w - - 0 1)

Radisch, Fritz

Deutsche Schachzeitung, 1976

8/2K5/8/8/2k5/Q2N1P2/5P2/3B4

#2

6 + 1

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kb5
      • 2.Qa4#
  • Tries
    • 1.Sb2+?
      • 1...Kb5
        • 2.Be2#
      • 1...Kd5
        • 2.Qd6#
      • 1...Kd4!
    • 1.Sf4?
      • 1...Kb5
        • 2.Be2#
      • 1...Kd4!
    • 1.Se5+?
      • 1...Kb5
        • 2.Be2#
      • 1...Kd5
        • 2.Qd6#
      • 1...Kd4!
    • 1.Bc2?
      • threat
        • 2.Qc5#
      • 1...Kd4
        • 2.Qc5#
      • 1...Kb5
        • 2.Qa4#
      • 1...Kd5!
    • 1.Be2?
      • 1...Kd4
        • 2.Qc5#
      • 1...Kb5
        • 2.Sc1#
        • 2.Se1#
        • 2.Sb2#
        • 2.Sf4#
        • 2.Sc5#
        • 2.Se5#
      • 1...Kd5!
    • 1.Qb4+?
      • 1...Kd5
        • 2.Bb3#
        • 2.Qe4#
      • 1...Kxd3!
    • 1.Qa1?
      • 1...Kb5
        • 2.Qa4#
      • 1...Kd5
        • 2.Bb3#
      • 1...Kxd3!
  • Keys
    • 1.Qb2!
      • 1...Kxd3
        • 2.Be2#
      • 1...Kd5
        • 2.Bb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(a);S_FLIGHT::QAB1(C)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(a);S_FLIGHT::B(A)
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(D);
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(a);S_FLIGHT::B(A)
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(A);
      • Threat
        • QAR1(C)
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
        • K(a);S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • Q(C);
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
  • Actual
    • Q(C);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(D)::B(A)
      • K(a);S_FLIGHT::B(A)
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