MESON Chess Problem Database

Problem Display
PID: 249655 (6bR/K2p4/8/p1P4Q/Pk1P4/2R5/1N2pp2/1N4b1 w - - 0 1)

Zipf, Volker

Schach, 1983

6bR/K2p4/8/p1P4Q/Pk1P4/2R5/1N2pp2/1N4b1

#2

9 + 7

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Rb8#
    • 1...Bb3
      • 2.Rb8#
    • 1...Be6
      • 2.Rb8#
    • 1...Bf7
      • 2.Rb8#
    • 1...Bh7
      • 2.Rb8#
  • Tries
    • 1.Rb3+?
      • 1...Bxb3
        • 2.Rb8#
      • 1...Kxb3!
    • 1.Qf3?
      • threat
        • 2.Qb7#
      • 1...Bc4
        • 2.Rxc4#
      • 1...d5
        • 2.Rb3#
      • 1...Bd5!
    • 1.c6?
      • threat
        • 2.Qb5#
        • 2.Qc5#
      • 1...dxc6
        • 2.Qc5#
      • 1...Bc4
        • 2.Qc5#
      • 1...Bd5
        • 2.Rb8#
      • 1...d6
        • 2.Qb5#
      • 1...d5!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Rb3#
      • 1...Bxf7
        • 2.Rb8#
      • 1...d5
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • B(g);OGATE::R(I)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • B(g);OGATE,SBLOCK,XR(C)::R(I)
      • Refutation
        • K(d);P-FLIGHT,XR(C)
    • Try
      • Q(G);
      • Threat
        • QAR(G)
      • Vars
        • B(g);N_GUARD::R1(C),XB(g)
        • P(f);S_CUTB(g)::R1(C)
      • Refutation
        • B(g);
    • Try
      • P(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);XP(F)::QAB1(G)
        • B(g);::QAB1(G)
        • B(g);OGATE::R(I)
        • P(f);::QAR1(G)
      • Refutation
        • P(f);
  • Actual
    • Q(G);
    • Threat
      • R1(C)
    • Vars
      • B(g);OGATE,XQ(G)::R(I)
      • P(f);OGATE::QAR(G)
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