MESON Chess Problem Database

Problem Display
PID: 219438 (2K3R1/8/2N3p1/3k1nR1/P3N3/8/4P3/2B4Q w - - 0 1)

Ernst, Erich

Badische Neueste Nachrichten, 1978

2K3R1/8/2N3p1/3k1nR1/P3N3/8/4P3/2B4Q

#2

9 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qf3?
      • 1...Kc4
        • 2.Qd3#
      • 1...Ke6
        • 2.Qb3#
      • 1...Kxc6!
    • 1.Qd1+?
      • 1...Kc4
        • 2.Qd3#
      • 1...Kxe4
        • 2.Rg4#
        • 2.Qh1#
        • 2.Qd3#
      • 1...Ke6
        • 2.Qb3#
        • 2.Qd7#
      • 1...Kxc6!
    • 1.Qh3?
      • 1...Kc4
        • 2.Qd3#
      • 1...Kxe4
        • 2.Qg2#
        • 2.Qh1#
        • 2.Qd3#
        • 2.Qf3#
      • 1...Ke6
        • 2.Qb3#
      • 1...Kxc6!
  • Keys
    • 1.Qh7!
      • 1...Kc4
        • 2.Qf7#
      • 1...Kxe4
        • 2.Qh1#
      • 1...Kxc6
        • 2.Qb7#
      • 1...Ke6
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT::QAB1(B)
        • K(a);N_SPINS(b),S_FLIGHT::QAB(B)
      • Refutation
        • K(a);N_SPINS(b),S_FLIGHT,XS(G)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);N_SPINS(b),S_FLIGHT,XS(G)
    • Try
      • Q(B);
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT::QAB1(B)
        • K(a);S_FLIGHT::QAB(B)
      • Refutation
        • K(a);N_SPINS(b),S_FLIGHT,XS(G)
  • Actual
    • Q(B);
    • Vars
      • K(a);N_SPINS(b),S_FLIGHT::QAB(B)
      • K(a);N_SPINS(b),OGATEB,S_FLIGHT,XS(E)::QAB(B)
      • K(a);N_SPINS(b),OGATEB,S_FLIGHT,XS(G)::QAB1(B)
      • K(a);N_SPINS(b),S_FLIGHT::QAB1(B)
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