MESON Chess Problem Database

Problem Display
PID: 208229 (3B4/3R4/3n2B1/N3P3/2Pk1p2/P2N4/2p3PQ/2K5 w - - 0 1)

Kohring, Rolf

Badische Neueste Nachrichten, 1986

3B4/3R4/3n2B1/N3P3/2Pk1p2/P2N4/2p3PQ/2K5

#2

11 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Kxc2?
      • threat
        • 2.Bb6#
        • 2.Qg1#
        • 2.Qxf4#
      • 1...f3
        • 2.Bb6#
        • 2.Qf4#
      • 1...Ke3!
    • 1.Qh4?
      • 1...Ke3
        • 2.Qf2#
      • 1...Kc3!
    • 1.exd6?
      • 1...Kc3
        • 2.Bf6#
        • 2.Qh8#
      • 1...f3
        • 2.Qe5#
      • 1...Ke3!
    • 1.e6?
      • 1...Kc3
        • 2.Bf6#
        • 2.Qh8#
      • 1...f3
        • 2.Qe5#
      • 1...Ke3!
  • Keys
    • 1.Sxf4!
      • 1...Kc3
        • 2.Se2#
      • 1...Ke3
        • 2.Bb6#
      • 1...Kc5
        • 2.Se6#
        • 2.Qg1#
      • 1...Kxe5
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);P-FLIGHT,XP(a)
      • Threat
        • DUALS(3)
      • Refutation
        • K(b);N_SPINS(d),S_FLIGHT
    • Try
      • Q(C);P_PINP(c)
      • Vars
        • K(b);N_SPINP(c),N_SPINS(d),S_FLIGHT::QAB1(C)
      • Refutation
        • K(b);N_SPINP(c),N_SPINS(d),S_FLIGHT
    • Try
      • P(H);XS(d)
      • Vars
        • P(c);OGATE::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(H);
      • Vars
        • P(c);OGATE::QAB1(C)
      • Refutation
        • K(b);N_SPINS(d),S_FLIGHT
  • Actual
    • S(E);XP(c)
    • Vars
      • K(b);N_SPINS(d),S_FLIGHT::S(E)
      • K(b);N_SPINS(d),S_FLIGHT::B(K)
      • K(b);N_SPINS(d),S_FLIGHT,XP(H)::S(G)
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