MESON Chess Problem Database

Problem Display
PID: 158876 (b4B1Q/2pp4/1Nk4K/2pN4/2P5/8/1R1R4/8 w - - 0 1)

Svrcek, Milan

Pat a Mat, 1984

b4B1Q/2pp4/1Nk4K/2pN4/2P5/8/1R1R4/8

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bb7
      • 2.Se7#
    • 1...cxb6
      • 2.Rxb6#
  • Tries
    • 1.Be7?
      • threat
        • 2.Qxa8#
      • 1...Kb7
        • 2.Qxa8#
      • 1...Bb7!
    • 1.Bg7?
      • 1...Kb7
        • 2.Qxa8#
      • 1...cxb6
        • 2.Rxb6#
      • 1...d6
        • 2.Qxa8#
      • 1...Bb7
        • 2.Se7#
      • 1...Kd6!
    • 1.Qg7?
      • 1...cxb6
        • 2.Rxb6#
      • 1...d6
        • 2.Qxc7#
      • 1...Bb7
        • 2.Se7#
        • 2.Qxd7#
      • 1...Kb7!
    • 1.Qh7?
      • 1...cxb6
        • 2.Rxb6#
      • 1...d6
        • 2.Qxc7#
      • 1...Bb7
        • 2.Se7#
        • 2.Qxd7#
      • 1...Kb7!
  • Keys
    • 1.Bd6!
      • 1...Kxd6
        • 2.Qf6#
      • 1...Kb7
        • 2.Qxa8#
      • 1...cxb6
        • 2.Rxb6#
      • 1...cxd6
        • 2.Qxa8#
        • 2.Qc8#
      • 1...Bb7
        • 2.Se7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(e);SBLOCK::S(D)
    • P(c);OGATE,XS(E)::R1(A),XP(c)
  • Tries
    • Try
      • B(G);
      • Threat
        • QAB(H),XB(e)
      • Vars
        • K(b);S_FLIGHT::QAB1(H),XB(e)
      • Refutation
        • B(e);
    • Try
      • B(G);
      • Vars
        • K(b);S_FLIGHT::QAB1(H),XB(e)
        • P(c);OGATE,XS(E)::R1(A),XP(c)
        • P(d);SBLOCK::QAB(H),XB(e)
        • B(e);SBLOCK::S(D)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(H);
      • Vars
        • P(c);OGATE,XS(E)::R1(A),XP(c)
        • P(d);OGATE::QAR1(H),XP(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(H);
      • Vars
        • P(c);OGATE,XS(E)::R1(A),XP(c)
        • P(d);OGATE::QAR1(H),XP(c)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(G);
    • Vars
      • K(b);OGATEB,P-FLIGHT,XB(G)::QAR2(H)
      • K(b);S_FLIGHT::QAB1(H),XB(e)
      • P(c);OGATE,XS(E)::R1(A),XP(c)
      • B(e);SBLOCK::S(D)
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