MESON Chess Problem Database

Problem Display
PID: 153225 (6R1/nPPK4/8/8/8/5N1k/8/8 w - - 0 1)

McDowell, Michael

3rd Comm., StrateGems 02. Miniature Ty., 2011

6R1/nPPK4/8/8/8/5N1k/8/8

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Kd6?
      • 1...Sc8+
        • 2.bxc8Q#
        • 2.bxc8B#
      • 1...Sc6
        • 2.c8Q#
        • 2.c8B#
      • 1...Sb5+!
    • 1.Ke7?
      • 1...Sc8+
        • 2.bxc8Q#
        • 2.bxc8B#
      • 1...Sb5
        • 2.c8Q#
        • 2.c8B#
      • 1...Sc6+!
    • 1.Kd8?
      • 1...Sb5
        • 2.c8Q#
        • 2.c8B#
      • 1...Sc8
        • 2.bxc8Q#
        • 2.bxc8B#
      • 1...Sc6+!
    • 1.c8Q?
      • 1...Sb5
        • 2.Kc6#
        • 2.Ke7#
        • 2.Kd8#
        • 2.Ke8#
      • 1...Sc6
        • 2.Kxc6#
        • 2.Kd6#
        • 2.Kc7#
        • 2.Ke8#
      • 1...Sxc8!
    • 1.c8B?
      • 1...Sb5
        • 2.Kc6#
        • 2.Ke7#
        • 2.Kd8#
        • 2.Ke8#
      • 1...Sc6
        • 2.Kxc6#
        • 2.Kd6#
        • 2.Kc7#
        • 2.Ke8#
      • 1...Sxc8!
  • Keys
    • 1.Ke8!
      • 1...Sb5
        • 2.c8Q#
        • 2.c8B#
      • 1...Sc6
        • 2.c8Q#
        • 2.c8B#
      • 1...Sc8
        • 2.bxc8Q#
        • 2.bxc8B#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • S(b);CHECK,OGATE::PXS(b)=Q
        • S(b);N_GUARD::P=Q
      • Refutation
        • S(b);CHECK
    • Try
      • K(D);P-FLIGHT
      • Vars
        • S(b);CHECK,OGATE::PXS(b)=Q
        • S(b);N_GUARD::P=Q
      • Refutation
        • S(b);CHECK
    • Try
      • K(D);P-FLIGHT
      • Vars
        • S(b);N_GUARD::P=Q
        • S(b);OGATE::PXS(b)=Q
      • Refutation
        • S(b);CHECK
    • Try
      • P(C);
      • Refutation
        • S(b);XQ(C)
    • Try
      • P(C);
      • Refutation
        • S(b);XB(C)
  • Actual
    • K(D);S_FLIGHT
    • Vars
      • S(b);N_GUARD::P=Q
      • S(b);OGATE::PXS(b)=Q
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