MESON Chess Problem Database

Problem Display
PID: 120946 (8/kP3R2/4p3/3Nn3/K7/8/7B/8 w - - 0 1)

Sobek, Karel

Zemedelske noviny, 1966

8/kP3R2/4p3/3Nn3/K7/8/7B/8

#2

5 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ka6
      • 2.b8S#
  • Tries
    • 1.Bg1+?
      • 1...Ka6
        • 2.Sb4#
        • 2.b8S#
      • 1...Kb8!
    • 1.Bxe5?
      • 1...Ka6
        • 2.b8S#
      • 1...exd5!
    • 1.b8Q+?
      • 1...Ka6
        • 2.Sb4#
        • 2.Sc7#
        • 2.Ra7#
        • 2.Qa7#
        • 2.Qb5#
        • 2.Qb6#
        • 2.Qb7#
        • 2.Qa8#
        • 2.Qc8#
      • 1...Kxb8!
  • Keys
    • 1.Sb4!
      • 1...Kb6
        • 2.Bg1#
      • 1...Kb8
        • 2.Sc6#
      • 1...Sxf7
        • 2.b8Q#
      • 1...Sd3
        • 2.b8Q#
        • 2.b8R#
      • 1...Sf3
        • 2.b8Q#
        • 2.b8R#
      • 1...Sc4
        • 2.b8Q#
        • 2.b8R#
      • 1...Sg4
        • 2.b8Q#
        • 2.b8R#
      • 1...Sc6
        • 2.b8Q#
      • 1...Sg6
        • 2.b8Q#
      • 1...Sd7
        • 2.b8Q#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • K(c);P-FLIGHT::P=S
  • Tries
    • Try
      • B(A);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(A);XS(a)
      • Vars
        • K(c);P-FLIGHT::P=S
      • Refutation
        • P(b);XS(C)
    • Try
      • P(D);CHECK
      • Refutation
        • K(c);P_SPINS(a),S_FLIGHT,XQ(D)
  • Actual
    • S(C);
    • Vars
      • K(c);S_FLIGHT::B(A)
      • K(c);P_SPINS(a),S_FLIGHT::S(C)
      • S(a);XR(E)::P=Q
      • S(a);::P=Q
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