MESON Chess Problem Database

Problem Display
PID: 273917 (7B/1B6/2R5/8/3pkPNN/7P/8/4K3 w - - 0 1)

Willemsens, Luis Cornelis

Probleemblad, 1952

7B/1B6/2R5/8/3pkPNN/7P/8/4K3

#2

8 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Sf6#
    • 1...d3
      • 2.Rc4#
  • Tries
    • 1.Kd2?
      • threat
        • 2.Rf6#
      • 1...Kd5
        • 2.Sf6#
      • 1...d3
        • 2.Rc4#
      • 1...Kxf4!
    • 1.Sg6?
      • 1...Kf3
        • 2.Rc3#
      • 1...Kd5
        • 2.Sf6#
      • 1...Kf5
        • 2.Rf6#
      • 1...d3
        • 2.Rc5#
      • 1...Kd3!
    • 1.Be5?
      • threat
        • 2.Rc3#
      • 1...Kd5
        • 2.Sf6#
      • 1...Kd3!
    • 1.Rg6+?
      • 1...Kxf4
        • 2.Be5#
      • 1...Kd3!
  • Keys
    • 1.Sg2!
      • 1...Kd3
        • 2.Sf2#
      • 1...Kf3
        • 2.Rc3#
      • 1...Kd5
        • 2.Sf6#
      • 1...Kf5
        • 2.Rf6#
      • 1...d3
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);N_GUARD,S_FLIGHT::S(D)
    • P(a);SBLOCK::B(G)+R(F),DCHECK
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • B(G)+R(F)
      • Vars
        • K(b);N_GUARD,S_FLIGHT::S(D)
        • P(a);::B(G)+R(F),DCHECK
      • Refutation
        • K(b);P-FLIGHT,XP(C)
    • Try
      • S(E);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::B(G)+R(F),DCHECK
        • K(b);N_GUARD,S_FLIGHT::S(D)
        • K(b);N_GUARD,S_FLIGHT::R1(F)
        • P(a);SBLOCK::B(G)+R(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(H);
      • Threat
        • B(G)+R(F)
      • Vars
        • K(b);N_GUARD,S_FLIGHT::S(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(F);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT,XP(C)::B(H)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(E);
    • Vars
      • K(b);N_GUARD,S_FLIGHT::S(D)
      • K(b);N_GUARD,S_FLIGHT::B(G)+R(F),DCHECK
      • K(b);N_GUARD,S_FLIGHT::R1(F)
      • P(a);SBLOCK::B(G)+R(F)
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