MESON Chess Problem Database

Problem Display
PID: 254478 (8/1k2KN2/1B2B3/4N3/8/8/8/1R6 w - - 0 1)

den Broeder, G

Schakend Nederland, 1978

8/1k2KN2/1B2B3/4N3/8/8/8/1R6

#2

6 + 1

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ka6
      • 2.Bc8#
  • Tries
    • 1.Sc6?
      • 1...Ka6
        • 2.Bc8#
      • 1...Kxc6
        • 2.Sd8#
      • 1...Ka8!
    • 1.Bc5+?
      • 1...Kc7
        • 2.Bd6#
      • 1...Ka8
        • 2.Bd5#
      • 1...Ka6!
  • Keys
    • 1.Sd7!
      • 1...Ka6
        • 2.Sc5#
      • 1...Kc6
        • 2.Sd8#
      • 1...Ka8
        • 2.Bd5#
      • 1...Kc8
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,S_FLIGHT::B(D)
  • Tries
    • Try
      • S(B);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::B(D)
        • K(a);N_GUARD,S_FLIGHT,XS(B)::S(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(C);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT::B(C)
        • K(a);N_GUARD,S_FLIGHT::B(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::S(B)
      • K(a);N_GUARD,S_FLIGHT::S(F)
      • K(a);N_GUARD,S_FLIGHT::B(D)
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