MESON Chess Problem Database

Problem Display
PID: 528 (bb6/4B1p1/3p4/6R1/3kP2R/1P6/3K4/8 w - - 0 1)

Ling, John Francis

The Observer, 1959

bb6/4B1p1/3p4/6R1/3kP2R/1P6/3K4/8

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Rxd5#
    • 1...d5
      • 2.e5#
    • 1...g6
      • 2.Bf6#
  • Keys
    • 1.Bf8!
      • threat
        • 2.Bxg7#
      • 1...Bd5
        • 2.Rxd5#
      • 1...d5
        • 2.e5#
      • 1...g6
        • 2.Bg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(d);N_GUARD::R1(E),XB(d)
    • P(b);SBLOCK,S_CUTB(d)::R(D)+P(C)
    • P(c);N_GUARD::B(F)
  • Actual
    • B(F);
    • Threat
      • B(F),XP(c)
    • Vars
      • B(d);N_GUARD::R1(E),XB(d)
      • P(b);SBLOCK,S_CUTB(d)::R(D)+P(C)
      • P(c);::B(F)
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