MESON Chess Problem Database

Problem Display
PID: 18006 (1B6/3p3R/K1k5/PR2b3/4p3/2N5/6B1/3r4 w - - 0 1)

Smedley, Don A

The Problemist, 1952

1B6/3p3R/K1k5/PR2b3/4p3/2N5/6B1/3r4

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...d6
      • 2.Rc7#
  • Tries
    • 1.Bxe4+?
      • 1...Rd5
        • 2.Bxd5#
      • 1...d5!
  • Keys
    • 1.Sxe4!
      • threat
        • 2.Rc5#
      • 1...Rc1
        • 2.Sd6#
      • 1...Rd5
        • 2.Rb6#
      • 1...Bd4
        • 2.Sd6#
      • 1...Bd6
        • 2.Sd2#
      • 1...d6
        • 2.Rc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(e);OGATE,SBLOCK::R1(F)
  • Tries
    • Try
      • B(A);CHECK,XP(b)
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::B(A),XR(a)
      • Refutation
        • P(e);P_SPINP(e)
  • Actual
    • S(B);XP(b)
    • Threat
      • R1(D)
    • Vars
      • R(a);N_GUARD::B(A)+S(B)
      • R(a);SBLOCK::R1(D)
      • B(c);S_CUTR(a)::B(A)+S(B)
      • B(c);S_CUTP(e)::B(A)+S(B)
      • P(e);OGATE::R1(F)
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