MESON Chess Problem Database

Problem Display
PID: 173200 (8/1n6/2r3R1/3k4/4NP1K/B3P3/2R5/5B1n w - - 0 1)

Morse, Christopher Jeremy

Problem Observer, 1977

8/1n6/2r3R1/3k4/4NP1K/B3P3/2R5/5B1n

#2

8 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rc3
      • 2.Sxc3#
    • 1...Ra6
      • 2.Sc3#
    • 1...Rb6
      • 2.Sc3#
    • 1...Sc5
      • 2.Sc3#
  • Keys
    • 1.Bg2!
      • threat
        • 2.Sd2#
        • 2.Sf2#
        • 2.Sg3#
        • 2.Sc5#
        • 2.Sg5#
        • 2.Sd6#
      • 1...Rxc2
        • 2.Sd2#
      • 1...Rxg6
        • 2.Sg5#
      • 1...Rc3
        • 2.Sd2#
        • 2.Sd6#
      • 1...Rf6
        • 2.Sg5#
      • 1...Rc4
        • 2.Sc3#
      • 1...Rc5
        • 2.Sd2#
        • 2.Sf2#
        • 2.Sg3#
        • 2.Sxc5#
        • 2.Sg5#
        • 2.Sd6#
      • 1...Rd6
        • 2.Sd2#
        • 2.Sf2#
        • 2.Sg3#
        • 2.Sc5#
        • 2.Sg5#
        • 2.Sxd6#
      • 1...Re6
        • 2.Sf6#
      • 1...Sf2
        • 2.Sxf2#
      • 1...Sg3
        • 2.Sxg3#
      • 1...Sc5
        • 2.Sxc5#
      • 1...Sd6
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 3
  • Sets
    • R(c);N_GUARD::S(E),XR(c)
    • R(c);N_GUARD::S(E)
    • S(d);S_CUTR(c)::S(E)
  • Actual
    • B(A);
    • Threat
      • DUALS(6)
    • Vars
      • R(c);XR(B)::B(A)+S(E)
      • R(c);XR(H)::B(A)+S(E)
      • R(c);::B(A)+S(E)
      • R(c);SBLOCK::B(A)+S(E),DCHECK
      • S(a);::B(A)+S(E),XS(a)
      • S(d);::B(A)+S(E),XS(d)
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