MESON Chess Problem Database

Problem Display
PID: 54968 (8/8/n4B2/3P4/N3k3/3rNpK1/B1P5/4R3 w - - 0 1)

Morse, Christopher Jeremy

Problem Observer, 2004

8/8/n4B2/3P4/N3k3/3rNpK1/B1P5/4R3

#2

8 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Sc3#
    • 1...Rd2
      • 2.Sc3#
    • 1...Rc3
      • 2.Sxc3#
    • 1...Rd4
      • 2.Sc3#
    • 1...Rxd5
      • 2.Sc3#
      • 2.Bxd5#
    • 1...Sb4
      • 2.Sc5#
    • 1...Sc5
      • 2.Sxc5#
    • 1...Sc7
      • 2.Sc5#
    • 1...Sb8
      • 2.Sc5#
  • Tries
    • 1.Sf5+?
      • 1...Re3
        • 2.Sd6#
      • 1...Kxf5!
  • Keys
    • 1.Bb1!
      • threat
        • 2.cxd3#
      • 1...Rxe3
        • 2.c4#
      • 1...Rxd5
        • 2.Sc3#
      • 1...Rd1
        • 2.Sc3#
      • 1...Rd2
        • 2.Sc3#
      • 1...Ra3
        • 2.c3#
      • 1...Rb3
        • 2.cxb3#
      • 1...Rc3
        • 2.Sxc3#
      • 1...Rd4
        • 2.Sc3#
      • 1...Sb4
        • 2.Sc5#
      • 1...Sc5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(a);N_GUARD::S(F)
    • R(a);N_GUARD::S(F),XR(a)
    • S(d);N_GUARD::S(F)
    • S(d);N_GUARD::S(F),XS(d)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • R(a);P_SPINR(a)::S(D)
      • Refutation
        • K(c);S_FLIGHT,XS(D)
  • Actual
    • B(B);
    • Threat
      • P(C),XR(a)
    • Vars
      • R(a);P_SPINR(a),XS(D)::B(B)+P(C)
      • R(a);N_GUARD,XP(G)::S(F)
      • R(a);N_GUARD::S(F)
      • R(a);::B(B)+P(C)
      • R(a);OGATE::B(B)+P(C),XR(a)
      • R(a);N_GUARD::S(F),XR(a)
      • S(d);N_GUARD::S(F)
      • S(d);N_GUARD::S(F),XS(d)
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