MESON Chess Problem Database

Problem Display
PID: 68831 (K3B2B/2N1n3/2N5/3R4/1Pk5/3n4/2P5/5b2 w - - 0 1)

Gavriliv, Evgeni M

3rd HM., Hlas l'udu, 1989

K3B2B/2N1n3/2N5/3R4/1Pk5/3n4/2P5/5b2

#2

8 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Rc5#
    • 1...Se1
      • 2.Rc5#
    • 1...Sb2
      • 2.Rc5#
    • 1...Sf2
      • 2.Rc5#
    • 1...Sxb4
      • 2.Sa5#
    • 1...Sf4
      • 2.Rc5#
    • 1...Sc5
      • 2.Rxc5#
    • 1...Se5
      • 2.Rc5#
  • Tries
    • 1.Rb5?
      • threat
        • 2.Sa5#
      • 1...Sxc6
        • 2.Bf7#
      • 1...Se5
        • 2.Rc5#
      • 1...Bg2!
  • Keys
    • 1.Bf7!
      • threat
        • 2.Rc5#
      • 1...Sxb4
        • 2.Sa5#
      • 1...Sxd5
        • 2.Bxd5#
      • 1...Sxc6
        • 2.Rb5#
      • 1...Sc5
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • S(b);N_GUARD::R1(C)
    • S(b);SBLOCK,XP(B)::S(D)
    • S(b);N_GUARD::R1(C),XS(b)
  • Tries
    • Try
      • R(C);
      • Threat
        • S(D)
      • Vars
        • S(d);N_GUARD,XS(D)::B(G)
        • S(b);N_GUARD::R1(C)
      • Refutation
        • B(a);P_PINS(D)
  • Actual
    • B(G);
    • Threat
      • B(G)+R(C),DCHECK
    • Vars
      • S(b);SBLOCK,XP(B)::S(D)
      • S(d);OGATE,P_SPINS(d),XR(C)::B(G),XS(d)
      • S(d);N_GUARD,XS(D)::B(G)+R(C)
      • S(b);::B(G)+R(C),DCHECK,XS(b)
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