MESON Chess Problem Database

Problem Display
PID: 23833 (8/N2N3n/B2pp3/3kP3/K1R5/2prn1p1/7Q/7b w - - 0 1)

Krizhanivsky, Vasil Viktorovich

1st HM., L'Italia Scacchistica, 1997

8/N2N3n/B2pp3/3kP3/K1R5/2prn1p1/7Q/7b

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...g2
      • 2.Sb6#
  • Tries
    • 1.Qxg3?
      • threat
        • 2.Sb6#
      • 1...Sxc4
        • 2.Qxd3#
      • 1...dxe5
        • 2.Qxe5#
      • 1...Rd4!
    • 1.Qa2?
      • threat
        • 2.Bb7#
      • 1...Sxc4
        • 2.Qxc4#
      • 1...dxe5!
    • 1.Qe2?
      • threat
        • 2.Qxd3#
      • 1...Rd4
        • 2.Bb7#
      • 1...Rd1
        • 2.Bb7#
      • 1...Rd2
        • 2.Bb7#
      • 1...Sc2
        • 2.Sb6#
      • 1...Sf5
        • 2.Sb6#
      • 1...Be4!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sc7#
      • 1...Kxc4
        • 2.Qa2#
      • 1...Sxc4
        • 2.Bb7#
      • 1...dxe5
        • 2.Sb6#
      • 1...Rd4
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(e);::S(G)
  • Tries
    • Try
      • Q(A);XP(e)
      • Threat
        • S(G)
      • Vars
        • S(d);OGATE,XR(C)::QAR2(A),XR(c)
        • P(g);OGATE,XP(D)::QAR1(A),XP(g)
      • Refutation
        • R(c);P_PINR(C)
    • Try
      • Q(A);
      • Threat
        • B(E)
      • Vars
        • S(d);OGATE,P_SPINS(d),XR(C)::QAB1(A),XS(d)
      • Refutation
        • P(g);XP(D)
    • Try
      • Q(A);
      • Threat
        • QAR2(A),XR(c)
      • Vars
        • R(c);P_PINR(C)::B(E)
        • R(c);::B(E)
        • S(d);::S(G)
      • Refutation
        • B(a);
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(f);OGATEB,S_FLIGHT,XR(C)::QAB(A)
      • S(d);SBLOCK,XR(C)::B(E)
      • P(g);SBLOCK,XP(D)::S(G)
      • R(c);N_GUARD,P_PINR(C)::S(F),XP(b)
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