MESON Chess Problem Database

Problem Display
PID: 243844 (2K1R3/7p/2NNp3/3kPp2/BPp1p3/3p4/6P1/2qQ3r w - - 0 1)

Chepizhni, Viktor Ivanovich

64 Shakhmatnoe obozrenie, 2012

2K1R3/7p/2NNp3/3kPp2/BPp1p3/3p4/6P1/2qQ3r

#2

9 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Qb3#
    • 1...e3
      • 2.Qf3#
  • Tries
    • 1.Sxe4?
      • threat
        • 2.Sf6#
      • 1...Kxe4
        • 2.Qf3#
      • 1...fxe4
        • 2.Rd8#
      • 1...c3
        • 2.Qxd3#
      • 1...Qg5
        • 2.Sc3#
      • 1...Qh6
        • 2.Sc3#
      • 1...Rh6!
    • 1.Sb7?
      • threat
        • 2.Rd8#
      • 1...c3
        • 2.Qb3#
      • 1...e3
        • 2.Qf3#
      • 1...Qg5!
    • 1.Sf7?
      • threat
        • 2.Rd8#
      • 1...c3
        • 2.Qb3#
      • 1...e3
        • 2.Qf3#
      • 1...Qg5!
    • 1.Rd8?
      • threat
        • 2.Sxf5#
        • 2.Sb7#
        • 2.Sf7#
        • 2.Se8#
      • 1...c3
        • 2.Qb3#
      • 1...e3
        • 2.Qf3#
      • 1...f4
        • 2.Sf5#
        • 2.Sb7#
        • 2.Sf7#
        • 2.Se8#
      • 1...Qg5!
  • Keys
    • 1.Sxc4!
      • threat
        • 2.Sb6#
      • 1...Kxc4
        • 2.Qb3#
      • 1...Qxc4
        • 2.Rd8#
      • 1...e3
        • 2.Qxd3#
      • 1...Qe3
        • 2.Sxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(d);OGATEB::QAB(A)
    • P(e);OGATEB::QAB(A)
  • Tries
    • Try
      • S(G);XP(e)
      • Threat
        • S(G)
      • Vars
        • K(f);N_SPINP(c),OGATEB,S_FLIGHT,XS(G)::QAB1(A)
        • P(g);SBLOCK,XS(G)::R(I)
        • P(d);N_GUARD::QAR2(A),XP(c)
        • Q(a);N_GUARD::S(G)
      • Refutation
        • R(b);
    • Try
      • S(G);
      • Threat
        • R(I)
      • Vars
        • P(d);OGATEB::QAB(A)
        • P(e);OGATEB::QAB(A)
      • Refutation
        • Q(a);
    • Try
      • S(G);
      • Threat
        • R(I)
      • Vars
        • P(d);OGATEB::QAB(A)
        • P(e);OGATEB::QAB(A)
      • Refutation
        • Q(a);
    • Try
      • R(I);
      • Threat
        • DUALS(4)
      • Vars
        • P(d);OGATEB::QAB(A)
        • P(e);OGATEB::QAB(A)
      • Refutation
        • Q(a);
  • Actual
    • S(G);XP(d)
    • Threat
      • S(G)
    • Vars
      • K(f);N_SPINP(c),OGATEB,S_FLIGHT,XS(G)::QAB1(A)
      • Q(a);P_PINS(F),SBLOCK,XS(G)::R(I)
      • P(e);N_GUARD::QAR2(A),XP(c)
      • Q(a);N_GUARD::S(G),XQ(a)
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