MESON Chess Problem Database

Problem Display
PID: 149970 (7N/4p1rp/6n1/2K1kpQ1/2B2p1B/2N5/4P3/b7 w - - 0 1)

Busik, Vladimir

Pravda, 1969

7N/4p1rp/6n1/2K1kpQ1/2B2p1B/2N5/4P3/b7

#2

7 + 8

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rf7
      • 2.Sxf7#
    • 1...Rg8
      • 2.Sf7#
    • 1...Sxh4
      • 2.Qxg7#
    • 1...Sf8
      • 2.Qxg7#
    • 1...Sxh8
      • 2.Qxg7#
    • 1...f3
      • 2.Qe3#
    • 1...e6
      • 2.Qf6#
  • Tries
    • 1.Qh6?
      • threat
        • 2.Qxg7#
      • 1...Rf7
        • 2.Sxf7#
      • 1...Rg8
        • 2.Sf7#
      • 1...f3
        • 2.Qe3#
      • 1...Bxc3!
  • Keys
    • 1.e4!
      • threat
        • 2.Qxf5#
      • 1...Sxh4
        • 2.Qxg7#
      • 1...fxe4 ep
        • 2.Qxe3#
      • 1...Rf7
        • 2.Sxf7#
      • 1...e6
        • 2.Qf6#

FEATURES

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