MESON Chess Problem Database

Problem Display
PID: 164631 (1B2r2b/7R/3NkN2/6RK/2pp4/7p/5r2/Q7 w - - 0 1)

Kapustin, Fedor Mikhailovich

Zadachi i Etyudi, 2014

1B2r2b/7R/3NkN2/6RK/2pp4/7p/5r2/Q7

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf6
      • 2.Qe1#
    • 1...d3
      • 2.Qe5#
  • Tries
    • 1.Sdxe8?
      • threat
        • 2.Re5#
        • 2.Qa6#
      • 1...Bxf6
        • 2.Qa6#
      • 1...Ra2
        • 2.Re5#
      • 1...Rb2
        • 2.Re5#
      • 1...Re2
        • 2.Qa6#
      • 1...Rf5
        • 2.Qa6#
      • 1...Bg7!
    • 1.Re5+?
      • 1...Kxf6
        • 2.Se4#
        • 2.Sxe8#
      • 1...Kxe5!
    • 1.Qe1+?
      • 1...Kxf6
        • 2.Sxe8#
        • 2.Rg6#
        • 2.Rh6#
        • 2.Rf7#
      • 1...Re2!
    • 1.Qa7?
      • threat
        • 2.Qf7#
      • 1...Kxf6
        • 2.Rh6#
        • 2.Qf7#
      • 1...Rxf6
        • 2.Qd7#
      • 1...Rxb8
        • 2.Qe7#
      • 1...Re7
        • 2.Qxe7#
      • 1...Rf8
        • 2.Qe7#
      • 1...Rf5!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Qe5#
      • 1...Kxf6
        • 2.Rg6#
      • 1...Bxf6
        • 2.Qd5#
      • 1...Re2
        • 2.Qf5#
      • 1...Rf5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(a);N_GUARD,SBLOCK,XS(E)::QAR(A)
    • P(d);OGATE::QAR1(A)
  • Tries
    • Try
      • S(D);XR(f)
      • Threat
        • DUALS(2)
      • Vars
        • B(g);XS(E)::QAR(A)
        • R(a);::R1(B)
        • R(a);::QAR(A)
        • R(a);P_PINR(B)::QAR(A)
      • Refutation
        • B(g);
    • Try
      • R(B);CHECK
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(d),XR(B)
    • Try
      • Q(A);CHECK
      • Refutation
        • R(a);P_SPINR(a)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • R(a);SBLOCK,XS(E)::QAB1(A)
        • R(f);N_GUARD,XB(G)::QAR1(A)
        • R(f);N_GUARD::QAR1(A),XR(f)
        • R(f);N_GUARD::QAR1(A)
      • Refutation
        • R(a);P_PINR(B)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(e);OGATEB,P-FLIGHT,XS(E)::R1(B)
      • B(g);SBLOCK,XS(E)::QAB1(A)
      • R(a);N_GUARD::QAB1(A)
      • R(a);N_GUARD,P_PINR(B)::QAB1(A),XR(a)
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