MESON Chess Problem Database

Problem Display
PID: 255658 (R6K/2P1k1P1/1PP5/6N1/1p2B3/1r5p/Q7/8 w - - 0 1)

Kapustin, Fedor Mikhailovich

Buletin Problemistic, 1983

R6K/2P1k1P1/1PP5/6N1/1p2B3/1r5p/Q7/8

#2

9 + 4

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Qe6#
    • 1...Rb2
      • 2.Qe6#
    • 1...Ra3
      • 2.Qe6#
    • 1...Rc3
      • 2.Qe6#
    • 1...Rd3
      • 2.Qe6#
    • 1...Re3
      • 2.Qe6#
    • 1...Rf3
      • 2.Qe6#
    • 1...Rg3
      • 2.Qe6#
  • Tries
    • 1.Ra5?
      • 1...Kd6
        • 2.c8S#
      • 1...Kf6
        • 2.g8S#
      • 1...Ke8
        • 2.Re5#
      • 1...Rb1
        • 2.Qe6#
      • 1...Rb2
        • 2.Qe6#
      • 1...Ra3
        • 2.Qe6#
      • 1...Rc3
        • 2.Qe6#
      • 1...Rd3
        • 2.Qe6#
      • 1...Re3
        • 2.Qe6#
      • 1...Rf3
        • 2.Qe6#
      • 1...Rg3
        • 2.Qe6#
      • 1...h2!
    • 1.c8S+?
      • 1...Kd8
        • 2.g8Q#
        • 2.g8R#
      • 1...Ke8
        • 2.g8Q#
        • 2.g8R#
      • 1...Kf6!
    • 1.g8Q?
      • threat
        • 2.Qe6#
        • 2.Qd8#
        • 2.Qf8#
      • 1...Kf6
        • 2.Qg7#
      • 1...Rd3
        • 2.Qae6#
        • 2.Qge6#
        • 2.Qf8#
      • 1...Rf3
        • 2.Qae6#
        • 2.Qge6#
        • 2.Qd8#
      • 1...Kd6!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Qe5#
      • 1...Kd6
        • 2.c8S#
      • 1...Kf6
        • 2.g8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(a);OGATE::QAR1(A)
  • Tries
    • Try
      • R(H);
      • Vars
        • K(d);N_GUARD,S_FLIGHT::P=S
        • K(d);N_GUARD,P-FLIGHT::R(H)
        • R(a);OGATE::QAR1(A)
      • Refutation
        • P(b);
    • Try
      • P(F);CHECK
      • Vars
        • K(d);N_GUARD,S_FLIGHT::P=Q
        • K(d);N_GUARD,P-FLIGHT::P=Q
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • P(G);
      • Threat
        • DUALS(3)
      • Vars
        • K(d);N_GUARD,S_FLIGHT::QAB1(G)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(d);N_GUARD,S_FLIGHT::P=S
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