MESON Chess Problem Database

Problem Display
PID: 241108 (1K2N1B1/7Q/1p3P1P/1Rn1k3/8/2n1b3/1B1PN1pP/5rq1 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Shakhmaty (Riga), 1968

1K2N1B1/7Q/1p3P1P/1Rn1k3/8/2n1b3/1B1PN1pP/5rq1

#2

11 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Qe7#
  • Tries
    • 1.Qd7?
      • threat
        • 2.Qe6#
        • 2.Qd5#
      • 1...Rxf6
        • 2.Qd5#
      • 1...Bd4
        • 2.Qe6#
      • 1...Ke4!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qe7#
      • 1...Kxd6
        • 2.Qc7#
      • 1...Kxf6
        • 2.Qg7#
      • 1...Rxf6
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(a);SBLOCK::QAR2(H)
  • Tries
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);XP(F)::QAR1(H)
        • B(e);N_SPINS(d),P_SPINS(f)::QAR1(H)
      • Refutation
        • K(g);N_SPINS(d),P-FLIGHT
  • Actual
    • S(J);
    • Threat
      • QAR2(H)
    • Vars
      • K(g);N_SPINS(d),OGATEB,S_FLIGHT,XS(J)::QAB1(H)
      • K(g);OGATEB,S_FLIGHT,XP(F)::QAB1(H)
      • R(a);SBLOCK,XP(F)::S(J)
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