MESON Chess Problem Database

Problem Display
PID: 258320 (n3r3/6Rb/4k2K/1P1nNp2/1P3P2/4Q3/B7/8 w - - 0 1)

Nestorescu, Virgil

1st HM., Buletin Problemistic, 1990/I

n3r3/6Rb/4k2K/1P1nNp2/1P3P2/4Q3/B7/8

#2

8 + 6

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Sc4#
    • 1...Kf6
      • 2.Sd7#
    • 1...Sb6
      • 2.Qxb6#
    • 1...Sc7
      • 2.Qb6#
  • Tries
    • 1.Bxd5+?
      • 1...Kd6
        • 2.Rd7#
        • 2.Qc5#
      • 1...Kf6
        • 2.Sd7#
        • 2.Rf7#
      • 1...Kxd5!
    • 1.Qc5?
      • threat
        • 2.Qc6#
      • 1...Rc8
        • 2.Qe7#
      • 1...Rd8
        • 2.Qe7#
      • 1...Kf6!
  • Keys
    • 1.Qa7!
      • 1...Kd6
        • 2.Qd7#
      • 1...Kf6
        • 2.Qf7#
      • 1...Re7
        • 2.Qxe7#
      • 1...Rb8
        • 2.Qe7#
      • 1...Rc8
        • 2.Qe7#
      • 1...Rd8
        • 2.Qe7#
      • 1...Rf8
        • 2.Qe7#
      • 1...Rg8
        • 2.Qe7#
      • 1...Rh8
        • 2.Qe7#
      • 1...Bg6
        • 2.Rxg6#
      • 1...Bg8
        • 2.Rg6#
      • 1...Sb6
        • 2.Qxb6#
      • 1...Sc7
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • K(c);N_GUARD,N_SPINS(a),P-FLIGHT,S_CUTS(a)::S(F)
    • K(c);N_GUARD,N_SPINS(a),P-FLIGHT::S(F)
    • S(e);N_GUARD::QAR(B),XS(e)
    • S(e);N_GUARD::QAR(B)
  • Tries
    • Try
      • B(A);CHECK,XS(a)
      • Refutation
        • K(c);S_FLIGHT,XB(A)
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • R(f);N_GUARD::QAR1(B)
      • Refutation
        • K(c);N_SPINS(a),P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(c);N_GUARD,N_SPINS(a),P-FLIGHT::QAR1(B)
      • R(f);N_GUARD::QAR1(B),XR(f)
      • R(f);N_GUARD::QAR1(B)
      • B(d);N_GUARD::R(H),XB(d)
      • B(d);N_GUARD::R(H)
      • S(e);N_GUARD::QAR(B),XS(e)
      • S(e);N_GUARD::QAR(B)
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