MESON Chess Problem Database

Problem Display
PID: 36058 (6b1/1N1QK3/8/3p4/n1pk1N2/8/4R3/2R3b1 w - - 0 1)

Antonov, Yuri Mikhailovich

Shedey, Sergey Oleksandrovich

Hlas l'udu, 1984

6b1/1N1QK3/8/3p4/n1pk1N2/8/4R3/2R3b1

#2

6 + 6

3748 FIDE Album (1983-1985) 1992

SOLUTION

  • SOUND
  • Sets
    • 1...Bh7
      • 2.Qxd5#
    • 1...c3
      • 2.Qxa4#
  • Tries
    • 1.Qxa4?
      • threat
        • 2.Qd1#
        • 2.Qa7#
      • 1...Bh7
        • 2.Qa7#
      • 1...Be3!
    • 1.Qf5?
      • threat
        • 2.Qe5#
        • 2.Qf6#
      • 1...c3
        • 2.Qd3#
      • 1...Be3!
    • 1.Qd6?
      • threat
        • 2.Qe5#
        • 2.Qf6#
      • 1...c3
        • 2.Qb4#
      • 1...Be6
        • 2.Qe5#
      • 1...Be3!
    • 1.Qc7?
      • threat
        • 2.Qe5#
      • 1...c3
        • 2.Rd1#
      • 1...Be3!
  • Keys
    • 1.Qh3!
      • threat
        • 2.Rd1#
        • 2.Qh8#
      • 1...Be3
        • 2.Qxe3#
      • 1...c3
        • 2.Qd3#
      • 1...Bh7
        • 2.Se6#
      • 1...Sb2
        • 2.Qc3#
        • 2.Qh8#
      • 1...Sc3
        • 2.Qxc3#
        • 2.Qh8#
      • 1...Sc5
        • 2.Qc3#
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(f);N_GUARD::QAR1(E),XP(e)
    • P(c);OGATEB::QAR(E),XS(b)
  • Tries
    • Try
      • Q(E);N_PINP(e),P_PINP(c),XS(b)
      • Threat
        • DUALS(2)
      • Vars
        • B(f);::QAB(E)
      • Refutation
        • B(a);
    • Try
      • Q(E);N_PINP(e)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);N_GUARD::QAR1(E)
      • Refutation
        • B(a);
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATEB::QAR2(E)
        • B(f);::QAB1(E)
      • Refutation
        • B(a);
    • Try
      • Q(E);N_PINP(e)
      • Threat
        • QAB1(E)
      • Vars
        • P(c);::R(A)
      • Refutation
        • B(a);
  • Actual
    • Q(E);N_PINP(e)
    • Threat
      • DUALS(2)
    • Vars
      • B(a);N_GUARD::QAB1(E),XB(a)
      • P(c);N_GUARD::QAR1(E)
      • B(f);N_GUARD::S(C)
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