MESON Chess Problem Database

Problem Display
PID: 237316 (1n6/4Q3/8/3k4/3P4/3R4/3N4/7K w - - 0 1)

Dyachuk, Vasyl Vasilovich

Problemist Pribuzhya, 1993

1n6/4Q3/8/3k4/3P4/3R4/3N4/7K

#2

5 + 2

5454 Near Snap 2021
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sa6
      • 2.Qd7#
    • 1...Sc6
      • 2.Qd7#
    • 1...Sd7
      • 2.Qxd7#
  • Tries
    • 1.Kg1?
      • 1...Sa6
        • 2.Qd7#
      • 1...Sc6
        • 2.Qd7#
      • 1...Sd7
        • 2.Qxd7#
      • 1...Kc6!
    • 1.Kg2?
      • 1...Sa6
        • 2.Qd7#
      • 1...Sc6
        • 2.Qd7#
      • 1...Sd7
        • 2.Qxd7#
      • 1...Kc6!
    • 1.Kh2?
      • 1...Sa6
        • 2.Qd7#
      • 1...Sc6
        • 2.Qd7#
      • 1...Sd7
        • 2.Qxd7#
      • 1...Kc6!
    • 1.Ra3?
      • 1...Kxd4
        • 2.Qd6#
      • 1...Sa6
        • 2.Qd7#
      • 1...Sc6
        • 2.Qd7#
      • 1...Sd7
        • 2.Qxd7#
      • 1...Kc6!
    • 1.Rb3?
      • 1...Kxd4
        • 2.Qd6#
      • 1...Sa6
        • 2.Qd7#
      • 1...Sc6
        • 2.Qd7#
      • 1...Sd7
        • 2.Qxd7#
      • 1...Kc6!
    • 1.Re3?
      • threat
        • 2.Qc5#
      • 1...Kxd4
        • 2.Qe5#
      • 1...Sa6
        • 2.Qd7#
      • 1...Sd7
        • 2.Qxd7#
      • 1...Kc6!
    • 1.Rf3?
      • 1...Kxd4
        • 2.Qd6#
      • 1...Sa6
        • 2.Qd7#
      • 1...Sc6
        • 2.Qd7#
      • 1...Sd7
        • 2.Qxd7#
      • 1...Kc6!
    • 1.Rg3?
      • 1...Kxd4
        • 2.Qd6#
      • 1...Sa6
        • 2.Qd7#
      • 1...Sc6
        • 2.Qd7#
      • 1...Sd7
        • 2.Qxd7#
      • 1...Kc6!
    • 1.Rh3?
      • 1...Kxd4
        • 2.Qd6#
      • 1...Sa6
        • 2.Qd7#
      • 1...Sc6
        • 2.Qd7#
      • 1...Sd7
        • 2.Qxd7#
      • 1...Kc6!
    • 1.Qc7?
      • 1...Sa6
        • 2.Qd7#
      • 1...Sc6
        • 2.Qd7#
      • 1...Sd7
        • 2.Qxd7#
      • 1...Ke6!
    • 1.Qe8?
      • 1...Sd7
        • 2.Qxd7#
      • 1...Sa6
        • 2.Qd7#
      • 1...Sc6
        • 2.Qd7#
      • 1...Kd6!
  • Keys
    • 1.Rc3!
      • threat
        • 2.Qe5#
      • 1...Kxd4
        • 2.Qc5#
      • 1...Sc6
        • 2.Qd7#
      • 1...Sd7
        • 2.Qxd7#

This anticipates 23153(1996)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(b);N_GUARD::QAR2(E)
    • S(b);N_GUARD::QAR2(E),XS(b)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • S(b);N_GUARD::QAR2(E)
        • S(b);N_GUARD::QAR2(E),XS(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(A);S_FLIGHT
      • Vars
        • S(b);N_GUARD::QAR2(E)
        • S(b);N_GUARD::QAR2(E),XS(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(A);P-FLIGHT
      • Vars
        • S(b);N_GUARD::QAR2(E)
        • S(b);N_GUARD::QAR2(E),XS(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT,XP(D)::QAR2(E)
        • S(b);N_GUARD::QAR2(E)
        • S(b);N_GUARD::QAR2(E),XS(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT,XP(D)::QAR2(E)
        • S(b);N_GUARD::QAR2(E)
        • S(b);N_GUARD::QAR2(E),XS(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Threat
        • QAR1(E)
      • Vars
        • K(a);P-FLIGHT,XP(D)::QAB1(E)
        • S(b);N_GUARD::QAR2(E)
        • S(b);N_GUARD::QAR2(E),XS(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT,XP(D)::QAR2(E)
        • S(b);N_GUARD::QAR2(E)
        • S(b);N_GUARD::QAR2(E),XS(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT,XP(D)::QAR2(E)
        • S(b);N_GUARD::QAR2(E)
        • S(b);N_GUARD::QAR2(E),XS(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT,XP(D)::QAR2(E)
        • S(b);N_GUARD::QAR2(E)
        • S(b);N_GUARD::QAR2(E),XS(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • S(b);N_GUARD::QAR2(E)
        • S(b);N_GUARD::QAR2(E),XS(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • S(b);N_GUARD::QAR2(E),XS(b)
        • S(b);N_GUARD::QAR2(E)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • R(C);
    • Threat
      • QAR1(E)
    • Vars
      • K(a);P-FLIGHT,XP(D)::QAB1(E)
      • S(b);N_GUARD::QAR2(E)
      • S(b);N_GUARD::QAR2(E),XS(b)
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