MESON Chess Problem Database

Problem Display
PID: 240445 (1N6/K6p/3k3B/5B2/4P3/2P5/8/6Q1 w - - 0 1)

Parkhomenko, Nikolai A

Sachove umeni (Ceskoslovensky sach), 1970

1N6/K6p/3k3B/5B2/4P3/2P5/8/6Q1

#2

7 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qd4#
    • 1...Kc7
      • 2.Qb6#
  • Tries
    • 1.Ka6?
      • 1...Ke5
        • 2.Qd4#
      • 1...Kc7
        • 2.Qb6#
      • 1...Ke7!
    • 1.Kb6?
      • threat
        • 2.Qc5#
      • 1...Ke5
        • 2.Qd4#
      • 1...Ke7!
    • 1.Kb7?
      • 1...Ke5
        • 2.Qd4#
      • 1...Ke7!
    • 1.Sa6?
      • threat
        • 2.Qc5#
      • 1...Ke5
        • 2.Qd4#
      • 1...Kc6
        • 2.Qc5#
        • 2.Qb6#
      • 1...Ke7!
    • 1.Sc6?
      • 1...Kxc6
        • 2.Qb6#
      • 1...Kc7!
    • 1.Bh3?
      • 1...Ke5
        • 2.Qd4#
      • 1...Kc7
        • 2.Qb6#
      • 1...Ke7!
    • 1.Bg4?
      • 1...Ke5
        • 2.Qd4#
      • 1...Kc7
        • 2.Qb6#
      • 1...Ke7!
    • 1.Bd7?
      • 1...Ke5
        • 2.Qd4#
      • 1...Kc7
        • 2.Qb6#
      • 1...Ke7!
    • 1.Bf8+?
      • 1...Kc7
        • 2.Qb6#
      • 1...Ke5!
    • 1.Qf2?
      • 1...Ke5
        • 2.Qd4#
      • 1...Kc7
        • 2.Qb6#
      • 1...Ke7!
    • 1.Qe3?
      • 1...Ke5
        • 2.Qd4#
      • 1...Kc7
        • 2.Qb6#
      • 1...Ke7!
    • 1.Qd4+?
      • 1...Kc7
        • 2.Bf4#
        • 2.Qb6#
        • 2.Qd7#
      • 1...Ke7!
    • 1.Qb6+?
      • 1...Ke5
        • 2.Sd7#
        • 2.Qd4#
        • 2.Qe6#
      • 1...Ke7!
    • 1.Qd1+?
      • 1...Kc5
        • 2.Qd5#
      • 1...Ke5
        • 2.Sd7#
        • 2.Qd4#
      • 1...Kc7
        • 2.Bf4#
        • 2.Qd7#
      • 1...Ke7!
    • 1.Qg5?
      • 1...Ke5
        • 2.Qe7#
      • 1...Kc7
        • 2.Qe7#
      • 1...Kc5!
    • 1.Qg6+?
      • 1...Kc5
        • 2.Qc6#
      • 1...Ke5
        • 2.Sc6#
        • 2.Sd7#
        • 2.Qe6#
      • 1...Kc7
        • 2.Qb6#
      • 1...Ke7
        • 2.Sc6#
      • 1...hxg6!
  • Keys
    • 1.Qg8!
      • 1...Kc5
        • 2.Qd5#
      • 1...Ke5
        • 2.Qe6#
      • 1...Kc7
        • 2.Bf4#
      • 1...Ke7
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(A)
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(F);S_FLIGHT
      • Threat
        • QAB1(A)
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(F);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(G);
      • Threat
        • QAB1(A)
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(G);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(G)::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(A)
        • K(a);OGATE,S_FLIGHT::QAB1(A)
        • K(a);S_FLIGHT::S(G)
      • Refutation
        • P(b);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::QAR1(A)
      • K(a);S_FLIGHT::B(E)
      • K(a);S_FLIGHT::QAB1(A)
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