MESON Chess Problem Database

Problem Display
PID: 94603 (7Q/1p6/1K3R2/8/3pk1N1/8/1R6/8 w - - 0 1)

Lukashev, Viktor Sergeevich

Magadanskaya Pravda, 1997

7Q/1p6/1K3R2/8/3pk1N1/8/1R6/8

#2

5 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sf2+?
      • 1...Ke3
        • 2.Qh3#
        • 2.Qh6#
        • 2.Qe8#
      • 1...Ke5
        • 2.Rb5#
      • 1...Kd5!
    • 1.Rc2?
      • 1...Kd3
        • 2.Qh7#
      • 1...Kd5
        • 2.Qh1#
      • 1...d3!
    • 1.Re2+?
      • 1...Kd5
        • 2.Qg8#
      • 1...Kd3!
    • 1.Rb4?
      • 1...Kd5
        • 2.Qh1#
      • 1...Kd3!
    • 1.Qh2?
      • 1...Kd3
        • 2.Qc2#
      • 1...d3
        • 2.Qe5#
      • 1...Kd5!
    • 1.Qh5?
      • threat
        • 2.Qf5#
      • 1...d3
        • 2.Rb4#
        • 2.Qe5#
      • 1...Kd3!
    • 1.Qd8?
      • 1...d3
        • 2.Rb4#
      • 1...Kd3!
    • 1.Qe8+?
      • 1...Kd5
        • 2.Qe6#
      • 1...Kd3!
    • 1.Qg8?
      • 1...d3
        • 2.Rb4#
        • 2.Qc4#
      • 1...Kd3!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Qf5#
      • 1...Kd3
        • 2.Qc2#
      • 1...Kd5
        • 2.Qe6#
      • 1...d3
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(b);P-FLIGHT::R(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(b);S_FLIGHT::QAB(E)
      • Refutation
        • P(a);
    • Try
      • R(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(A);P_PINP(a)
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::QAB(E)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
        • P(a);SBLOCK::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • P(a);OGATEB::R(A)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • K(b);S_FLIGHT::QAB1(E)
      • P(a);OGATEB::QAR2(E)
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