MESON Chess Problem Database

Problem Display
PID: 86587 (8/8/6Q1/4kp2/2P5/5K2/1P1N4/8 w - - 0 1)

Melnichenko, Viktor Oleksandrovich

The Problemist, 1991

8/8/6Q1/4kp2/2P5/5K2/1P1N4/8

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qd6#
  • Tries
    • 1.Ke2?
      • 1...Kd4
        • 2.Qd6#
      • 1...f4
        • 2.Sf3#
      • 1...Kf4!
    • 1.Kg2?
      • 1...Kf4
        • 2.Qg3#
      • 1...f4
        • 2.Sf3#
      • 1...Kd4!
    • 1.Qa6?
      • 1...Kd4
        • 2.Qd6#
      • 1...f4!
    • 1.Qc6?
      • 1...Kd4
        • 2.Qd5#
        • 2.Qd6#
      • 1...f4!
    • 1.Qe6+?
      • 1...Kd4
        • 2.Qd5#
        • 2.Qe3#
        • 2.Qd6#
      • 1...Kxe6!
    • 1.Qh6?
      • 1...Kd4
        • 2.Qe3#
        • 2.Qd6#
      • 1...f4!
    • 1.c5?
      • threat
        • 2.Qd6#
      • 1...Kd4
        • 2.Qd6#
      • 1...Kd5
        • 2.Qd6#
      • 1...f4!
  • Keys
    • 1.Kf2!
      • 1...Kd4
        • 2.Qd6#
      • 1...Kf4
        • 2.Qg3#
      • 1...f4
        • 2.Sf3#

FEATURES

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