MESON Chess Problem Database

Problem Display
PID: 86560 (8/4p3/4K3/8/8/1P1kP3/5Q2/3N4 w - - 0 1)

Melnichenko, Viktor Oleksandrovich

Listova Gospodarstvo, 1989

8/4p3/4K3/8/8/1P1kP3/5Q2/3N4

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qf5#
  • Tries
    • 1.Sb2+?
      • 1...Ke4
        • 2.Qf4#
      • 1...Kc3!
    • 1.Qd2+?
      • 1...Ke4
        • 2.Qd5#
      • 1...Kxd2!
    • 1.Qe2+?
      • 1...Ke4
        • 2.Sf2#
        • 2.Sc3#
      • 1...Kxe2!
    • 1.b4?
      • 1...Ke4
        • 2.Qf5#
      • 1...Kc4!
  • Keys
    • 1.e4!
      • 1...Kxe4
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(B)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • P(C);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(D);
    • Vars
      • K(a);S_FLIGHT,XP(D)::QAR1(B)
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