MESON Chess Problem Database

Problem Display
PID: 187199 (8/4N3/2Q1N3/3p4/8/3k4/4pP2/4K3 w - - 0 1)

Nagnibida, Mykola Ivanovich

Probleemblad, 1979

8/4N3/2Q1N3/3p4/8/3k4/4pP2/4K3

#2

5 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qxd5#
    • 1...d4
      • 2.Sf4#
  • Tries
    • 1.Sf5?
      • 1...d4
        • 2.Sf4#
      • 1...Ke4!
    • 1.Sg6?
      • 1...d4
        • 2.Sef4#
        • 2.Sgf4#
        • 2.Se5#
      • 1...Ke4!
    • 1.Sc8?
      • 1...d4
        • 2.Sf4#
      • 1...Ke4!
    • 1.Sg8?
      • 1...d4
        • 2.Sf4#
      • 1...Ke4!
    • 1.Qc3+?
      • 1...Ke4
        • 2.Qe3#
        • 2.f3#
      • 1...Kxc3!
    • 1.Qc5?
      • 1...Ke4
        • 2.Qe3#
        • 2.Qxd5#
      • 1...d4!
    • 1.f3?
      • 1...Ke3
        • 2.Qc3#
      • 1...d4!
  • Keys
    • 1.Qc1!
      • 1...Ke4
        • 2.Qe3#
      • 1...d4
        • 2.Sc5#

FEATURES

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