MESON Chess Problem Database

Problem Display
PID: 11774 (8/8/Q7/4pk2/5p2/5N2/4BK2/8 w - - 0 1)

Belchikov, Nikolai Ivanovich

Sp. Prize, Vilna Ukraina, 1971

8/8/Q7/4pk2/5p2/5N2/4BK2/8

#2

4 + 3

3296 Shakhmatny zadachi miniaturi 1987

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qd3#
  • Tries
    • 1.Kg2?
      • 1...Ke4
        • 2.Qd3#
      • 1...Kg4
        • 2.Qg6#
      • 1...e4!
    • 1.Sh4+?
      • 1...Ke4
        • 2.Qd3#
        • 2.Qc4#
      • 1...Kg5!
    • 1.Bc4?
      • 1...Ke4
        • 2.Qg6#
      • 1...e4
        • 2.Qe6#
      • 1...Kg4!
    • 1.Qe6+?
      • 1...Ke4
        • 2.Qxe5#
      • 1...Kxe6!
  • Keys
    • 1.Bf1!
      • 1...Ke4
        • 2.Qd3#
      • 1...Kg4
        • 2.Qg6#
      • 1...e4
        • 2.Bh3#

FEATURES

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