MESON Chess Problem Database

Problem Display
PID: 12356 (b2B4/3p4/B1k5/8/3Q4/K7/8/8 w - - 0 1)

Davidenko, Fedor Vasilevich

5th HM., Il Duale, 1978

b2B4/3p4/B1k5/8/3Q4/K7/8/8

#2

4 + 3

145 StrateGems 2008

SOLUTION

  • SOUND
  • Tries
    • 1.Bc8?
      • 1...d5
        • 2.Qb6#
      • 1...Bb7
        • 2.Bxd7#
      • 1...d6
        • 2.Qc4#
      • 1...Kb5!
    • 1.Be7?
      • threat
        • 2.Qc5#
        • 2.Qd6#
      • 1...Kc7
        • 2.Qd6#
      • 1...d6
        • 2.Qxd6#
      • 1...d5!
  • Keys
    • 1.Qe5!
      • 1...d5
        • 2.Qc7#
      • 1...d6
        • 2.Qb5#
      • 1...Bb7
        • 2.Bb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);
      • Vars
        • P(b);SBLOCK::QAR1(B)
        • B(c);SBLOCK::B(C),XP(b)
        • P(b);SBLOCK::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
        • P(b);::QAR1(B),XP(b)
      • Refutation
        • P(b);
  • Actual
    • Q(B);
    • Vars
      • P(b);SBLOCK::QAR1(B)
      • P(b);SBLOCK::QAB1(B)
      • B(c);SBLOCK::B(C)
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