MESON Chess Problem Database

Problem Display
PID: 101757 (8/5p2/2Q3P1/3Nk3/7K/2P5/2B5/8 w - - 0 1)

Bolotbekov, Serghei

diagrammes, 1989

8/5p2/2Q3P1/3Nk3/7K/2P5/2B5/8

#2

6 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sf6?
      • 1...Kf4
        • 2.Qe4#
      • 1...fxg6!
    • 1.Bf5?
      • 1...fxg6
        • 2.Qe6#
      • 1...f6
        • 2.Qe6#
      • 1...Kxf5!
    • 1.c4?
      • threat
        • 2.Qf6#
      • 1...f6
        • 2.Qxf6#
      • 1...Kd4!
  • Keys
    • 1.Sf4!
      • 1...Kxf4
        • 2.Qe4#
      • 1...fxg6
        • 2.Sxg6#
      • 1...f5
        • 2.Sd3#
      • 1...f6
        • 2.Qc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
      • Refutation
        • P(b);XP(F)
    • Try
      • B(A);
      • Vars
        • P(b);N_GUARD,XP(F)::QAR1(E)
        • P(b);N_GUARD::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT,XB(A)
    • Try
      • P(B);
      • Threat
        • QAB1(E)
      • Vars
        • P(b);::QAB1(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(a);S_FLIGHT,XS(D)::QAR1(E)
      • P(b);XP(F)::S(D),XP(b)
      • P(b);SBLOCK::S(D)
      • P(b);SBLOCK::QAB(E)
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