MESON Chess Problem Database

Problem Display
PID: 9732 (8/7K/5p2/8/R2N1k2/8/5B2/Q7 w - - 0 1)

Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)

Basler Nachrichten, 1909

8/7K/5p2/8/R2N1k2/8/5B2/Q7

#2

5 + 2

3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991

SOLUTION

  • SOUND
  • Tries
    • 1.Qb1?
      • threat
        • 2.Qf5#
      • 1...Kg4
        • 2.Qf5#
      • 1...Kg5
        • 2.Qf5#
      • 1...f5
        • 2.Qxf5#
      • 1...Ke5!
  • Keys
    • 1.Qh1!
      • 1...Kg4
        • 2.Qh4#
      • 1...Ke5
        • 2.Bg3#
      • 1...Kg5
        • 2.Qh4#
      • 1...f5
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
        • K(a);S_FLIGHT::QAR1(A)
        • P(b);::QAR1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT::QAR1(A)
      • K(a);S_FLIGHT::B(B)
      • K(a);S_FLIGHT::QAB1(A)
      • P(b);SBLOCK::R(C)+S(D)
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