MESON Chess Problem Database

Problem Display
PID: 122960 (8/8/2Q5/4kpP1/1N2N3/7P/8/3K4 w - - 0 1)

Dubbe, Friedrich

Deutsches Wochenschach, 1897

8/8/2Q5/4kpP1/1N2N3/7P/8/3K4

#2

6 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...fxe4
      • 2.Qf6#
    • 1...f4
      • 2.Qd5#
  • Tries
    • 1.Kd2?
      • 1...Kd4
        • 2.Qd5#
      • 1...fxe4
        • 2.Qf6#
      • 1...f4
        • 2.Qd5#
      • 1...Kf4!
  • Keys
    • 1.Ke2!
      • 1...Kd4
        • 2.Qd5#
      • 1...Kf4
        • 2.Sd3#
      • 1...fxe4
        • 2.Qf6#
      • 1...f4
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK,XS(D)::QAB1(F)
    • P(b);SBLOCK::QAR1(F)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
        • P(b);SBLOCK,XS(D)::QAB1(F)
        • P(b);SBLOCK::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • K(A);S_FLIGHT
    • Vars
      • K(a);S_FLIGHT::QAR1(F)
      • K(a);S_FLIGHT::S(C)
      • P(b);SBLOCK,XS(D)::QAB1(F)
      • P(b);SBLOCK::QAR1(F)
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