MESON Chess Problem Database

Problem Display
PID: 182299 (3KbN2/Q2p4/n4RP1/3Nk3/7P/5P2/8/8 w - - 0 1)

van Dijk, Johannes

van der Hoven, HC

Schaakblad, 1906

3KbN2/Q2p4/n4RP1/3Nk3/7P/5P2/8/8

#2

8 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Se7?
      • 1...Kxf6
        • 2.Qd4#
      • 1...Bxg6
        • 2.Sxd7#
      • 1...Sc5
        • 2.Qa1#
      • 1...Bf7
        • 2.Sxd7#
      • 1...Sb4
        • 2.Qa1#
      • 1...Sc7
        • 2.Qa1#
      • 1...Sb8
        • 2.Qa1#
      • 1...d6
        • 2.Rf5#
      • 1...d5!
    • 1.Rf5+?
      • 1...Kd6
        • 2.Qb6#
      • 1...Kxf5!
  • Keys
    • 1.Se3!
      • 1...Kxf6
        • 2.Qd4#
      • 1...Bxg6
        • 2.Sxd7#
      • 1...Sc5
        • 2.Qa1#
      • 1...Bf7
        • 2.Sxd7#
      • 1...Sb4
        • 2.Qa1#
      • 1...Sc7
        • 2.Qa1#
      • 1...Sb8
        • 2.Qa1#
      • 1...d5
        • 2.Sg4#
      • 1...d6
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Vars
        • K(a);S_FLIGHT,XR(D)::QAB(F)
        • B(d);N_GUARD,XP(E)::S(H),XP(c)
        • S(b);OGATE::QAB(F)
        • B(d);N_GUARD::S(H),XP(c)
        • P(c);SBLOCK::R1(D)
      • Refutation
        • P(c);
    • Try
      • R(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(F)
      • Refutation
        • K(a);P-FLIGHT,XR(D)
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT,XR(D)::QAB(F)
      • B(d);N_GUARD,XP(E)::S(H),XP(c)
      • S(b);OGATE::QAB(F)
      • B(d);N_GUARD::S(H),XP(c)
      • P(c);SBLOCK::S(C)
      • P(c);SBLOCK::R1(D)
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