MESON Chess Problem Database

Problem Display
PID: 69377 (1B6/3p1p2/3Np3/1P1pk3/1P5Q/8/7K/8 w - - 0 1)

de Jong, Leonard Nicholaas

Tijdschrift vd NSB, 1897

1B6/3p1p2/3Np3/1P1pk3/1P5Q/8/7K/8

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Sc4#
      • 2.Sf7#
  • Tries
    • 1.Kg3?
      • threat
        • 2.Qf4#
      • 1...f5
        • 2.Sc4#
        • 2.Sf7#
        • 2.Qh8#
      • 1...d4!
    • 1.Sc8+?
      • 1...Kf5
        • 2.Se7#
      • 1...d6!
    • 1.Qg3+?
      • 1...Kd4
        • 2.Ba7#
      • 1...Kf6!
  • Keys
    • 1.Ba7!
      • 1...Kxd6
        • 2.Bb8#
      • 1...d4
        • 2.Qxd4#
      • 1...f6
        • 2.Qg3#
      • 1...f5
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • QAB1(C)
      • Refutation
        • P(a);
    • Try
      • S(E);CHECK
      • Vars
        • K(b);P-FLIGHT::S(E)
      • Refutation
        • P(d);P_SPINP(d)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::B(F)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(F);
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(E)::B(F)
      • P(a);::QAB1(C),XP(a)
      • P(e);SBLOCK::QAB(C)
      • P(e);SBLOCK::S(E)
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