MESON Chess Problem Database

Problem Display
PID: 22168 (2K3b1/p1PPpk1n/P1n1N1pP/4p1p1/2B1N1P1/8/8/8 w - - 0 1)

Markx, BJM

2nd Prize, Tijdschrift vd NSB, 1898

2K3b1/p1PPpk1n/P1n1N1pP/4p1p1/2B1N1P1/8/8/8

#2

9 + 9

14665 Knights and Bishops 1909

SOLUTION

  • SOUND
  • Sets
    • 1...Sd8
      • 2.cxd8S#
    • 1...Sf6
      • 2.S4xg5#
    • 1...Sf8
      • 2.S6xg5#
      • 2.Sd8#
  • Tries
    • 1.Sf4+?
      • 1...Kf8
        • 2.Sxg6#
      • 1...e6!
  • Keys
    • 1.Bb5!
      • 1...Kxe6
        • 2.Bc4#
      • 1...Sb4
        • 2.d8S#
      • 1...Sd4
        • 2.d8S#
      • 1...Sa5
        • 2.d8S#
      • 1...Sb8
        • 2.d8S#
      • 1...Sd8
        • 2.cxd8S#
      • 1...Sf6
        • 2.S4xg5#
      • 1...Sf8
        • 2.S6xg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(c);OGATE::PXS(c)=S
    • S(h);N_GUARD,SBLOCK::S(B),XP(b)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(g);P-FLIGHT::S(E),XP(d)
      • Refutation
        • P(f);P_SPINP(f)
  • Actual
    • B(A);
    • Vars
      • K(g);OGATEB,S_FLIGHT,XS(E)::B(A)
      • S(c);N_GUARD::P=S
      • S(c);OGATE::PXS(c)=S
      • S(h);N_GUARD,SBLOCK::S(B),XP(b)
      • S(h);N_GUARD,SBLOCK::S(E),XP(b)
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