MESON Chess Problem Database

Problem Display
PID: 251851 (N2K4/2P3bN/2R5/1P1kP3/n2Pp3/4p1Q1/5R2/6B1 w - - 0 1)

Anonymous

Manchester Weekly Times, 1889

(First published on Sat Jul 6 1889)

N2K4/2P3bN/2R5/1P1kP3/n2Pp3/4p1Q1/5R2/6B1

#2

11 + 5

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Rd2#
    • 1...Bxe5
      • 2.Qxe5#
  • Tries
    • 1.Sf6+?
      • 1...Kxd4
        • 2.Rd2#
      • 1...Bxf6+!
    • 1.Sb6+?
      • 1...Kxd4
        • 2.Rd2#
      • 1...Sxb6!
  • Keys
    • 1.Rd2!
      • 1...Bf6+
        • 2.Sxf6#
      • 1...Bxe5
        • 2.Qxe5#
        • 2.Qg8#
      • 1...exd2
        • 2.Qb3#
      • 1...Sc5
        • 2.Sb6#
      • 1...Bh6
        • 2.Sf6#
        • 2.Qg8#
      • 1...Bf8
        • 2.Sf6#
        • 2.Qg8#
      • 1...Bh8
        • 2.Qg8#
      • 1...Sb2
        • 2.Sb6#
      • 1...Sc3
        • 2.Sb6#
      • 1...Sb6
        • 2.Sxb6#
      • 1...e2
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 2
  • Sets
    • K(d);OGATEB,P-FLIGHT,XP(D)::R(B)
    • B(e);OGATE,XP(F)::QAR1(C),XB(e)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • K(d);P-FLIGHT,S_CUTB(e),XP(D)::R(B)
      • Refutation
        • B(e);CHECK,XS(I)
    • Try
      • S(J);CHECK
      • Vars
        • K(d);P-FLIGHT,S_CUTS(b),XP(D)::R(B)
      • Refutation
        • S(b);XS(J)
  • Actual
    • R(B);
    • Vars
      • B(e);CHECK,N_GUARD::S(I),XB(e)
      • P(a);OGATE,XR(B)::QAB(C)
      • S(b);N_GUARD::S(J)
      • B(e);OGATE::QAB(C)
      • S(b);N_GUARD::S(J),XS(b)
      • P(a);OGATE::QAB(C)
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