MESON Chess Problem Database

Problem Display
PID: 232066 (Q5R1/1N2n3/5p1B/2K5/4k3/5N2/8/8 w - - 0 1)

Prideaux, Henry Maxwell

English Mechanic and World of Science, 1880

(First published on Fri May 21 1880)

Q5R1/1N2n3/5p1B/2K5/4k3/5N2/8/8

#2

6 + 3

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qa4+?
      • 1...Kd3
        • 2.Qc4#
      • 1...Kf5
        • 2.Qg4#
      • 1...Kxf3!
  • Keys
    • 1.Qa2!
      • 1...Kd3
        • 2.Qc4#
      • 1...Kxf3
        • 2.Qg2#
      • 1...Kf5
        • 2.Sd6#
      • 1...Sxg8
        • 2.Qd5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sf5
        • 2.Qd5#
      • 1...Sc6
        • 2.Qd5#
      • 1...Sg6
        • 2.Qd5#
      • 1...Sc8
        • 2.Qd5#
      • 1...f5
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • K(a);OGATE,S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT,XS(A)
  • Actual
    • Q(E);
    • Vars
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);OGATEB,S_FLIGHT,XS(A)::QAB1(E)
      • K(a);S_FLIGHT::S(D)
      • S(c);N_GUARD,XR(F)::QAB1(E)
      • S(c);N_GUARD::QAB1(E),XS(c)
      • S(c);N_GUARD::QAB1(E)
      • P(b);SBLOCK::QAR2(E)
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