MESON Chess Problem Database

Problem Display
PID: 231814 (1B6/4p1K1/3pk3/5p2/1R6/4P3/8/7Q w - - 0 1)

Olver, J

Pen & Pencil, 1889

(First published on Sat Jul 27 1889)

1B6/4p1K1/3pk3/5p2/1R6/4P3/8/7Q

#2

5 + 4

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rb5?
      • 1...f4
        • 2.Qh3#
      • 1...d5
        • 2.Qxd5#
      • 1...Kd7!
  • Keys
    • 1.Rb7!
      • 1...Ke5
        • 2.Rxe7#
      • 1...f4
        • 2.Qe4#
      • 1...d5
        • 2.Qh6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);
      • Vars
        • P(a);OGATEB::QAB(A)
        • P(b);::QAB1(A),XP(b)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • R(C);
    • Vars
      • K(c);P-FLIGHT,P_SPINP(b)::R(C),XP(d)
      • P(a);N_GUARD::QAR2(A)
      • P(b);SBLOCK::QAR(A)
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