MESON Chess Problem Database

Problem Display
PID: 224538 (4Q2r/2K5/2P1Bp2/4kP1b/2P4N/8/4N3/5R2 w - - 0 1)

Hopkins, EL

English Mechanic and World of Science, 1887

(First published on Fri Apr 1 1887)

4Q2r/2K5/2P1Bp2/4kP1b/2P4N/8/4N3/5R2

#2

9 + 4

6490 yacpdb 2020
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rh6
      • 2.Bf7#
    • 1...Rh7+
      • 2.Bf7#
    • 1...Bf3
      • 2.Bg8#
    • 1...Bg4
      • 2.Bg8#
  • Keys
    • 1.Rf3!
      • threat
        • 2.Re3#
      • 1...Rh7+
        • 2.Bf7#
      • 1...Ke4
        • 2.Bd5#
      • 1...Bxf3
        • 2.Bg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(d);N_GUARD::QAR(I)+B(G)
    • R(d);CHECK,N_GUARD::QAR(I)+B(G)
    • B(b);N_GUARD::QAR(I)+B(G)
  • Actual
    • R(A);
    • Threat
      • R(A)
    • Vars
      • R(d);CHECK,N_GUARD::QAR(I)+B(G)
      • K(a);P-FLIGHT::QAR(I)+B(G),DCHECK
      • B(b);N_GUARD,XR(A)::QAR(I)+B(G)
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