MESON Chess Problem Database

Problem Display
PID: 258628 (8/3p1p1K/8/R2Pk3/6Q1/5P2/8/6B1 w - - 0 1)

Fellows, Herbert N

English Mechanic and World of Science, 1902

(First published on Fri May 9 1902)

8/3p1p1K/8/R2Pk3/6Q1/5P2/8/6B1

#2

6 + 3

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...d6
      • 2.Bd4#
    • 1...f6
      • 2.Bh2#
  • Tries
    • 1.Ra6?
      • threat
        • 2.Qe4#
      • 1...Kxd5
        • 2.Qd4#
        • 2.Qe4#
      • 1...f5
        • 2.Qd4#
      • 1...d6!
    • 1.Qe4+?
      • 1...Kd6
        • 2.Bh2#
      • 1...Kf6!
    • 1.Qg5+?
      • 1...Kd6
        • 2.Bh2#
      • 1...f5!
    • 1.d6+?
      • 1...Kf6
        • 2.Bd4#
        • 2.Qf5#
      • 1...Kxd6!
  • Keys
    • 1.Bc5!
      • 1...Kxd5
        • 2.Qe4#
      • 1...Kf6
        • 2.Qf4#
      • 1...f5
        • 2.Qd4#
      • 1...d6
        • 2.Bd4#
      • 1...f6
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::B(A)
    • P(c);SBLOCK::B(A)
  • Tries
    • Try
      • R(D);
      • Threat
        • QAR1(C)
      • Vars
        • P(c);SBLOCK::QAB1(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::B(A)
      • Refutation
        • P(c);P_SPINP(c)
    • Try
      • P(E);CHECK
      • Refutation
        • K(a);S_FLIGHT,XP(E)
  • Actual
    • B(A);
    • Vars
      • K(a);N_GUARD,P-FLIGHT,XP(E)::QAB1(C)
      • K(a);N_GUARD,S_FLIGHT::QAR2(C)
      • P(c);SBLOCK::QAB1(C)
      • P(b);SBLOCK::B(A)
      • P(c);SBLOCK::QAR1(C)
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