MESON Chess Problem Database

Problem Display
PID: 258261 (4Q1K1/8/B7/3kb3/1p6/1N1p2P1/3p4/3N4 w - - 0 1)

Anonymous

English Mechanic and World of Science, 1890

(First published on Fri Nov 14 1890)

4Q1K1/8/B7/3kb3/1p6/1N1p2P1/3p4/3N4

#2

6 + 5

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Se3#
  • Tries
    • 1.Qd7+?
      • 1...Ke4
        • 2.Sxd2#
        • 2.Bb7#
        • 2.Qxd3#
      • 1...Bd6!
    • 1.Qe6+?
      • 1...Ke4
        • 2.Bb7#
      • 1...Kxe6!
  • Keys
    • 1.Bc8!
      • 1...Kc4
        • 2.Be6#
      • 1...Ke4
        • 2.Qc6#
      • 1...Kd6
        • 2.Qd7#
      • 1...Bxg3
        • 2.Qe6#
      • 1...Ba1
        • 2.Qe6#
      • 1...Bb2
        • 2.Qe6#
      • 1...Bc3
        • 2.Qe6#
      • 1...Bd4
        • 2.Qe6#
      • 1...Bf4
        • 2.Qe6#
      • 1...Bd6
        • 2.Se3#
      • 1...Bf6
        • 2.Qe6#
      • 1...Bc7
        • 2.Qe6#
      • 1...Bg7
        • 2.Qe6#
      • 1...Bb8
        • 2.Qe6#
      • 1...Bh8
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 14
    • REMOVED MATES = 0
  • Sets
    • B(e);SBLOCK::S(A)
  • Tries
    • Try
      • Q(E);CHECK
      • Refutation
        • B(e);P_SPINB(e)
    • Try
      • Q(E);CHECK
      • Vars
        • K(d);N_GUARD,P_SPINB(e),S_FLIGHT::B(D)
      • Refutation
        • K(d);S_FLIGHT,XQ(E)
  • Actual
    • B(D);
    • Vars
      • K(d);N_GUARD,S_FLIGHT::B(D)
      • K(d);N_GUARD,P_SPINB(e),S_FLIGHT::QAB(E)
      • K(d);N_GUARD,P-FLIGHT,S_CUTB(e)::QAR1(E)
      • B(e);XP(C)::QAB1(E)
      • B(e);::QAB1(E)
      • B(e);SBLOCK::S(A)
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