MESON Chess Problem Database

Problem Display
PID: 258256 (1Q6/3B4/8/8/3kpp2/2N5/8/B4K2 w - - 0 1)

Anonymous

English Mechanic and World of Science, 1890

(First published on Fri Oct 3 1890)

1Q6/3B4/8/8/3kpp2/2N5/8/B4K2

#2

5 + 3

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Qd6+?
      • 1...Kc4
        • 2.Be6#
      • 1...Ke3!
    • 1.Qb5?
      • threat
        • 2.Sd1#
        • 2.Sd5#
      • 1...e3
        • 2.Qd5#
      • 1...Ke3!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Sa4#
      • 1...Kd3
        • 2.Sb1#
      • 1...Ke3
        • 2.Sb1#
      • 1...Kc5
        • 2.Sxe4#
      • 1...Ke5
        • 2.Sb5#
      • 1...e3
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT::B(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);SBLOCK::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);
    • Threat
      • B(A)+S(C)
    • Vars
      • K(a);N_GUARD,P-FLIGHT::QAR(E)+S(C)
      • K(a);N_GUARD,S_FLIGHT::QAR(E)+S(C)
      • K(a);N_GUARD,S_FLIGHT::S(C),XP(b)
      • K(a);N_GUARD,S_FLIGHT::B(A)+S(C)
      • P(b);SBLOCK::QAR1(E)
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