MESON Chess Problem Database

Problem Display
PID: 56666 (3B4/3pN3/5p2/4k3/3p4/3K3P/B6P/2Q5 w - - 0 1)

Lansquenet, Alfred

Daily News, 1887

(First published on Sat Feb 5 1887)

3B4/3pN3/5p2/4k3/3p4/3K3P/B6P/2Q5

#2

7 + 4

797 Bulletin de la FFE 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qc7#
  • Tries
    • 1.Sg6+?
      • 1...Kd6
        • 2.Bc7#
        • 2.Be7#
        • 2.Qc7#
      • 1...Kf5!
    • 1.Qe3+?
      • 1...Kd6
        • 2.Qxd4#
      • 1...dxe3!
    • 1.Qe1+?
      • 1...Kf4
        • 2.Qg3#
      • 1...Kd6!
    • 1.Qg1?
      • threat
        • 2.Qxd4#
        • 2.Qg3#
      • 1...Kf4
        • 2.Qg3#
      • 1...Kd6
        • 2.Qxd4#
      • 1...f5
        • 2.Qxd4#
      • 1...d5!
    • 1.Qc5+?
      • 1...Kf4
        • 2.Qf5#
      • 1...d5!
  • Keys
    • 1.Qc6!
      • 1...Kf4
        • 2.Qxf6#
      • 1...dxc6
        • 2.Bc7#
      • 1...d6
        • 2.Qe4#
      • 1...f5
        • 2.Sg6#
      • 1...d5
        • 2.Bc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • K(b);S_FLIGHT::QAB1(A)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(A),XP(a)
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
        • K(b);S_FLIGHT::QAR2(A),XP(a)
        • P(c);::QAB1(A),XP(a)
      • Refutation
        • P(d);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • P(d);P_SPINP(d)
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT::QAR2(A),XP(c)
      • P(d);N_GUARD,XQ(A)::B(G)
      • P(d);SBLOCK::QAR1(A)
      • P(c);SBLOCK::S(F)
      • P(d);N_GUARD::B(G)
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