MESON Chess Problem Database

Problem Display
PID: 56748 (4k3/3p1p1N/8/B3K3/P2Q4/8/8/8 w - - 0 1)

Demasure, Armand

Bulletin de la FFE, 1924

4k3/3p1p1N/8/B3K3/P2Q4/8/8/8

#2

5 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Sf6+?
      • 1...Ke7
        • 2.Qd6#
      • 1...Kf8!
    • 1.Qd6?
      • threat
        • 2.Sf6#
        • 2.Qf8#
      • 1...f5
        • 2.Qf8#
      • 1...f6+!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Kd4#
        • 2.Kf4#
        • 2.Kd5#
        • 2.Kf5#
        • 2.Kd6#
        • 2.Kf6#
      • 1...d6+
        • 2.Kxd6#
      • 1...f6+
        • 2.Kxf6#
      • 1...Ke7
        • 2.Kd5#
      • 1...d5
        • 2.Kd6#
      • 1...f5
        • 2.Kf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::QAR1(B)
      • Refutation
        • P(b);CHECK
  • Actual
    • Q(B);
    • Threat
      • DUALS(6)
    • Vars
      • P(a);CHECK::QAR(B)+K(D),XP(a)
      • P(b);CHECK::QAR(B)+K(D),XP(b)
      • K(c);P-FLIGHT::QAR(B)+K(D)
      • P(a);::QAR(B)+K(D)
      • P(b);::QAR(B)+K(D)
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