MESON Chess Problem Database

Problem Display
PID: 258067 (3Q4/3pN1K1/4k3/6p1/8/2N5/8/8 w - - 0 1)

Leibovici, Paul

Die Schwalbe, 1931

3Q4/3pN1K1/4k3/6p1/8/2N5/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Qxd7+?
      • 1...Ke5
        • 2.Sg6#
      • 1...Kxd7!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Qf6#
      • 1...Kf5
        • 2.Qxd7#
      • 1...Kd6
        • 2.Qb6#
      • 1...d5
        • 2.Qxd5#
      • 1...d6
        • 2.Qc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);CHECK,XP(c)
      • Vars
        • K(b);N_GUARD,P-FLIGHT::S(B)
      • Refutation
        • K(b);S_FLIGHT,XQ(D)
  • Actual
    • S(B);
    • Threat
      • QAR1(D)
    • Vars
      • K(b);N_GUARD,S_FLIGHT::QAB(D),XP(c)
      • K(b);N_GUARD,P-FLIGHT,P_SPINP(c)::QAR2(D)
      • P(c);OGATE::QAB1(D),XP(c)
      • P(c);OGATEB,SBLOCK::QAB(D)
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