MESON Chess Problem Database

Problem Display
PID: 184412 (3B2K1/5N2/6P1/5k2/2P5/2P2pP1/5P2/4Q3 w - - 0 1)

Benberg, ?

Bulletin Ouvrier des Echecs, 1939

3B2K1/5N2/6P1/5k2/2P5/2P2pP1/5P2/4Q3

#2

9 + 2

15601 Albrecht-Leiss-Degener Collection 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qd2?
      • 1...Ke4
        • 2.Qc2#
        • 2.Qd5#
      • 1...Ke6
        • 2.Qd5#
      • 1...Kxg6
        • 2.Qg5#
      • 1...Kg4!
    • 1.Qe3?
      • 1...Kxg6
        • 2.Qg5#
      • 1...Kg4!
    • 1.Qe5+?
      • 1...Kxg6
        • 2.Qg5#
      • 1...Kg4!
    • 1.Qe7?
      • 1...Kxg6
        • 2.Qg5#
      • 1...Kg4!
  • Keys
    • 1.Qh1!
      • 1...Ke4
        • 2.Qb1#
      • 1...Kg4
        • 2.Sh6#
      • 1...Ke6
        • 2.Qh3#
      • 1...Kxg6
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
        • K(b);S_FLIGHT,XP(F)::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT,XP(F)::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XP(F)::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT,XP(F)::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::QAB(A)
      • K(b);S_FLIGHT::S(G)
      • K(b);S_FLIGHT::QAB(A)
      • K(b);OGATEB,S_FLIGHT,XP(F)::QAB1(A)
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