MESON Chess Problem Database

Problem Display
PID: 15700 (5bNk/7N/5PK1/3Q4/8/8/8/8 w - - 0 1)

Banaszek, Marcin

1st HM., Die Schwalbe, 1987

5bNk/7N/5PK1/3Q4/8/8/8/8

#2

5 + 2

2838 Fun with Chess Miniatures 1996
145 StrateGems 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Bg7
      • 2.fxg7#
  • Tries
    • 1.Qf7?
      • 1...Ba3
        • 2.Qg7#
      • 1...Bb4
        • 2.Qg7#
      • 1...Bc5
        • 2.Qg7#
      • 1...Bd6
        • 2.Qg7#
      • 1...Be7
        • 2.Qg7#
      • 1...Bg7
        • 2.Qxg7#
        • 2.fxg7#
      • 1...Bh6!
    • 1.Qa8?
      • 1...Kxg8
        • 2.Qxf8#
      • 1...Ba3
        • 2.Se7#
      • 1...Bb4
        • 2.Se7#
      • 1...Bc5
        • 2.Se7#
      • 1...Bh6
        • 2.Sxh6#
      • 1...Be7
        • 2.Sxe7#
      • 1...Bg7
        • 2.fxg7#
      • 1...Bd6!
  • Keys
    • 1.Qd8!
      • 1...Kxg8
        • 2.Qxf8#
      • 1...Ba3
        • 2.Se7#
      • 1...Bb4
        • 2.Se7#
      • 1...Bc5
        • 2.Se7#
      • 1...Bd6
        • 2.Se7#
      • 1...Bh6
        • 2.Sxh6#
      • 1...Be7
        • 2.Sxe7#
      • 1...Bg7
        • 2.fxg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • B(a);OGATE::P(B),XB(a)
  • Tries
    • Try
      • Q(A);
      • Vars
        • B(a);N_GUARD::QAB1(A)
      • Refutation
        • B(a);
    • Try
      • Q(A);
      • Vars
        • K(b);OGATEB,P-FLIGHT,P_SPINB(a),XS(E)::QAR1(A),XB(a)
        • B(a);::QAR(A)+S(E)
        • B(a);::QAR(A)+S(E),XB(a)
        • B(a);OGATE::P(B),XB(a)
      • Refutation
        • B(a);
  • Actual
    • Q(A);
    • Vars
      • K(b);OGATEB,P-FLIGHT,P_SPINB(a),XS(E)::QAR1(A),XB(a)
      • B(a);::QAR(A)+S(E)
      • B(a);::QAR(A)+S(E),XB(a)
      • B(a);OGATE::P(B),XB(a)
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