MESON Chess Problem Database

Problem Display
PID: 12332 (1B6/8/2K2N2/2nBR2P/3p1k1p/5P2/4PqbP/6Q1 w - - 0 1)

Ahues, Herbert Siegfried Oskar

2nd Prize, Tidskrift for Schack, 1977

1B6/8/2K2N2/2nBR2P/3p1k1p/5P2/4PqbP/6Q1

#2

10 + 6

3750 FIDE Album (1977-1979) 1984

SOLUTION

  • SOUND
  • Sets
    • 1...Qg3
      • 2.Qc1#
    • 1...Bf1
      • 2.Qg4#
      • 2.Qg5#
    • 1...Bh1
      • 2.Qg4#
      • 2.Qg5#
    • 1...Bxf3
      • 2.Qg5#
    • 1...Bh3
      • 2.Qg5#
  • Tries
    • 1.Be4?
      • threat
        • 2.Sd5#
      • 1...Qxf3
        • 2.Rxc5#
        • 2.Rd5#
        • 2.Rf5#
      • 1...Ke3!
    • 1.h6?
      • threat
        • 2.Sh5#
      • 1...Qxf3
        • 2.Rh5#
      • 1...Bxf3
        • 2.Qg5#
      • 1...Se4!
  • Keys
    • 1.Be6!
      • threat
        • 2.Sd5#
      • 1...Qxf3+
        • 2.Rd5#
      • 1...Bxf3+
        • 2.Re4#
      • 1...Qxe2
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(a);N_GUARD::QAB(A)
    • B(b);OGATE,P_PINB(E),XP(D)::QAB1(A)
    • B(b);OGATE::QAB1(A)
  • Tries
    • Try
      • B(E);
      • Threat
        • S(I)
      • Refutation
        • K(d);P_SPINQ(a),S_FLIGHT
    • Try
      • P(G);
      • Threat
        • S(I)
      • Vars
        • Q(a);P_PINB(E),XP(D)::B(J)+R(F)
        • B(b);OGATE,P_PINB(E),XP(D)::QAB1(A)
      • Refutation
        • S(f);
  • Actual
    • B(E);P_SPINP(D)
    • Threat
      • S(I)
    • Vars
      • Q(a);CHECK,XP(D)::B(J)+R(F)
      • B(b);CHECK,XP(D)::B(J)+R(F),DCHECK
      • Q(a);XP(B)::B(J)+R(F),DCHECK
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