MESON Chess Problem Database

Problem Display
PID: 252995 (3BR3/nPNk4/P5p1/1pP2q2/1P6/3B3Q/2R5/1K6 w - - 0 1)

de Vuyst, Jan

Probleemblad, 1983

3BR3/nPNk4/P5p1/1pP2q2/1P6/3B3Q/2R5/1K6

#2

11 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.b8S#
    • 1...Qe6
      • 2.Qxe6#
    • 1...Sc8
      • 2.Bxb5#
      • 2.b8S#
  • Tries
    • 1.Bxf5+?
      • 1...Kc6
        • 2.Be4#
        • 2.Bd7#
        • 2.Qg2#
        • 2.Qh1#
        • 2.Qf3#
        • 2.b8S#
      • 1...gxf5!
    • 1.Re7+?
      • 1...Kc6
        • 2.b8S#
      • 1...Kxd8!
    • 1.Qxf5+?
      • 1...Kc6
        • 2.Be4#
        • 2.Qe6#
        • 2.Qd5#
        • 2.b8S#
      • 1...gxf5!
    • 1.Qh7+?
      • 1...Kc6
        • 2.b8S#
      • 1...Qf7!
  • Keys
    • 1.Rd2!
      • threat
        • 2.Be4#
      • 1...Kc6
        • 2.b8S#
      • 1...Qxh3
        • 2.Bxb5#
      • 1...Sc6
        • 2.Bxf5#
      • 1...Sc8
        • 2.b8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(e);N_GUARD,N_SPINQ(b),S_FLIGHT::P=S
    • Q(b);OGATE::QAB1(D),XQ(b)
  • Tries
    • Try
      • B(C);CHECK,XQ(b)
      • Refutation
        • P(c);P_SPINP(c),XB(C)
    • Try
      • R(K);CHECK
      • Vars
        • K(e);N_GUARD,N_SPINQ(b),S_FLIGHT::P=S
      • Refutation
        • K(e);N_SPINQ(b),P-FLIGHT,XB(J)
    • Try
      • Q(D);CHECK,XQ(b)
      • Refutation
        • P(c);XQ(D)
    • Try
      • Q(D);CHECK,N_PINQ(b)
      • Vars
        • K(e);N_GUARD,S_CUTQ(b),S_FLIGHT::P=S
      • Refutation
        • Q(b);P_SPINQ(b)
  • Actual
    • R(B);P_SPINB(C)
    • Threat
      • R(B)+B(C)
    • Vars
      • K(e);N_GUARD,N_SPINQ(b),S_FLIGHT::P=S
      • Q(b);N_PINB(C),N_SPINQ(b),XQ(D)::R(B)+B(C),DCHECK,XP(a)
      • S(d);SBLOCK::R(B)+B(C),DCHECK,XQ(b)
      • S(d);SBLOCK::P=S
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Developed and maintained by Brian Stephenson.
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