MESON Chess Problem Database

Problem Display
PID: 215674 (1b4QK/3N1pPp/1P5r/1P1k1P1b/4n2r/BP1NPP2/B6q/2R5 w - - 0 1)

Witt, Andreas

Badische Neueste Nachrichten, 1997

1b4QK/3N1pPp/1P5r/1P1k1P1b/4n2r/BP1NPP2/B6q/2R5

#2

14 + 9

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.b4#
    • 1...Rxb6
      • 2.Sxb6#
    • 1...Rd6
      • 2.Sb4#
    • 1...Bd6
      • 2.Qa8#
    • 1...Sd6
      • 2.Rc5#
  • Tries
    • 1.Qxf7+?
      • 1...Re6
        • 2.Qxe6#
      • 1...Bxf7!
    • 1.Qf8?
      • threat
        • 2.Sb4#
      • 1...Qd6
        • 2.b4#
      • 1...Bd6
        • 2.Qa8#
      • 1...Sd2
        • 2.Rc5#
        • 2.Qc5#
      • 1...Sf2
        • 2.Rc5#
        • 2.Qc5#
      • 1...Sc3
        • 2.Qc5#
      • 1...Sg3
        • 2.Rc5#
        • 2.Qc5#
      • 1...Sc5
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...Sg5
        • 2.Rc5#
        • 2.Qc5#
      • 1...Sd6
        • 2.Rc5#
      • 1...Sf6
        • 2.Rc5#
        • 2.Qc5#
      • 1...Qd2!
  • Keys
    • 1.Qd8!
      • threat
        • 2.Sf6#
      • 1...Qd6
        • 2.b4#
      • 1...Rd6
        • 2.Sb4#
      • 1...Rf6
        • 2.Sxf6#
      • 1...Bd6
        • 2.Qa8#
      • 1...Sd6
        • 2.Rc5#
      • 1...Sf6
        • 2.Sxf6#
      • 1...f6
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(a);N_GUARD,SBLOCK::B(B)+P(D)
    • R(f);XP(J)::S(K),XR(f)
    • R(f);SBLOCK::S(E)
    • B(i);OGATE::QAB(M)
    • S(b);N_GUARD,SBLOCK::R1(A)
  • Tries
    • Try
      • Q(M);CHECK,XP(g)
      • Vars
        • R(f);N_GUARD,P_SPINR(f)::QAB1(M),XR(f)
      • Refutation
        • B(e);XQ(M)
    • Try
      • Q(M);N_PINP(g)
      • Threat
        • S(E)
      • Vars
        • Q(a);N_GUARD::B(B)+P(D)
        • B(i);OGATE::QAB(M)
        • S(b);N_GUARD::QAR1(M)
        • S(b);N_GUARD::R1(A)
      • Refutation
        • Q(a);
  • Actual
    • Q(M);N_PINP(g)
    • Threat
      • QAR(M)+S(K),DCHECK
    • Vars
      • Q(a);N_GUARD,SBLOCK::B(B)+P(D)
      • R(f);SBLOCK::S(E)
      • R(f);::QAR(M)+S(K),DCHECK,XR(f)
      • B(i);OGATE::QAB(M)
      • S(b);N_GUARD,SBLOCK::R1(A)
      • S(b);::QAR(M)+S(K),DCHECK,XS(b)
      • P(g);::QAR(M)+S(K),DCHECK,XP(g)
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