MESON Chess Problem Database

Problem Display
PID: 90074 (1Q6/1p6/bpp1P3/5N2/P1kBBp2/1pbN4/1Pn5/1n5K w - - 0 1)

Rothwell, Stephen

Die Schwalbe, 1997

1Q6/1p6/bpp1P3/5N2/P1kBBp2/1pbN4/1Pn5/1n5K

#2

9 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bb4
      • 2.Se5#
    • 1...Bxd4
      • 2.Sd6#
    • 1...Sb4
      • 2.Se5#
    • 1...Sxd4
      • 2.Sd6#
  • Tries
    • 1.Qd6?
      • threat
        • 2.Se5#
      • 1...c5
        • 2.Qd5#
      • 1...Bxd4!
    • 1.Qf8?
      • threat
        • 2.Se5#
      • 1...Bxd4
        • 2.Sd6#
      • 1...c5!
    • 1.Qg8?
      • threat
        • 2.e7#
      • 1...Sxd4
        • 2.Sd6#
      • 1...Sb4
        • 2.Se5#
      • 1...Se3!
    • 1.e7?
      • threat
        • 2.Qg8#
      • 1...Sxd4
        • 2.Sd6#
      • 1...Sb4
        • 2.Se5#
      • 1...Se3!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Sd6#
      • 1...Bb4
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • B(d);SBLOCK::S(C)
    • B(d);SBLOCK,XB(E)::S(G)
    • S(b);SBLOCK::S(C)
    • S(b);SBLOCK,XB(E)::S(G)
  • Tries
    • Try
      • Q(I);
      • Threat
        • S(C)
      • Vars
        • P(i);N_GUARD::QAB1(I)
      • Refutation
        • B(d);XB(E)
    • Try
      • Q(I);
      • Threat
        • S(C)
      • Vars
        • B(d);SBLOCK,XB(E)::S(G)
      • Refutation
        • P(i);
    • Try
      • Q(I);
      • Threat
        • QAB(I)+P(H)
      • Vars
        • S(b);SBLOCK,XB(E)::S(G)
        • S(b);SBLOCK::S(C)
      • Refutation
        • S(b);
    • Try
      • P(H);
      • Threat
        • QAB(I)
      • Vars
        • S(b);SBLOCK,XB(E)::S(G)
        • S(b);SBLOCK::S(C)
      • Refutation
        • S(b);
  • Actual
    • Q(I);
    • Threat
      • S(G)
    • Vars
      • B(d);SBLOCK::S(C)
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