MESON Chess Problem Database

Problem Display
PID: 16017 (2b1r2n/2n1pP2/2N2kpP/6N1/3b3K/3B4/RQ6/B7 w - - 0 1)

Grimaldi, P

L'Italia Scacchistica, 2000

2b1r2n/2n1pP2/2N2kpP/6N1/3b3K/3B4/RQ6/B7

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rg8
      • 2.fxg8S#
    • 1...Be5
      • 2.Qxe5#
    • 1...Ba6
      • 2.Qf2#
    • 1...Be6
      • 2.Qxd4#
    • 1...Bb7
      • 2.Qf2#
    • 1...Sb5
      • 2.fxe8S#
    • 1...Sd5
      • 2.fxe8S#
    • 1...Sa6
      • 2.fxe8S#
    • 1...Se6
      • 2.fxe8S#
    • 1...Sa8
      • 2.fxe8S#
    • 1...e6
      • 2.Qf2#
  • Tries
    • 1.fxe8Q?
      • threat
        • 2.Qxe7#
        • 2.Qxh8#
      • 1...Sd5
        • 2.Qxh8#
      • 1...Se6
        • 2.Sh7#
        • 2.Qxe7#
      • 1...Sf7
        • 2.Qxf7#
        • 2.Qxe7#
      • 1...e5
        • 2.Sh7#
        • 2.Qe7#
        • 2.Qd8#
        • 2.Qxh8#
      • 1...e6
        • 2.Sh7#
        • 2.Qf2#
        • 2.Qe7#
        • 2.Qd8#
        • 2.Qxh8#
      • 1...Sxe8!
    • 1.f8Q+?
      • 1...Sf7
        • 2.Qg7#
        • 2.Qxf7#
      • 1...Rxf8!
    • 1.f8R+?
      • 1...Sf7
        • 2.Rxf7#
      • 1...Rxf8!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Sh7#
      • 1...Be6
        • 2.Bxd4#
      • 1...Sd5
        • 2.fxe8S#
      • 1...Se6
        • 2.fxe8S#
      • 1...e6
        • 2.Rf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • R(g);OGATE::PXR(g)=S
    • B(a);OGATE::QAB1(C),XB(a)
    • B(f);N_GUARD::QAR(C)
    • B(f);S_CUTP(e)::QAB(C),XB(a)
    • S(d);N_GUARD::PXR(g)=S
    • P(e);S_CUTB(f)::QAR(C)
  • Tries
    • Try
      • P(I);XR(g)
      • Threat
        • DUALS(2)
      • Vars
        • S(d);::QAB(I),XS(h)
      • Refutation
        • S(d);XQ(I)
    • Try
      • P(I);CHECK
      • Refutation
        • R(g);XQ(I)
    • Try
      • P(I);CHECK
      • Vars
        • S(h);N_GUARD,P_SPINS(h)::R1(I),XS(h)
      • Refutation
        • R(g);XR(I)
  • Actual
    • Q(C);
    • Threat
      • S(F)
    • Vars
      • B(f);S_CUTP(e)::B(A),XB(a)
      • S(d);N_GUARD::PXR(g)=S
      • P(e);S_CUTB(f)::R(B)
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