MESON Chess Problem Database

Problem Display
PID: 193737 (1r1n4/p1p1N3/2pPb3/RnB1kpP1/3Nr3/Q1P1pKP1/8/8 w - - 0 1)

Ceriani, Luigi

L'Italia Scacchistica, 1916

1r1n4/p1p1N3/2pPb3/RnB1kpP1/3Nr3/Q1P1pKP1/8/8

#2

10 + 11

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd4
      • 2.Bxd4#
    • 1...Rf4+
      • 2.gxf4#
    • 1...Bd5
      • 2.Sg6#
    • 1...Sxd4+
      • 2.Bxd4#
    • 1...Sxd6
      • 2.Bxd6#
    • 1...Sb7
      • 2.Sdxc6#
    • 1...Sf7
      • 2.Sdxc6#
    • 1...cxd6
      • 2.Bxd6#
  • Keys
    • 1.dxc7!
      • threat
        • 2.Bd6#
      • 1...Rf4+
        • 2.gxf4#
      • 1...Sxd4+
        • 2.Bxd4#
      • 1...Rxd4
        • 2.Bxd4#
      • 1...Sxa3
        • 2.cxb8Q#
        • 2.cxb8B#
      • 1...Sxc3
        • 2.cxb8Q#
        • 2.cxb8B#
      • 1...Bd5
        • 2.Sg6#
      • 1...Sd6
        • 2.Bxd6#
      • 1...Sb7
        • 2.Sdxc6#
      • 1...Sf7
        • 2.Sdxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • R(b);OGATE,XS(E)::B(G),XR(b)
    • R(b);CHECK,OGATE::P(D),XR(b)
    • B(g);SBLOCK::S(J)
    • S(c);CHECK,OGATE,XS(E)::R(F)+B(G),DCHECK,XS(c)
    • S(c);OGATE,XP(I)::R(F)+B(G),DCHECK,XS(c)
    • S(k);N_GUARD::S(E),XP(f)
    • P(i);OGATE,XP(I)::B(G),XP(i)
  • Actual
    • P(I);XP(i)
    • Threat
      • B(G)
    • Vars
      • R(b);CHECK,OGATE::P(D),XR(b)
      • S(c);CHECK,OGATE,XS(E)::R(F)+B(G),DCHECK,XS(c)
      • R(b);OGATE,XS(E)::B(G),XR(b)
      • S(c);N_GUARD,XQ(A)::PXR(j)=Q
      • S(c);N_GUARD,XP(B)::PXR(j)=Q
      • B(g);SBLOCK::S(J)
      • S(c);::R(F)+B(G),DCHECK,XS(c)
      • S(k);N_GUARD::S(E),XP(f)
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