MESON Chess Problem Database

Problem Display
PID: 110040 (n7/1p6/1B6/3p2QK/PPkrr1N1/4P3/N1P5/8 w - - 0 1)

Campo, Achille

Fanfulla da Lodi, 1886-1888

n7/1p6/1B6/3p2QK/PPkrr1N1/4P3/N1P5/8

#2

9 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe3
      • 2.Sxe3#
    • 1...Rf4
      • 2.Se5#
    • 1...Re5
      • 2.Sxe5#
  • Tries
    • 1.Qe7?
      • threat
        • 2.Qc5#
      • 1...Re5+
        • 2.Sxe5#
      • 1...Rxe7!
  • Keys
    • 1.Qf4!
      • 1...Re5+
        • 2.Sxe5#
      • 1...Rxe3
        • 2.Sxe3#
        • 2.Qxd4#
      • 1...Rxf4
        • 2.Se5#
      • 1...Sxb6
        • 2.Qc7#
      • 1...Rd1
        • 2.Se5#
      • 1...Rd2
        • 2.Se5#
      • 1...Rd3
        • 2.Se5#
      • 1...Re6
        • 2.Qxd4#
      • 1...Re7
        • 2.Qxd4#
      • 1...Re8
        • 2.Qxd4#
      • 1...Sc7
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • R(c);XP(C)::S(F),XR(c)
    • R(c);N_GUARD::S(F)
    • R(c);N_GUARD,P_PINQ(G)::S(F),XR(c)
  • Tries
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • R(c);CHECK,N_GUARD::S(F),XR(c)
      • Refutation
        • R(c);XQ(G)
  • Actual
    • Q(G);
    • Vars
      • R(c);CHECK,N_GUARD,P_SPINR(b)::S(F),XR(c)
      • R(c);N_GUARD,XQ(G)::S(F)
      • S(f);N_GUARD,XB(I)::QAR(G)
      • R(b);P_SPINR(c)::S(F)
      • R(c);OGATE,P_SPINR(b)::QAR1(G),XR(b)
      • S(f);N_GUARD::QAR(G),XS(f)
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