MESON Chess Problem Database

Problem Display
PID: 133061 (3N4/3p2K1/2p3B1/2P1k3/1q6/2PRNRP1/4b3/8 w - - 0 1)

Ferron de la Fuente, Ernesto

Probleemblad, 1965

3N4/3p2K1/2p3B1/2P1k3/1q6/2PRNRP1/4b3/8

#2

9 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Qa3
      • 2.Sc4#
      • 2.Sg4#
    • 1...Qxc3
      • 2.Sg4#
    • 1...Qa5
      • 2.Sc4#
      • 2.Sg4#
    • 1...Qxc5
      • 2.Sg4#
    • 1...Qb1
      • 2.Sc4#
      • 2.Sg4#
    • 1...Qb2
      • 2.Sc4#
      • 2.Sg4#
    • 1...Qb3
      • 2.Sg4#
    • 1...Qc4
      • 2.Sxc4#
    • 1...Qd4
      • 2.cxd4#
    • 1...Qf4
      • 2.gxf4#
    • 1...Qg4
      • 2.Sxg4#
    • 1...Qb5
      • 2.Sg4#
    • 1...Qb6
      • 2.Sc4#
      • 2.Sg4#
    • 1...Qb7
      • 2.Sc4#
      • 2.Sg4#
    • 1...Qb8
      • 2.Sc4#
      • 2.Sg4#
  • Tries
    • 1.Sxc6+?
      • 1...Ke6
        • 2.Bf5#
        • 2.Bf7#
        • 2.Rd6#
        • 2.Rf6#
      • 1...dxc6!
    • 1.Rd6?
      • threat
        • 2.Sf7#
      • 1...Qb3
        • 2.Sg4#
      • 1...Qf4
        • 2.gxf4#
      • 1...Bc4
        • 2.Sg4#
      • 1...Qc4!
    • 1.Rf6?
      • threat
        • 2.Sf7#
      • 1...Qc4
        • 2.Sxc4#
      • 1...Qb3!
    • 1.cxb4?
      • threat
        • 2.Sc4#
        • 2.Sg4#
      • 1...Bxf3
        • 2.Sc4#
      • 1...d5
        • 2.Sg4#
      • 1...Bxd3!
  • Keys
    • 1.Bf5!
      • threat
        • 2.Sf7#
      • 1...Qg4+
        • 2.Sxg4#
      • 1...Qb3
        • 2.Sg4#
      • 1...Qc4
        • 2.Sxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • Q(b);N_GUARD,XP(A)::S(C)
    • Q(b);N_GUARD,XP(F)::S(C)
    • Q(b);N_GUARD::S(C)
    • Q(b);N_GUARD::S(C),XQ(b)
    • Q(b);OGATE::P(A),XQ(b)
    • Q(b);OGATE::P(E),XQ(b)
    • Q(b);N_GUARD,P_PINB(G)::S(C),XQ(b)
  • Tries
    • Try
      • S(I);CHECK,XP(d)
      • Refutation
        • P(e);XS(I)
    • Try
      • R(B);
      • Threat
        • S(I)
      • Vars
        • Q(b);N_GUARD::S(C)
        • Q(b);OGATE::P(E),XQ(b)
        • B(a);S_CUTQ(b)::S(C)
      • Refutation
        • Q(b);
    • Try
      • R(D);
      • Threat
        • S(I)
      • Vars
        • Q(b);N_GUARD::S(C),XQ(b)
      • Refutation
        • Q(b);
    • Try
      • P(A);XQ(b)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XR(D)::S(C)
        • P(e);::S(C)
      • Refutation
        • B(a);XR(B)
  • Actual
    • B(G);
    • Threat
      • S(I)
    • Vars
      • Q(b);CHECK,N_GUARD::S(C),XQ(b)
      • Q(b);N_GUARD::S(C)
      • Q(b);N_GUARD::S(C),XQ(b)
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