MESON Chess Problem Database

Problem Display
PID: 252635 (2K5/B1p4Q/r3n3/r3k3/R3N1R1/3p4/BNnq4/8 w - - 0 1)

Felin, Carlos A

SEPA-80 JT (Problemas), 2013-2014

2K5/B1p4Q/r3n3/r3k3/R3N1R1/3p4/BNnq4/8

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Sxd3#
    • 1...Qe1
      • 2.Sxd3#
    • 1...Qb4
      • 2.Sxd3#
    • 1...Qf4
      • 2.Sxd3#
    • 1...Qg5
      • 2.Sxd3#
    • 1...Qh6
      • 2.Sxd3#
    • 1...Qf2
      • 2.Sxd3#
    • 1...Qg2
      • 2.Sxd3#
    • 1...Qh2
      • 2.Sxd3#
    • 1...Rd5
      • 2.Sc4#
    • 1...Sf4
      • 2.Rg5#
  • Tries
    • 1.Qg7+?
      • 1...Kf5
        • 2.Sg3#
      • 1...Sxg7!
    • 1.Qh8+?
      • 1...Kf5
        • 2.Sg3#
      • 1...Sg7!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qf6#
      • 1...Sc5
        • 2.Qd5#
      • 1...Qf4
        • 2.Sxd3#
      • 1...Qg5
        • 2.Sxd3#
      • 1...Qh6
        • 2.Sxd3#
      • 1...Qf2
        • 2.Sxd3#
      • 1...Sed4
        • 2.Sc4#
      • 1...Sf4
        • 2.Rg5#
      • 1...Sg5
        • 2.Sc4#
      • 1...Sg7
        • 2.Sc4#
      • 1...Sd8
        • 2.Sc4#
      • 1...Sf8
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 6
  • Sets
    • Q(b);N_GUARD::S(B),XP(c)
    • R(d);SBLOCK::S(B)
    • S(g);N_GUARD,SBLOCK,S_CUTQ(b)::R(E)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • K(e);N_GUARD,P-FLIGHT,S_CUTS(g)::S(D)
      • Refutation
        • S(g);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(e);N_GUARD,P-FLIGHT,S_CUTS(g)::S(D)
      • Refutation
        • S(g);P_SPINS(g)
  • Actual
    • Q(G);
    • Threat
      • QAB1(G)
    • Vars
      • S(g);OGATE::QAR1(G)
      • Q(b);N_GUARD::S(B),XP(c)
      • S(g);::S(B)
      • S(g);N_GUARD,S_CUTQ(b)::R(E)
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