MESON Chess Problem Database

Problem Display
PID: 266940 (3B3K/5BR1/n2k3p/3rNP2/2Q3n1/6P1/8/q6b w - - 0 1)

Parcerisa, Jose Antonio Lopez

Zaldo MT (Problemas), 2019

3B3K/5BR1/n2k3p/3rNP2/2Q3n1/6P1/8/q6b

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Qf4#
    • 1...Rc5
      • 2.Qe6#
    • 1...Sb4
      • 2.Qc7#
    • 1...Sc7
      • 2.Qxc7#
    • 1...Sb8
      • 2.Qc7#
  • Tries
    • 1.Be6?
      • threat
        • 2.Sf7#
      • 1...Kxe5
        • 2.Qf4#
      • 1...Qxe5
        • 2.Be7#
      • 1...Rxe5
        • 2.Be7#
        • 2.Rd7#
      • 1...Sxe5
        • 2.Be7#
      • 1...Sc5
        • 2.Bc7#
      • 1...Rc5!
    • 1.Be7+?
      • 1...Kxe5
        • 2.Qf4#
      • 1...Kxe7!
    • 1.Rg6+?
      • 1...Kxe5
        • 2.Qf4#
      • 1...Sf6!
  • Keys
    • 1.Be8!
      • threat
        • 2.Sf7#
      • 1...Kxe5
        • 2.Qf4#
      • 1...Qxe5
        • 2.Qc6#
      • 1...Rxe5
        • 2.Rd7#
      • 1...Sxe5
        • 2.Be7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • K(f);OGATEB,S_FLIGHT,XS(C)::QAB1(B)
    • R(d);OGATE,SBLOCK::QAR1(B)
    • S(e);N_GUARD::QAB1(B)
    • S(e);N_GUARD::QAB1(B),XS(e)
  • Tries
    • Try
      • B(E);
      • Threat
        • S(C)
      • Vars
        • K(f);OGATEB,S_FLIGHT,XS(C)::QAB1(B)
        • Q(a);P_PINR(F),SBLOCK,XS(C)::B(G)
        • S(c);SBLOCK,XS(C)::B(G)
        • S(e);N_GUARD::B(G)
      • Refutation
        • R(d);
    • Try
      • B(G);CHECK
      • Vars
        • K(f);N_GUARD,S_FLIGHT,XS(C)::QAB1(B)
      • Refutation
        • K(f);S_FLIGHT,XB(G)
    • Try
      • R(F);CHECK,P_SPINS(C)
      • Vars
        • K(f);N_GUARD,S_CUTS(c),S_FLIGHT,XS(C)::QAB1(B)
      • Refutation
        • S(c);N_PINS(C),P_SPINS(c)
  • Actual
    • B(E);
    • Threat
      • S(C)
    • Vars
      • K(f);OGATEB,S_FLIGHT,XS(C)::QAB1(B)
      • Q(a);P_PINR(F),SBLOCK,XS(C)::QAR1(B)
      • R(d);SBLOCK,XS(C)::R1(F)
      • S(c);SBLOCK,XS(C)::B(G)
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Developed and maintained by Brian Stephenson.
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