MESON Chess Problem Database

Problem Display
PID: 147780 (3R4/Np5K/3R4/p4Q2/pk6/n2n4/P1bP4/4BB2 w - - 0 1)

Mendes de Moraes Filho, Feliciano

Source?, 0000

3R4/Np5K/3R4/p4Q2/pk6/n2n4/P1bP4/4BB2

#2

9 + 7

35 L'Italia Scacchistica 1930

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Rd4#
    • 1...Sc1
      • 2.d3#
      • 2.d4#
    • 1...Sb2
      • 2.d3#
      • 2.d4#
    • 1...Sf2
      • 2.d3#
      • 2.d4#
    • 1...Sf4
      • 2.d3#
      • 2.d4#
    • 1...Sc5
      • 2.d3#
      • 2.d4#
    • 1...Se5
      • 2.d4#
  • Tries
    • 1.Sc6+?
      • 1...Kc4
        • 2.Rd4#
        • 2.Qd5#
      • 1...bxc6!
    • 1.Rb6+?
      • 1...Kc4
        • 2.Qc8#
        • 2.Qd5#
      • 1...Sb5!
    • 1.Qe4+?
      • 1...Kc5
        • 2.Qd4#
      • 1...Sc4!
    • 1.Qxa5+?
      • 1...Kc4
        • 2.Rd4#
        • 2.Rc8#
        • 2.Qc3#
      • 1...Kxa5!
    • 1.Qc5+?
      • 1...Sxc5+
        • 2.d3#
      • 1...Kxc5!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Rd4#
      • 1...Sc1+
        • 2.Rg6#
      • 1...Sxe1+
        • 2.Rg6#
      • 1...Sb2+
        • 2.Rg6#
      • 1...Sf2+
        • 2.Rg6#
      • 1...Sf4+
        • 2.Rg6#
      • 1...Sc5+
        • 2.d3#
      • 1...Se5+
        • 2.Rg6#
      • 1...Kc4
        • 2.Rd4#
      • 1...Kc5
        • 2.Rc6#
      • 1...Sc4
        • 2.Rb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • K(e);P-FLIGHT,P_SPINS(c)::R1(F)
    • S(c);OGATE,P_PINQ(E)::B(A)+P(D)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • P(g);XS(G)
    • Try
      • R(F);CHECK
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • Q(E);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB1(E)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • Q(E);CHECK,XP(f)
      • Refutation
        • K(e);S_FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • S(c);CHECK,OGATE,SBLOCK,XQ(E)::B(A)+P(D)
      • Refutation
        • K(e);S_FLIGHT,XQ(E)
  • Actual
    • Q(E);
    • Threat
      • QAB(E)+R(F),DCHECK
    • Vars
      • S(c);CHECK,N_GUARD::QAB(E)+R(F)
      • S(c);CHECK,N_GUARD,XB(A)::QAB(E)+R(F)
      • S(c);CHECK,OGATE,SBLOCK::B(A)+P(D)
      • K(e);P-FLIGHT,P_SPINS(c)::R1(F)
      • K(e);S_FLIGHT::QAB(E)+R(F),DCHECK
      • S(b);SBLOCK::QAB(E)+R(F),DCHECK
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