MESON Chess Problem Database

Problem Display
PID: 158555 (2B1K2n/5P2/2Pp2P1/Nq1kN3/1p4P1/R2P1Pr1/8/B1Q5 w - - 0 1)

Mendes de Moraes Filho, Feliciano

Chess, 1955

2B1K2n/5P2/2Pp2P1/Nq1kN3/1p4P1/R2P1Pr1/8/B1Q5

#2

13 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd3
      • 2.Rxd3#
    • 1...Qa4
      • 2.Qc4#
    • 1...Qc4
      • 2.Qxc4#
    • 1...Qxc6+
      • 2.Qxc6#
    • 1...Qxa5
      • 2.Rxa5#
      • 2.Qc4#
    • 1...Qb6
      • 2.Qc4#
    • 1...Qb7
      • 2.Qc4#
    • 1...Qb8
      • 2.Qc4#
  • Tries
    • 1.f8S?
      • threat
        • 2.Be6#
      • 1...Qxc6+
        • 2.Qxc6#
      • 1...Qc4
        • 2.Qxc4#
      • 1...Qb8
        • 2.Qc4#
      • 1...dxe5!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Sec4#
      • 1...Qxc6+
        • 2.Sexc6#
      • 1...Kc5
        • 2.Sd7#
      • 1...Qxd3
        • 2.Sxd3#
      • 1...Qxa5
        • 2.Rxa5#
      • 1...Rxf3
        • 2.Sxf3#
      • 1...Rxg4
        • 2.Sxg4#
      • 1...Sxg6
        • 2.Sxg6#
      • 1...Sxf7
        • 2.Sxf7#
      • 1...dxe5
        • 2.Qxe5#
      • 1...Qc4
        • 2.Sexc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 7
    • REMOVED MATES = 4
  • Sets
    • Q(c);N_PINP(I),OGATE,XP(D)::R(C),XQ(c)
    • Q(c);N_GUARD::QAB1(B)
    • Q(c);N_GUARD,N_PINP(I)::QAB1(B),XQ(c)
    • Q(c);CHECK,OGATE,XP(I)::QAB1(B),XQ(c)
    • Q(c);N_GUARD,N_PINP(I)::QAB1(B)
    • Q(c);N_GUARD,N_PINP(I),P_PINB(L)::QAB1(B)
  • Tries
    • Try
      • P(K);
      • Threat
        • B(L)
      • Vars
        • Q(c);CHECK,OGATE,XP(I)::QAB1(B),XQ(c)
        • Q(c);N_GUARD,N_PINP(I)::QAB1(B),XQ(c)
        • Q(c);N_GUARD,N_PINP(I),P_PINB(L)::QAB1(B)
      • Refutation
        • P(e);XS(H)
  • Actual
    • Q(B);
    • Threat
      • QAR(B)+S(H)
    • Vars
      • Q(c);CHECK,XP(I)::QAR(B)+S(H),XQ(c)
      • K(d);P-FLIGHT::QAR(B)+S(H),DCHECK
      • Q(c);N_PINP(I),XP(D)::QAR(B)+S(H),XQ(c)
      • Q(c);N_PINP(I),OGATE,XS(G)::R(C),XQ(c)
      • R(a);XP(E)::QAR(B)+S(H),XR(a)
      • R(a);XP(F)::QAR(B)+S(H),XR(a)
      • S(f);XP(J)::QAR(B)+S(H),XS(f)
      • S(f);XP(K)::QAR(B)+S(H),XS(f)
      • P(e);OGATE,P_SPINP(e),XS(H)::QAR1(B),XP(e)
      • Q(c);N_PINP(I)::QAR(B)+S(H),XQ(c)
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