MESON Chess Problem Database

Problem Display
PID: 171033 (2R2K2/1p5Q/1B1p1p2/3k4/3NN1n1/4r3/2n4b/1B6 w - - 0 1)

Faria, Oswaldo

Sonnenfeld, Felix Alexander

Variantim, 1990

2R2K2/1p5Q/1B1p1p2/3k4/3NN1n1/4r3/2n4b/1B6

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qf5#
    • 1...Be5
      • 2.Qxb7#
    • 1...Se5
      • 2.Sxf6#
  • Tries
    • 1.Sc3+?
      • 1...Ke5
        • 2.Qf5#
      • 1...Rxc3!
    • 1.Sxf6+?
      • 1...Ke5
        • 2.Qf5#
      • 1...Sxf6!
    • 1.Ba2+?
      • 1...Ke5
        • 2.Qf5#
      • 1...Rb3!
    • 1.Qf5+?
      • 1...Se5
        • 2.Sxf6#
      • 1...Be5!
    • 1.Qe7?
      • threat
        • 2.Qe6#
      • 1...Rxe4
        • 2.Ba2#
      • 1...Be5
        • 2.Qxb7#
      • 1...Se5
        • 2.Sxf6#
      • 1...Sxd4!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qe6#
      • 1...Kxe4
        • 2.Qf5#
      • 1...Ke5
        • 2.Qf5#
      • 1...Rxe4
        • 2.Qb5#
      • 1...Sxd4
        • 2.Rc5#
      • 1...Be5
        • 2.Qxb7#
      • 1...Se5
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(e);P-FLIGHT::QAR1(E)
    • B(b);SBLOCK::QAB(E),XP(h)
    • S(d);N_GUARD,SBLOCK::S(C),XP(g)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(E)
      • Refutation
        • R(c);XS(C)
    • Try
      • S(C);CHECK,XP(g)
      • Vars
        • K(e);P-FLIGHT::QAR1(E)
      • Refutation
        • S(d);XS(C)
    • Try
      • B(A);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(E)
      • Refutation
        • R(c);P_SPINR(c)
    • Try
      • Q(E);CHECK
      • Vars
        • S(d);P_SPINS(d)::S(C),XP(g)
      • Refutation
        • B(b);P_SPINB(b)
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • R(c);N_GUARD,XS(C)::B(A)
        • B(b);SBLOCK::QAB(E),XP(h)
        • S(d);N_GUARD::S(C),XP(g)
      • Refutation
        • S(a);XS(B)
  • Actual
    • Q(E);P_PINP(f)
    • Threat
      • QAB1(E)
    • Vars
      • K(e);N_SPINP(f),P_SPINS(a),S_FLIGHT,XS(C)::QAB1(E)
      • K(e);N_SPINP(f),P-FLIGHT::QAR1(E)
      • R(c);SBLOCK,XS(C)::QAR2(E)
      • S(a);SBLOCK,XS(B)::R1(F)
      • B(b);SBLOCK::QAB(E),XP(h)
      • S(d);N_GUARD,SBLOCK::S(C),XP(g)
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