MESON Chess Problem Database

Problem Display
PID: 142432 (2B1R1b1/1N3n2/3pN1p1/Q5B1/K3k2r/8/4P2b/8 w - - 0 1)

Mendes de Moraes Filho, Feliciano

British Chess Magazine, 1934

2B1R1b1/1N3n2/3pN1p1/Q5B1/K3k2r/8/4P2b/8

#2

8 + 7

14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Sxd6#
  • Tries
    • 1.Sf4+?
      • 1...Kd4
        • 2.Qb4#
      • 1...Se5!
    • 1.Sc7+?
      • 1...Kd4
        • 2.Qb4#
      • 1...Be5
        • 2.Qb4#
        • 2.Qd5#
      • 1...Se5!
    • 1.Sxd6+?
      • 1...Bxd6
        • 2.Bb7#
      • 1...Sxd6!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Sec5#
      • 1...Ke5+
        • 2.Sf4#
      • 1...Kf5+
        • 2.Sd4#
      • 1...Be5
        • 2.Qd3#
      • 1...Se5
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD,S_CUTB(a)::S(F),XP(d)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(C)
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • S(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(C)
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • S(F);CHECK,XP(d)
      • Vars
        • B(a);XS(F)::B(G)
      • Refutation
        • S(f);XS(F)
  • Actual
    • Q(C);
    • Threat
      • R(H)+S(E),DCHECK
    • Vars
      • K(b);CHECK,P-FLIGHT::R(H)+S(E)
      • K(b);CHECK,S_FLIGHT::B(G)+S(E),DCHECK
      • B(a);SBLOCK::QAB1(C)
      • S(f);N_GUARD,SBLOCK,S_CUTB(a)::S(F),XP(d)
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