MESON Chess Problem Database

Problem Display
PID: 45866 (3B4/6p1/2pn3R/2QpkP1n/5NR1/2N5/3P3b/1bK5 w - - 0 1)

Livshits, Eduard Yakovlevich

1st Prize, Het Belgisch Schaakbord (L'Echiquier Belge), 1960

3B4/6p1/2pn3R/2QpkP1n/5NR1/2N5/3P3b/1bK5

#2

9 + 8

3749 FIDE Album (1959-1961) 1966

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf5
      • 2.d4#
    • 1...Sxf5
      • 2.Re6#
  • Tries
    • 1.Sd3+?
      • 1...Kxf5
        • 2.Rg5#
      • 1...Bxd3!
    • 1.Qd4+?
      • 1...Kxf5
        • 2.Rg5#
      • 1...Kxd4!
    • 1.Qxd6+?
      • 1...Kxf5
        • 2.Rg5#
        • 2.Qe6#
      • 1...Kd4!
  • Keys
    • 1.Rg5!
      • threat
        • 2.Sg6#
      • 1...Kxf4
        • 2.Qe3#
      • 1...Bxf5
        • 2.Sd3#
      • 1...Bxf4
        • 2.Re6#
      • 1...Sxf4
        • 2.d4#
      • 1...Sxf5
        • 2.Bc7#
      • 1...g6
        • 2.Sxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK,XP(G)::P(B)
    • S(g);SBLOCK,XP(G)::R1(H)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(d);P-FLIGHT,XP(G)::R1(E)
      • Refutation
        • B(a);XS(D)
    • Try
      • Q(F);CHECK,N_PINP(c)
      • Vars
        • K(d);P-FLIGHT,XP(G)::R1(E)
      • Refutation
        • K(d);S_FLIGHT,XQ(F)
    • Try
      • Q(F);CHECK,N_PINP(c),XS(g)
      • Refutation
        • K(d);P_SPINP(c),S_FLIGHT
  • Actual
    • R(E);
    • Threat
      • S(D)
    • Vars
      • K(d);N_SPINP(c),S_FLIGHT,XS(D)::QAB1(F)
      • B(a);N_GUARD,P_SPINB(a),XP(G)::S(D)
      • B(b);P_PINP(B),SBLOCK,XS(D)::R1(H)
      • S(e);SBLOCK,XS(D)::P(B)
      • S(g);OGATEB,P_SPINS(g),XP(G)::B(I)
      • P(h);::S(D),XP(h)
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