MESON Chess Problem Database

Problem Display
PID: 10182 (B6n/1r3P1Q/2n1NR1B/r2kP1p1/2NP4/3p4/5b2/2R2K2 w - - 0 1)

Livshits, Eduard Yakovlevich

1/2 HM., Shakhmaty (Riga), 1962

B6n/1r3P1Q/2n1NR1B/r2kP1p1/2NP4/3p4/5b2/2R2K2

#2

11 + 8

3747 FIDE Album (1962-1964) 1968
5862 An ABC of Chess Problems 1970
4640 Chess Wizardry: The New ABC of Chess Problems 1996
145 StrateGems 2007
56 The Problemist 2014
133 The Problemist Supplement 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.Sxb6#
    • 1...Ra7
      • 2.Sb6#
    • 1...Rc7
      • 2.Sb6#
    • 1...Rd7
      • 2.Sb6#
    • 1...Re7
      • 2.Sb6#
    • 1...Rxf7
      • 2.Sb6#
    • 1...Be1
      • 2.Se3#
    • 1...Be3
      • 2.Sxe3#
    • 1...Bg3
      • 2.Se3#
    • 1...Bh4
      • 2.Se3#
    • 1...Sb4
      • 2.Sb6#
    • 1...Sa7
      • 2.Sb6#
    • 1...Se7
      • 2.Sb6#
    • 1...Sb8
      • 2.Sb6#
    • 1...Sd8
      • 2.Sb6#
  • Tries
    • 1.Sf4+?
      • 1...gxf4
        • 2.Rd6#
      • 1...Kxd4!
    • 1.Sc7+?
      • 1...Rxc7
        • 2.Rd6#
      • 1...Kxd4!
    • 1.Qxd3?
      • threat
        • 2.Qf3#
      • 1...Sxd4
        • 2.Bxb7#
      • 1...Sxe5
        • 2.Sc7#
      • 1...Rb3
        • 2.Sc7#
      • 1...Be3
        • 2.Sxe3#
      • 1...g4
        • 2.Sf4#
      • 1...Ra3!
    • 1.Qf5?
      • threat
        • 2.Qf3#
      • 1...Sxd4
        • 2.Sb6#
      • 1...Sxe5
        • 2.Bxb7#
      • 1...g4!
  • Keys
    • 1.Bf8!
      • threat
        • 2.Qh1#
      • 1...Sxd4
        • 2.Sc7#
      • 1...Sxe5
        • 2.Sb6#
      • 1...Bh4
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 14
  • Sets
    • R(g);N_GUARD,P_SPINS(f)::S(C),XR(g)
    • R(g);N_GUARD,P_SPINS(f)::S(C)
    • R(g);N_GUARD,P_SPINS(f),XP(I)::S(C)
    • B(a);N_GUARD::S(C)
    • B(a);N_GUARD::S(C),XB(a)
    • S(f);P_SPINR(g)::S(C)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • P(e);XS(F)::R1(G)
      • Refutation
        • K(d);P-FLIGHT,XP(D)
    • Try
      • S(F);CHECK
      • Vars
        • R(g);P_SPINS(f),XS(F)::R1(G)
      • Refutation
        • K(d);P-FLIGHT,XP(D)
    • Try
      • Q(J);XP(b)
      • Threat
        • QAB(J)
      • Vars
        • S(f);OGATEB,P_SPINR(g),P_SPINS(f),XP(D)::B(K),XR(g)
        • S(f);P_SPINR(g),XP(E)::S(F)
        • R(g);N_GUARD,P_SPINS(f)::S(F)
        • B(a);N_GUARD::S(C),XB(a)
        • P(e);N_GUARD::S(F)
      • Refutation
        • R(c);
    • Try
      • Q(J);
      • Threat
        • QAB(J)
      • Vars
        • S(f);P_SPINR(g),XP(D)::S(C)
        • S(f);OGATEB,P_SPINR(g),P_SPINS(f),XP(E)::B(K),XR(g)
      • Refutation
        • P(e);
  • Actual
    • B(H);
    • Threat
      • QAB(J)
    • Vars
      • S(f);P_SPINR(g),SBLOCK,XP(D)::S(F)
      • S(f);P_SPINR(g),XP(E)::S(C)
      • B(a);N_GUARD::S(C)
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