MESON Chess Problem Database

Problem Display
PID: 42659 (2R2b2/7r/1Q1p1B1p/P3R3/2Bp4/2kP2rb/8/n1Kn4 w - - 0 1)

Lobusov, Andrey Jakovlevic

5th Prize, Probleemblad, 1978

2R2b2/7r/1Q1p1B1p/P3R3/2Bp4/2kP2rb/8/n1Kn4

#2

8 + 10

3750 FIDE Album (1977-1979) 1984

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Qb3#
    • 1...Sb3+
      • 2.Qxb3#
    • 1...Sb2
      • 2.Qxb2#
    • 1...Sf2
      • 2.Qb2#
    • 1...Se3
      • 2.Qb2#
  • Tries
    • 1.Ba6+?
      • 1...Rc7
        • 2.Rxc7#
      • 1...Bxc8!
    • 1.Be6+?
      • 1...Kxd3
        • 2.Qb5#
        • 2.Qa6#
      • 1...Rc7!
    • 1.Bf7+?
      • 1...Kxd3
        • 2.Qb5#
        • 2.Qa6#
      • 1...Bxc8!
    • 1.Rf5?
      • threat
        • 2.Bxd4#
      • 1...Sb3+
        • 2.Qxb3#
      • 1...Rxd3
        • 2.Bf7#
      • 1...Bg7
        • 2.Ba6#
      • 1...Sc2
        • 2.Qb3#
      • 1...Rg4!
    • 1.Re7?
      • threat
        • 2.Bxd4#
      • 1...Sb3+
        • 2.Qxb3#
      • 1...Rxd3
        • 2.Be6#
      • 1...Rg4
        • 2.Ba6#
      • 1...Sc2
        • 2.Qb3#
      • 1...Bg7!
    • 1.Qxd4+?
      • 1...Kxd4
        • 2.Re1#
        • 2.Re2#
        • 2.Re4#
        • 2.Re6#
        • 2.Re7#
        • 2.Ree8#
      • 1...Kb4!
  • Keys
    • 1.Re3!
      • threat
        • 2.Bxd4#
      • 1...Sb3+
        • 2.Qxb3#
      • 1...Rg4
        • 2.Bf7#
      • 1...Bg7
        • 2.Be6#
      • 1...Sc2
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(a);N_GUARD::QAR1(F)
    • S(a);CHECK,N_GUARD::QAR1(F),XS(a)
    • S(b);N_GUARD::QAB1(F),XS(b)
    • S(b);N_GUARD::QAB1(F)
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • R(i);N_GUARD,P_SPINR(i)::R(H),XR(i)
      • Refutation
        • B(e);XR(H)
    • Try
      • B(C);CHECK
      • Refutation
        • R(i);P_SPINR(i)
    • Try
      • B(C);CHECK
      • Refutation
        • B(e);XR(H)
    • Try
      • R(E);P_PINP(f)
      • Threat
        • B(G),XP(f)
      • Vars
        • S(a);CHECK,N_GUARD::QAR1(F),XS(a)
        • R(d);SBLOCK,XP(B)::R(H)+B(C)
        • B(j);S_CUTR(i)::R(H)+B(C)
        • S(a);N_GUARD::QAR1(F)
      • Refutation
        • R(d);
    • Try
      • R(E);P_PINP(f)
      • Threat
        • B(G),XP(f)
      • Vars
        • S(a);CHECK,N_GUARD::QAR1(F),XS(a)
        • R(d);SBLOCK,XP(B)::R(H)+B(C)
        • R(d);S_CUTB(e)::R(H)+B(C)
        • S(a);N_GUARD::QAR1(F)
      • Refutation
        • B(j);
    • Try
      • Q(F);CHECK,XP(f)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • R(E);P_PINP(f)
    • Threat
      • B(G),XP(f)
    • Vars
      • S(a);CHECK,N_GUARD::QAR1(F),XS(a)
      • R(d);S_CUTB(e)::R(H)+B(C)
      • B(j);S_CUTR(i)::R(H)+B(C)
      • S(a);N_GUARD::QAR1(F)
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