MESON Chess Problem Database

Problem Display
PID: 64596 (8/2B5/pP1RP3/Rn1PP3/P2kN1P1/P2B4/2P3NQ/2K5 w - - 0 1)

Lehen, Ludovit

1st Prize, Szachy, 1982

8/2B5/pP1RP3/Rn1PP3/P2kN1P1/P2B4/2P3NQ/2K5

#2

16 + 3

3752 FIDE Album (1980-1982) 1988
17121 Encyclopedia of Chess Problems (Velimirovic/Valtonen) 2012

SOLUTION

  • SOUND
  • Tries
    • 1.Kd2?
      • 1...Sxa3
        • 2.c3#
      • 1...Sxd6
        • 2.c3#
      • 1...Sxc7
        • 2.c3#
      • 1...Sa7
        • 2.c3#
      • 1...Sc3!
    • 1.Se3?
      • threat
        • 2.Sf5#
      • 1...Kxe3
        • 2.Qf2#
      • 1...Sxd6!
    • 1.Sh4?
      • threat
        • 2.Sf5#
      • 1...Ke3
        • 2.Qf2#
      • 1...Sxd6!
    • 1.Bxb5?
      • 1...Kxe4
        • 2.Qf4#
      • 1...axb5!
    • 1.Rc6?
      • 1...Kxd5
        • 2.Rd6#
      • 1...Sxa3
        • 2.Qg1#
      • 1...Sxc7
        • 2.Rc4#
      • 1...Sc3
        • 2.Rc4#
        • 2.Qg1#
      • 1...Sa7
        • 2.Rc4#
        • 2.Qg1#
      • 1...Sd6!
    • 1.Qg3?
      • 1...Sxa3
        • 2.c3#
      • 1...Sxd6
        • 2.c3#
      • 1...Sxc7
        • 2.c3#
      • 1...Sa7
        • 2.c3#
      • 1...Sc3!
  • Keys
    • 1.Sg3!
      • 1...Kc3
        • 2.Se2#
      • 1...Kc5
        • 2.Qg1#
      • 1...Kxe5
        • 2.Qh8#
      • 1...Sxa3
        • 2.Se2#
      • 1...Sxd6
        • 2.Se2#
      • 1...Sxc7
        • 2.Se2#
      • 1...Sc3
        • 2.Sf5#
      • 1...Sa7
        • 2.Se2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • S(b);N_GUARD,XP(E)::P(B)
        • S(b);N_GUARD,XR(N)::P(B)
        • S(b);N_GUARD,XB(P)::P(B)
        • S(b);N_GUARD::P(B)
      • Refutation
        • S(b);
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(D)
      • Refutation
        • S(b);XR(N)
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
      • Refutation
        • S(b);XR(N)
    • Try
      • B(F);XS(b)
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(H)::QAR1(D)
      • Refutation
        • P(c);XB(F)
    • Try
      • R(N);
      • Vars
        • K(a);OGATEB,P-FLIGHT,P_SPINS(b),XP(K)::R1(N)
        • S(b);XP(E)::QAB(D)
        • S(b);XB(P)::R1(N)
      • Refutation
        • S(b);
    • Try
      • Q(D);
      • Vars
        • S(b);N_GUARD,XP(E)::P(B)
        • S(b);N_GUARD,XR(N)::P(B)
        • S(b);N_GUARD,XB(P)::P(B)
        • S(b);N_GUARD::P(B)
      • Refutation
        • S(b);
  • Actual
    • S(H);
    • Vars
      • K(a);S_FLIGHT::S(H)
      • K(a);P_SPINS(b),S_FLIGHT::QAB(D)
      • K(a);OGATEB,S_FLIGHT,XP(L)::QAB(D)
      • S(b);XP(E)::S(H)
      • S(b);XR(N)::S(H)
      • S(b);XB(P)::S(H)
      • S(b);SBLOCK::S(H)
      • S(b);::S(H)
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