MESON Chess Problem Database

Problem Display
PID: 95007 (2B5/p7/Rr6/1nQ2P2/1nP1k1pN/3pp1K1/N3P3/8 w - - 0 1)

Labai, Zoltan

Pravda, 1976

2B5/p7/Rr6/1nQ2P2/1nP1k1pN/3pp1K1/N3P3/8

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re6
      • 2.Rxe6#
    • 1...Rb7
      • 2.Re6#
    • 1...Rb8
      • 2.Re6#
    • 1...Sxa2
      • 2.Qd5#
    • 1...Sc2
      • 2.Qd5#
    • 1...Sd5
      • 2.Qxd5#
    • 1...Sxa6
      • 2.Qd5#
    • 1...Sc6
      • 2.Qd5#
    • 1...Sa3
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Sd4
      • 2.Sc3#
    • 1...Sd6
      • 2.Sc3#
    • 1...Sc7
      • 2.Sc3#
  • Tries
    • 1.Sxb4?
      • threat
        • 2.Qd5#
        • 2.exd3#
      • 1...dxe2
        • 2.Qd5#
      • 1...Sc3
        • 2.exd3#
      • 1...Sc7
        • 2.exd3#
      • 1...d2
        • 2.Qd5#
      • 1...Rd6!
    • 1.Sf3?
      • threat
        • 2.Sg5#
        • 2.Qe5#
      • 1...gxf3
        • 2.exf3#
      • 1...Re6
        • 2.Sg5#
        • 2.Rxe6#
      • 1...Rg6
        • 2.Qe5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sc6
        • 2.Sg5#
        • 2.Qd5#
      • 1...dxe2!
    • 1.Bb7+?
      • 1...Rxb7
        • 2.Re6#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sc6
        • 2.Qd5#
      • 1...Rc6!
    • 1.exd3+?
      • 1...Sxd3
        • 2.Qd5#
      • 1...Kxd3!
    • 1.f6?
      • threat
        • 2.Bf5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Re6
        • 2.Rxe6#
      • 1...Sd4
        • 2.Sc3#
      • 1...Sd6
        • 2.Sc3#
      • 1...Rxf6!
  • Keys
    • 1.Sg2!
      • threat
        • 2.Qxe3#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Re6
        • 2.Rxe6#
      • 1...Sc2
        • 2.Qd5#
      • 1...Sd4
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 9
  • Sets
    • R(g);OGATE::R(H),XR(g)
    • R(g);OGATE::R(H)
    • S(c);N_GUARD,XS(A)::QAB1(F)
    • S(c);N_GUARD::QAB1(F)
    • S(c);N_GUARD::QAB1(F),XS(c)
    • S(c);N_GUARD,XR(H)::QAB1(F)
    • S(f);N_GUARD::S(A)
    • S(f);N_GUARD::S(A),XS(f)
  • Tries
    • Try
      • S(A);XS(c)
      • Threat
        • DUALS(2)
      • Vars
        • P(a);XP(B)::QAB1(F)
        • S(f);::P(B),XP(a)
        • P(a);::QAB1(F)
      • Refutation
        • R(g);
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);OGATE,XS(E)::P(B),XP(e)
        • R(g);::QAR1(F)
        • S(c);N_GUARD::QAB1(F),XS(c)
      • Refutation
        • P(a);XP(B)
    • Try
      • B(I);CHECK
      • Vars
        • R(g);OGATE,XB(I)::R(H)
        • S(c);N_GUARD,P_SPINS(c)::QAB1(F),XS(c)
        • S(c);N_GUARD,P_SPINS(c)::QAB1(F)
      • Refutation
        • R(g);P_SPINR(g)
    • Try
      • P(B);CHECK,XP(a)
      • Vars
        • S(c);XP(B)::QAB1(F)
      • Refutation
        • K(d);S_FLIGHT,XP(B)
    • Try
      • P(G);
      • Threat
        • B(I)
      • Vars
        • S(c);N_GUARD::QAB1(F),XS(c)
        • R(g);OGATE::R(H),XR(g)
        • S(f);N_GUARD::S(A)
      • Refutation
        • R(g);XP(G)
  • Actual
    • S(E);
    • Threat
      • QAR1(F),XP(b)
    • Vars
      • S(c);N_GUARD::QAB1(F),XS(c)
      • R(g);OGATE::R(H),XR(g)
      • S(c);N_GUARD::QAB1(F)
      • S(f);N_GUARD::S(A)
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