MESON Chess Problem Database

Problem Display
PID: 252792 (1Bn4b/3bRN2/2p1qp2/1pP3R1/4k1P1/1Q6/KnN5/8 w - - 0 1)

Labai, Zoltan

SEPA-80 JT (Problemas), 2013-2014

1Bn4b/3bRN2/2p1qp2/1pP3R1/4k1P1/1Q6/KnN5/8

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe7
      • 2.Qe3#
    • 1...Be8
      • 2.Rxe6#
    • 1...fxg5
      • 2.Sxg5#
  • Tries
    • 1.Rf5?
      • threat
        • 2.Rf4#
      • 1...Qe5
        • 2.Qf3#
      • 1...Sc4
        • 2.Qf3#
      • 1...Sd6
        • 2.Sxd6#
      • 1...Sd3!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Rd4#
      • 1...cxd5
        • 2.Qe3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...f5
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(e);N_PINQ(C),N_SPINQ(e),XR(G)::QAR1(C)
    • B(g);N_GUARD::R(G),XQ(e)
    • P(f);XR(F)::S(H),XP(f)
  • Tries
    • Try
      • R(F);
      • Threat
        • R1(F)
      • Vars
        • Q(e);N_PINQ(C)::QAB1(C)
        • S(a);N_PINQ(C)::QAB1(C)
        • S(h);N_GUARD::S(H),XS(h)
      • Refutation
        • S(a);
  • Actual
    • R(F);N_SPINQ(C)
    • Threat
      • R1(F)
    • Vars
      • P(d);SBLOCK,XR(F)::QAR1(C)
      • S(a);N_GUARD::QAB1(C),XS(a)
      • P(f);N_GUARD::S(H)
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