MESON Chess Problem Database

Problem Display
PID: 15871 (1b6/1K4R1/p2p1nB1/Qn1kp1R1/3p2p1/1P1N4/8/8 w - - 0 1)

Zidek, Alexander

4th Prize, Schach-Aktiv, 1988

1b6/1K4R1/p2p1nB1/Qn1kp1R1/3p2p1/1P1N4/8/8

#2

7 + 9

14730 Problempalette II (Chlubna/Wenda) 1991

SOLUTION

  • SOUND
  • Sets
    • 1...Se4
      • 2.Bf7#
  • Tries
    • 1.Sb4+?
      • 1...Ke6
        • 2.Bf5#
      • 1...Kc5!
    • 1.Qe1?
      • threat
        • 2.Bf7#
      • 1...Ke6
        • 2.Sf4#
      • 1...Sc7!
    • 1.Qb4?
      • threat
        • 2.Sf4#
        • 2.Qc4#
      • 1...Sa3
        • 2.Sf4#
      • 1...Sh5
        • 2.Qc4#
      • 1...Ke6!
    • 1.Qb6?
      • threat
        • 2.Sf4#
      • 1...Ke6
        • 2.Rxe5#
      • 1...Sh5!
    • 1.Qxb5+?
      • 1...Ke6
        • 2.Bf5#
      • 1...axb5!
  • Keys
    • 1.Qd8!
      • threat
        • 2.Rxe5#
      • 1...Ke6
        • 2.Bf7#
      • 1...Sd7
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(h);SBLOCK::B(E)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(d);N_SPINP(e),N_SPINS(c),S_FLIGHT::B(E)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(C);N_PINS(c)
      • Threat
        • B(E)
      • Vars
        • K(d);S_FLIGHT::S(B)
      • Refutation
        • S(c);
    • Try
      • Q(C);N_PINS(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::S(B)
        • S(h);::QAB1(C)
      • Refutation
        • K(d);N_SPINP(e),S_FLIGHT
    • Try
      • Q(C);N_PINS(c)
      • Threat
        • S(B)
      • Vars
        • K(d);N_SPINP(e),P_SPINP(g),S_FLIGHT::R1(D),XP(e)
      • Refutation
        • S(h);
    • Try
      • Q(C);CHECK,XS(c)
      • Vars
        • K(d);N_SPINP(e),S_FLIGHT::B(E)
      • Refutation
        • P(f);XQ(C)
  • Actual
    • Q(C);N_PINS(c)
    • Threat
      • R1(D),XP(e)
    • Vars
      • K(d);N_SPINP(e),S_FLIGHT::B(E)
      • S(h);N_GUARD::QAB(C)
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