MESON Chess Problem Database

Problem Display
PID: 107447 (8/5pp1/Qrp5/1bP2R2/prkNPp2/2P2NqR/1p2Pn2/1K2B3 w - - 0 1)

Zidek, Alexander

Schach-Report, 1987

8/5pp1/Qrp5/1bP2R2/prkNPp2/2P2NqR/1p2Pn2/1K2B3

#2

11 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qh2
      • 2.Sd2#
    • 1...Qh4
      • 2.Sd2#
    • 1...Qg1
      • 2.Sd2#
    • 1...Qg2
      • 2.Sd2#
    • 1...Qg4
      • 2.Sd2#
    • 1...Qg5
      • 2.Sd2#
    • 1...Qg6
      • 2.Sd2#
  • Tries
    • 1.Qb7?
      • threat
        • 2.Qxf7#
      • 1...Qg6
        • 2.Sd2#
      • 1...f6
        • 2.Qf7#
      • 1...Rxb7!
    • 1.Qa5?
      • threat
        • 2.Qxb4#
      • 1...Rb3
        • 2.Sd2#
      • 1...Ba6
        • 2.Se5#
      • 1...Sd3!
  • Keys
    • 1.Qa7!
      • threat
        • 2.Qxf7#
      • 1...Qg6
        • 2.Sd2#
      • 1...Rb7
        • 2.Se5#
      • 1...f6
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • Q(c);::S(E)
    • Q(c);P_PINB(B)::S(E)
  • Tries
    • Try
      • Q(K);N_PINB(h)
      • Threat
        • QAB(K),XP(k)
      • Vars
        • Q(c);::S(E)
        • P(k);::QAB(K)
      • Refutation
        • R(i);XQ(K)
    • Try
      • Q(K);N_PINB(h)
      • Threat
        • QAR1(K),XR(e)
      • Vars
        • R(e);::S(E)
        • B(h);::S(E)
      • Refutation
        • S(b);
  • Actual
    • Q(K);N_PINB(h)
    • Threat
      • QAB(K),XP(k)
    • Vars
      • Q(c);::S(E)
      • R(i);::S(E)
      • P(k);::QAB(K)
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