MESON Chess Problem Database

Problem Display
PID: 157467 (3k4/2pP3n/8/2BR2n1/b7/6Q1/8/7K w - - 0 1)

Hladik, Frantisek

Source?, 1950

3k4/2pP3n/8/2BR2n1/b7/6Q1/8/7K

#2

5 + 5

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Sf8
      • 2.Qxg5#
    • 1...c6
      • 2.Qb8#
  • Tries
    • 1.Qd6?
      • threat
        • 2.Qe7#
      • 1...Bxd7
        • 2.Qxd7#
      • 1...c6
        • 2.Bb6#
        • 2.Qb8#
      • 1...cxd6!
    • 1.Qxg5+?
      • 1...Sf6
        • 2.Qxf6#
      • 1...Sxg5!
  • Keys
    • 1.Qa3!
      • threat
        • 2.Be7#
      • 1...Bxd7
        • 2.Qa8#
      • 1...c6
        • 2.Bb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(d);N_GUARD::QAB(B),XS(b)
    • P(c);OGATE::QAR2(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • B(a);OGATE,P_SPINB(a),XP(E)::QAR1(B),XB(a)
      • Refutation
        • P(c);XQ(B)
    • Try
      • Q(B);CHECK,XS(b)
      • Vars
        • S(d);N_GUARD,P_SPINS(d)::QAB(B),XS(d)
      • Refutation
        • S(d);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • B(C)
    • Vars
      • B(a);OGATE,P_SPINB(a),XP(E)::QAR(B)
      • P(c);OGATEB::B(C)
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