MESON Chess Problem Database

Problem Display
PID: 109480 (8/8/5N2/3Qpk2/5N1P/8/8/5K2 w - - 0 1)

Svoboda, Rudolf

Sachova skladba, 1986

8/8/5N2/3Qpk2/5N1P/8/8/5K2

#2

5 + 2

6490 yacpdb 2009
5454 Near Snap 2013

SOLUTION

  • SOUND
  • Tries
    • 1.Ke2?
      • 1...Kxf4
        • 2.Qf3#
      • 1...Kxf6!
    • 1.Kf2?
      • 1...Kxf4
        • 2.Qf3#
        • 2.Qe4#
      • 1...Kxf6!
    • 1.Kg2?
      • 1...Kxf4
        • 2.Qf3#
        • 2.Qe4#
      • 1...Kxf6!
  • Keys
    • 1.Qc5!
      • 1...Kxf4
        • 2.Qf2#
      • 1...Kxf6
        • 2.Qf8#

Anticipated by 23002(1881), 222665(1884), 194199(1917), 169805(1945), 2154(1964)

This anticipates 103549(2006)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(b);N_SPINP(a),OGATEB,P-FLIGHT,XS(B)::QAR1(D)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT,XS(E)
    • Try
      • K(A);P-FLIGHT
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT,XS(E)
    • Try
      • K(A);S_FLIGHT
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT,XS(E)
  • Actual
    • Q(D);
    • Vars
      • K(b);N_SPINP(a),OGATEB,P-FLIGHT,XS(B)::QAR2(D)
      • K(b);N_SPINP(a),OGATEB,P-FLIGHT,XS(E)::QAR2(D)
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