MESON Chess Problem Database

Problem Display
PID: 207502 (7Q/4p3/2K1P1P1/3N1k2/5N1P/8/2P3P1/8 w - - 0 1)

Pilnacek, Jan V

Svetozor, 1872

7Q/4p3/2K1P1P1/3N1k2/5N1P/8/2P3P1/8

#2

9 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sd3?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kxe6
        • 2.Qe5#
        • 2.Qc8#
      • 1...Kxg6
        • 2.Sxe7#
      • 1...Kg4!
    • 1.Qc3?
      • 1...Kg4
        • 2.Qh3#
      • 1...Ke4!
    • 1.Qe5+?
      • 1...Kg4
        • 2.Qg5#
      • 1...Kxe5!
  • Keys
    • 1.Se2!
      • 1...Ke4
        • 2.Sg3#
      • 1...Kg4
        • 2.Se3#
      • 1...Kxe6
        • 2.Sd4#
      • 1...Kxg6
        • 2.Sxe7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(I)
        • K(a);S_FLIGHT,XP(H)::S(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(I);
      • Vars
        • K(a);S_FLIGHT::QAB1(I)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(I);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(I)
      • Refutation
        • K(a);P-FLIGHT,XQ(I)
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT::S(C)
      • K(a);S_FLIGHT::S(E)
      • K(a);S_FLIGHT,XP(G)::S(C)
      • K(a);S_FLIGHT,XP(H)::S(E),XP(b)
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