MESON Chess Problem Database

Problem Display
PID: 118300 (8/8/4p3/2P5/1P1kpQ2/2p1N1K1/2P5/8 w - - 0 1)

Pradignat, Emile Leonard

La Presse, 1896

8/8/4p3/2P5/1P1kpQ2/2p1N1K1/2P5/8

#2

6 + 4

6490 yacpdb 2009
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qh6?
      • 1...Ke5
        • 2.Qg7#
        • 2.Qh8#
      • 1...e5!
    • 1.Qf6+?
      • 1...Kxe3
        • 2.Qf2#
      • 1...e5!
    • 1.Qf8?
      • 1...Kxe3
        • 2.Qf2#
      • 1...Ke5
        • 2.Qg7#
        • 2.Qh8#
      • 1...e5!
  • Keys
    • 1.Qf7!
      • 1...Kxe3
        • 2.Qf2#
      • 1...Ke5
        • 2.Qg7#
      • 1...e5
        • 2.Sf5#

This anticipates 187817(1909), 203643(1924)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);N_PINP(c)
      • Refutation
        • P(d);
    • Try
      • Q(E);CHECK,N_PINP(c)
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(B)::QAB1(E)
      • Refutation
        • P(d);P_SPINP(d)
    • Try
      • Q(E);N_PINP(c)
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(B)::QAB1(E)
      • Refutation
        • P(d);
  • Actual
    • Q(E);N_PINP(c)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(B)::QAB1(E)
      • K(b);S_FLIGHT::QAB(E)
      • P(d);N_GUARD,SBLOCK::S(B)
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