MESON Chess Problem Database

Problem Display
PID: 231268 (5N2/6K1/3pP3/4kp1Q/7P/2P2P2/5PP1/8 w - - 0 1)

Loveiko, Franz Kazimirovic

4th HM., Zadachi i Etyudi, 1927

5N2/6K1/3pP3/4kp1Q/7P/2P2P2/5PP1/8

#2

9 + 3

5454 Near Snap 2021
6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Sg6#
  • Tries
    • 1.Sd7+?
      • 1...Kf4
        • 2.Qg5#
        • 2.Qh6#
        • 2.g3#
      • 1...Kxe6
        • 2.Qf7#
      • 1...Kd5!
    • 1.Qf7?
      • 1...Kf4
        • 2.Sg6#
      • 1...d5
        • 2.Qc7#
      • 1...f4
        • 2.Qh5#
      • 1...Kd5!
  • Keys
    • 1.Qe8!
      • 1...Kf4
        • 2.Sg6#
      • 1...Kd5
        • 2.Qb5#
      • 1...d5
        • 2.Qb8#
      • 1...f4
        • 2.Qh5#

Anticipated by 4579(1880), 194020(1917)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINP(b),S_FLIGHT::S(I)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT,XP(G)::QAB1(F)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(F);N_PINP(b)
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::S(I)
        • P(c);OGATEB,SBLOCK::QAB(F)
        • P(b);OGATEB,SBLOCK::QAR(F)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(F);N_PINP(b)
    • Vars
      • K(a);S_FLIGHT::S(I)
      • K(a);P-FLIGHT::QAR2(F)
      • P(c);OGATEB,SBLOCK::QAB(F)
      • P(b);OGATEB,SBLOCK::QAR(F)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).