MESON Chess Problem Database

Problem Display
PID: 223665 (2R3N1/1K4pk/5P2/7p/7P/1B6/8/Q7 w - - 0 1)

Chocolous, Jiri

Oesterreichische Lesehalle, 1887

2R3N1/1K4pk/5P2/7p/7P/1B6/8/Q7

#2

7 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kg6
      • 2.Qb1#
  • Tries
    • 1.Bc2+?
      • 1...Kh8
        • 2.Sh6#
        • 2.Se7#
        • 2.fxg7#
      • 1...g6!
    • 1.Rc7?
      • 1...Kg6
        • 2.Bc2#
        • 2.Qb1#
      • 1...Kh8!
    • 1.Qb1+?
      • 1...Kh8
        • 2.Sh6#
        • 2.Se7#
      • 1...g6!
  • Keys
    • 1.f7!
      • 1...Kg6
        • 2.Qb1#
      • 1...Kh8
        • 2.Sf6#
      • 1...g5
        • 2.Bc2#
        • 2.f8S#
      • 1...g6
        • 2.f8S#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAB(A)
  • Tries
    • Try
      • B(B);CHECK
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • R(F);P_PINP(b)
      • Refutation
        • K(c);N_SPINP(b),P-FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • P(b);P_SPINP(b)
  • Actual
    • P(D);
    • Vars
      • K(c);S_FLIGHT::QAB(A)
      • K(c);P-FLIGHT,P_SPINP(b)::R(F)+S(G)
      • P(b);::P=S
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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).