MESON Chess Problem Database

Problem Display
PID: 271185 (b3r2q/6n1/2kN2R1/2N4Q/4R3/2B5/8/K6B w - - 0 1)

Haag, Joseph

Schackvarlden, 1938

b3r2q/6n1/2kN2R1/2N4Q/4R3/2B5/8/K6B

#2

8 + 5

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Rxe8+?
      • 1...Kc7
        • 2.Sb5#
        • 2.Ba5#
      • 1...Kb6!
  • Keys
    • 1.Sxe8+!
      • 1...Kb5
        • 2.Sc7#
      • 1...Se6
        • 2.Rb4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);CHECK,XR(d)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(G);CHECK,XR(d)
    • Vars
      • K(a);N_GUARD,S_CUTS(b),S_FLIGHT::S(G)
      • S(b);P_PINB(C),P_SPINS(b)::B(B)+R(D)
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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).