MESON Chess Problem Database

Problem Display
PID: 233207 (5K2/pB2N3/r2pQ2R/2P2p2/1B1k1rn1/6bR/4p3/4N3 w - - 0 1)

Lindner, Erich

Freie Presse, 1979

5K2/pB2N3/r2pQ2R/2P2p2/1B1k1rn1/6bR/4p3/4N3

#2

9 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Sxf5#
    • 1...Ra1
      • 2.Sc6#
    • 1...Ra2
      • 2.Sc6#
    • 1...Ra3
      • 2.Sc6#
    • 1...Ra4
      • 2.Sc6#
    • 1...Ra5
      • 2.Sc6#
    • 1...Rc6
      • 2.Sxc6#
    • 1...Bxe1
      • 2.Qd5#
    • 1...Bf2
      • 2.Sc2#
      • 2.Rd3#
      • 2.Qd5#
    • 1...Bh2
      • 2.Sc2#
      • 2.Rd3#
      • 2.Qd5#
    • 1...Bh4
      • 2.Sc2#
      • 2.Rd3#
      • 2.Qd5#
  • Tries
    • 1.Sf3+?
      • 1...Kd3
        • 2.Qb3#
      • 1...Rxf3!
    • 1.Bxa6?
      • threat
        • 2.Sc2#
        • 2.Sc6#
      • 1...Bxe1
        • 2.Sc6#
        • 2.Rd3#
        • 2.Qd5#
      • 1...Re4
        • 2.Sc2#
        • 2.Sxf5#
      • 1...Se3
        • 2.Sc6#
      • 1...Se5!
  • Keys
    • 1.Sc2+!
      • 1...Kd3
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • R(d);N_GUARD::S(H),XP(f)
    • R(g);N_GUARD::S(H)
    • R(g);N_GUARD::S(H),XR(g)
    • B(b);XS(A)::QAR1(E)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR2(E)
      • Refutation
        • R(d);XS(A)
    • Try
      • B(G);XR(g)
      • Threat
        • DUALS(2)
      • Vars
        • S(e);::S(H)
      • Refutation
        • S(e);
  • Actual
    • S(A);CHECK
    • Vars
      • K(c);P-FLIGHT,P_SPINB(b)::QAR2(E)
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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).