MESON Chess Problem Database

Problem Display
PID: 261206 (8/3K4/2RNQ3/2N1PP2/3k4/4r3/3Bb3/8 w - - 0 1)

Bolleter, Stefan

List, Reto

Neue Zurcher Zeitung, 1979

8/3K4/2RNQ3/2N1PP2/3k4/4r3/3Bb3/8

#2

8 + 3

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Sb5#
    • 1...Bd1
      • 2.Sb5#
    • 1...Bd3
      • 2.Sb3#
    • 1...Bf3
      • 2.Sb5#
    • 1...Bg4
      • 2.Sb5#
    • 1...Bb5
      • 2.Sxb5#
    • 1...Bh5
      • 2.Sb5#
  • Tries
    • 1.Sb3+?
      • 1...Kd3
        • 2.Rc3#
        • 2.Qc4#
        • 2.Qd5#
      • 1...Rxb3!
    • 1.Bxe3+?
      • 1...Kc3
        • 2.Qb3#
      • 1...Kxe3!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qc4#
      • 1...Kxd3
        • 2.Qd5#
      • 1...Rxd3
        • 2.Rc4#
      • 1...Bxd3
        • 2.Bc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • R(b);S_CUTB(a)::S(F)
    • B(a);N_GUARD::S(F)
    • B(a);SBLOCK,S_CUTR(b)::S(B)
    • B(a);N_GUARD,P_PINR(E)::S(F),XB(a)
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • R(b);XS(B)
    • Try
      • B(A);CHECK,XR(b)
      • Vars
        • K(c);N_GUARD,S_FLIGHT::QAR1(G)
      • Refutation
        • K(c);S_FLIGHT,XB(A)
  • Actual
    • S(B);
    • Threat
      • QAR1(G)
    • Vars
      • K(c);N_GUARD,P-FLIGHT,XS(B)::QAR2(G)
      • R(b);SBLOCK,XS(B)::R1(E)
      • B(a);SBLOCK,XS(B)::B(A)
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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).