MESON Chess Problem Database

Problem Display
PID: 229286 (8/1NKp4/1N6/1pRB4/1k6/1n1p4/1Qbr4/8 w - - 0 1)

Regos, Imre

Uj Nemezdek, 1926

8/1NKp4/1N6/1pRB4/1k6/1n1p4/1Qbr4/8

#2

6 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qxb3#
  • Tries
    • 1.Bxb3?
      • threat
        • 2.Sd5#
        • 2.Bxc2#
      • 1...Bb1
        • 2.Sd5#
        • 2.Bc2#
      • 1...Bd1
        • 2.Sd5#
        • 2.Bc2#
      • 1...d5
        • 2.Sxd5#
        • 2.Bxc2#
      • 1...Bxb3!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Rxb5#
      • 1...Ka5
        • 2.Qa3#
      • 1...Kxc5
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAR1(A),XS(c)
  • Tries
    • Try
      • B(C);XS(c)
      • Threat
        • DUALS(2)
      • Refutation
        • B(a);P_SPINB(a),XB(C)
  • Actual
    • S(E);
    • Threat
      • R1(B),XP(f)
    • Vars
      • K(e);N_SPINS(c),P_SPINP(f),S_FLIGHT::QAR2(A)
      • K(e);N_SPINS(c),S_FLIGHT,XR(B)::QAR2(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).