MESON Chess Problem Database

Problem Display
PID: 229252 (8/8/8/2Kp1Np1/R1n2kB1/2Q1NP2/3r3P/3r2b1 w - - 0 1)

Regos, Imre

Magyar Sakkvilag, 1926

8/8/8/2Kp1Np1/R1n2kB1/2Q1NP2/3r3P/3r2b1

#2

8 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe3+
      • 2.Qxe3#
  • Tries
    • 1.Qg7?
      • threat
        • 2.Qc7#
      • 1...Rd4
        • 2.Sg2#
      • 1...d4
        • 2.Sd5#
      • 1...Bxe3+!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qd6#
      • 1...Bxe3+
        • 2.Sd4#
      • 1...Rd4
        • 2.Sg2#
      • 1...d4
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(b);CHECK,OGATE,XS(C)::QAB1(B),XB(b)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB(B)
      • Vars
        • R(c);N_PINS(C),N_SPINS(d)::S(C)
        • P(f);N_PINS(C),N_SPINS(d)::S(C)
      • Refutation
        • B(b);CHECK,XS(C)
  • Actual
    • Q(B);
    • Threat
      • QAB(B)
    • Vars
      • B(b);CHECK,SBLOCK,XS(C)::QAR(B)+S(H)
      • R(c);N_PINS(C),N_SPINS(d)::S(C)
      • P(f);N_PINS(C),N_SPINS(d)::S(C)
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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).