MESON Chess Problem Database

Problem Display
PID: 176485 (4rQ2/2p2q1b/1pN3B1/1Kpn1r2/1pP1kp2/2pNp3/2P2bP1/8 w - - 0 1)

Riczu, Lajos

Schach-Echo, 1983

4rQ2/2p2q1b/1pN3B1/1Kpn1r2/1pP1kp2/2pNp3/2P2bP1/8

#2

8 + 14

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qg8
      • 2.Qxf5#
    • 1...Qe7
      • 2.Qxf5#
    • 1...Qg7
      • 2.Qxf5#
  • Keys
    • 1.Qxc5!
      • threat
        • 2.Qd4#
      • 1...bxc5
        • 2.Sxc5#
      • 1...Qf6
        • 2.Qxd5#
      • 1...Qg7
        • 2.Qxd5#
      • 1...Sf6
        • 2.Qxf5#
      • 1...Se7
        • 2.Qe5#
      • 1...e2
        • 2.Sxf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • Q(l);OGATE::QAB1(H),XR(i)
  • Actual
    • Q(H);XP(g)
    • Threat
      • QAR1(H)
    • Vars
      • P(j);XQ(H)::S(C),XP(j)
      • Q(l);N_GUARD::QAB1(H),XS(h)
      • S(h);OGATE,P_PINQ(H)::QAB1(H),XR(i)
      • S(h);OGATE,P_PINQ(H)::QAR1(H)
      • P(c);N_GUARD::S(C),XB(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).