MESON Chess Problem Database

Problem Display
PID: 108632 (1QBBn3/3R4/5PPp/rnR1N2P/pK3krp/2P3N1/4Pp1P/8 w - - 0 1)

Kiss, Janos

UJCS, 1951

1QBBn3/3R4/5PPp/rnR1N2P/pK3krp/2P3N1/4Pp1P/8

#2

14 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3+
      • 2.Sxg4#
    • 1...Kg5+
      • 2.Sc4#
  • Tries
    • 1.Sc4+?
      • 1...Sbc7
        • 2.Rd4#
      • 1...Sed6
        • 2.Rf5#
      • 1...Sec7
        • 2.Rf5#
      • 1...Sbd6!
    • 1.Rc4+?
      • 1...Ke3
        • 2.Sxg4#
        • 2.Rd3#
      • 1...Kg5
        • 2.Sf3#
        • 2.Sf7#
        • 2.Rxg4#
      • 1...Sd4!
    • 1.Rd4+?
      • 1...Ke3
        • 2.Sc4#
        • 2.Sxg4#
      • 1...Kg5
        • 2.Sd3#
        • 2.Sf3#
        • 2.Sc4#
        • 2.Sxg4#
        • 2.Sc6#
        • 2.Sd7#
        • 2.Sf7#
        • 2.Rxg4#
      • 1...Sxd4!
    • 1.e3+?
      • 1...Kg5+
        • 2.Sc4#
      • 1...Kxe3+!
  • Keys
    • 1.Re7!
      • threat
        • 2.Sd3#
      • 1...Ke3+
        • 2.Sc4#
      • 1...Kg5+
        • 2.Sxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(c);CHECK,S_FLIGHT::S(G),XR(d)
    • K(c);CHECK,S_FLIGHT::R(F)+S(G)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • S(g);P_SPINS(g)::R(K)
        • S(i);P_SPINS(i)::R1(F)
      • Refutation
        • S(g);P_SPINS(g)
    • Try
      • R(F);CHECK
      • Refutation
        • S(g);P_SPINS(g)
    • Try
      • R(K);CHECK
      • Refutation
        • S(g);XR(K)
    • Try
      • P(A);CHECK
      • Vars
        • K(c);CHECK,S_FLIGHT::R(F)+S(G)
      • Refutation
        • K(c);CHECK,S_FLIGHT,XP(A)
  • Actual
    • R(K);
    • Threat
      • QAB(L)+S(G),DCHECK
    • Vars
      • K(c);CHECK,S_FLIGHT::R(K)+S(G),DCHECK
      • K(c);CHECK,S_FLIGHT::R(F)+S(G),XR(d)
HTML5 logo

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).