MESON Chess Problem Database

Problem Display
PID: 201734 (n2rN3/8/pp2RQ2/Rq1k2r1/1P1p2p1/1P6/4Pp2/1b3K2 w - - 0 1)

Kovacs, Florian Janos

Takats, Sandor

Uj Nemezdek, 1922

n2rN3/8/pp2RQ2/Rq1k2r1/1P1p2p1/1P6/4Pp2/1b3K2

#2

8 + 11

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Rxe5#
      • 2.Qxe5#
    • 1...Rg6
      • 2.Re5#
      • 2.Qe5#
    • 1...Rg7
      • 2.Re5#
      • 2.Qe5#
    • 1...Rg8
      • 2.Re5#
      • 2.Qe5#
    • 1...Bf5
      • 2.Re5#
      • 2.Qe5#
    • 1...Sc7
      • 2.Sxc7#
    • 1...d3
      • 2.e4#
  • Tries
    • 1.Qxg5+?
      • 1...Bf5
        • 2.Qxf5#
      • 1...Kxe6!
  • Keys
    • 1.Re7!
      • threat
        • 2.Qe6#
      • 1...Re5
        • 2.Rxe5#
      • 1...Rd6
        • 2.Qxd6#
      • 1...Rg6
        • 2.Re5#
      • 1...Bf5
        • 2.Re5#
      • 1...Sc7
        • 2.Sxc7#
      • 1...d3
        • 2.e4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(j);N_GUARD::S(H),XS(j)
    • P(c);N_PINP(B)::P(B)
  • Tries
    • Try
      • Q(G);CHECK,XR(g)
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR2(G),XB(a)
      • Refutation
        • K(f);N_SPINQ(e),S_FLIGHT,XR(F)
  • Actual
    • R(F);
    • Threat
      • QAB1(G)
    • Vars
      • R(g);N_GUARD::R1(F),XR(g)
      • R(k);N_GUARD::QAR1(G),XR(k)
      • R(g);N_GUARD::R1(F)
      • B(a);S_CUTR(g)::R1(F)
      • S(j);N_GUARD::S(H),XS(j)
      • P(c);N_PINP(B)::P(B)
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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).