MESON Chess Problem Database

Problem Display
PID: 227716 (3N4/6p1/8/3kP3/6N1/1P1nQ3/1n1R1p2/5K2 w - - 0 1)

Csillag, Antal

Uj Nemezdek, 1926

3N4/6p1/8/3kP3/6N1/1P1nQ3/1n1R1p2/5K2

#2

7 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Rxd3#
    • 1...Sa4
      • 2.Rxd3#
    • 1...Sc4
      • 2.Rxd3#
    • 1...g5
      • 2.Sf6#
    • 1...g6
      • 2.Sf6#
  • Tries
    • 1.Rd1?
      • 1...g5
        • 2.Sf6#
      • 1...Sa4
        • 2.Rxd3#
      • 1...Sc4
        • 2.Rxd3#
      • 1...g6
        • 2.Sf6#
      • 1...Sxd1!
    • 1.e6?
      • threat
        • 2.Qe5#
      • 1...Sc4
        • 2.Rxd3#
      • 1...Kd6!
  • Keys
    • 1.Rc2!
      • 1...Sxe5
        • 2.Qxe5#
      • 1...g5
        • 2.Sf6#
      • 1...Sd1
        • 2.Qxd3#
      • 1...Sa4
        • 2.Qxd3#
      • 1...Sc4
        • 2.bxc4#
      • 1...Sc1
        • 2.Rc5#
      • 1...Se1
        • 2.Rc5#
      • 1...Sb4
        • 2.Rc5#
      • 1...Sf4
        • 2.Rc5#
      • 1...Sc5
        • 2.Rxc5#
      • 1...g6
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::R(B),XS(c)
    • P(e);N_GUARD::S(E)
  • Tries
    • Try
      • R(B);
      • Vars
        • P(e);N_GUARD::S(E)
        • S(a);N_GUARD::R(B),XS(c)
      • Refutation
        • S(a);N_SPINS(c),XR(B)
    • Try
      • P(F);
      • Threat
        • QAR1(D)
      • Vars
        • S(a);N_GUARD::R(B),XS(c)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • R(B);N_PINS(c)
    • Vars
      • S(c);OGATE,XP(F)::QAR1(D),XS(c)
      • P(e);N_GUARD::S(E)
      • S(a);N_GUARD::QAR2(D),XS(c)
      • S(a);OGATE::P(C),XS(a)
      • S(c);N_GUARD::R1(B)
      • S(c);N_GUARD::R1(B),XS(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).