MESON Chess Problem Database

Problem Display
PID: 203493 (8/4K3/8/8/Rr1k1N2/8/3NR3/1BB5 w - - 0 1)

Regos, Imre

Nepszava, 1924

8/4K3/8/8/Rr1k1N2/8/3NR3/1BB5

#2

7 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Rxc4#
  • Tries
    • 1.Se6+?
      • 1...Kc3
        • 2.Re3#
      • 1...Kd5!
    • 1.Re4+?
      • 1...Kc3
        • 2.Se2#
        • 2.Sd5#
      • 1...Kc5!
    • 1.Rxb4+?
      • 1...Kc3
        • 2.Sd5#
        • 2.Rc4#
      • 1...Kc5!
  • Keys
    • 1.Re5!
      • threat
        • 2.Bb2#
      • 1...Kc3
        • 2.Se2#
      • 1...Kxe5
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(a);OGATE::R1(E),XR(a)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(b);N_SPINR(a),S_FLIGHT::R(D)
      • Refutation
        • K(b);N_SPINR(a),P-FLIGHT
    • Try
      • R(D);CHECK
      • Refutation
        • K(b);N_SPINR(a),S_FLIGHT
    • Try
      • R(E);CHECK,XR(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(D);
    • Threat
      • B(B)
    • Vars
      • K(b);N_SPINR(a),S_FLIGHT::S(F)
      • K(b);N_SPINR(a),S_FLIGHT,XR(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).