MESON Chess Problem Database

Problem Display
PID: 261990 (2k1NRr1/1bP2p2/Bp4p1/1Q1pn3/2rR1N2/2p5/6K1/8 w - - 0 1)

Fastosky, Pedro

Problemnoter, 1959

2k1NRr1/1bP2p2/Bp4p1/1Q1pn3/2rR1N2/2p5/6K1/8

#2

8 + 10

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc7
      • 2.Sd6#
  • Tries
    • 1.Qxd5?
      • threat
        • 2.Bxb7#
        • 2.Qxb7#
      • 1...Rxd4
        • 2.Bxb7#
      • 1...Bxa6
        • 2.Qa8#
      • 1...Rc6
        • 2.Qd8#
      • 1...Sc6
        • 2.Qd7#
      • 1...Rxc7!
  • Keys
    • 1.Sxd5!
      • threat
        • 2.Sd6#
      • 1...Rc6
        • 2.Se7#
      • 1...Sc6
        • 2.Sxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(b);SBLOCK,XP(F)::R(H)+S(G),DCHECK
  • Tries
    • Try
      • Q(D);P_SPINQ(D),XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • R(b);XR(B)::B(E),XB(g)
        • B(g);N_PINQ(D),N_SPINB(g),XB(E)::QAR2(D)
        • R(b);N_PINQ(D)::QAR1(D)
        • S(d);N_PINQ(D)::QAB1(D)
      • Refutation
        • R(b);XP(F)
  • Actual
    • S(C);P_SPINS(C),XP(c)
    • Threat
      • R(H)+S(G),DCHECK
    • Vars
      • R(b);N_PINS(C)::S(C)
      • S(d);N_PINS(C)::S(C),XP(e)
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).