MESON Chess Problem Database

Problem Display
PID: 264027 (8/8/p2N2p1/Rb4R1/7k/7P/4n2K/2BB4 w - - 0 1)

Zaldo Zapirain, Juan

Tijdschrift vd KNSB, 1951

8/8/p2N2p1/Rb4R1/7k/7P/4n2K/2BB4

#2

7 + 5

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Rg4#
    • 1...Ba4
      • 2.Rg4#
    • 1...Bc4
      • 2.Rg4#
    • 1...Bc6
      • 2.Rg4#
    • 1...Be8
      • 2.Rg4#
  • Tries
    • 1.Rh5+?
      • 1...gxh5
        • 2.Sf5#
      • 1...Kxh5!
  • Keys
    • 1.Rxg6!
      • threat
        • 2.Rh6#
      • 1...Kh5
        • 2.Rh6#
      • 1...Sxc1
        • 2.Sf5#
      • 1...Be8
        • 2.Rg4#
      • 1...Sg3
        • 2.Bg5#
      • 1...Sf4
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • B(c);::R1(F)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • P(e);SBLOCK,XR(F)::S(G)
      • Refutation
        • K(b);P-FLIGHT,P_SPINB(c),P_SPINS(a),XR(F)
  • Actual
    • R(F);XP(e)
    • Threat
      • R(F)
    • Vars
      • K(b);P-FLIGHT,P_SPINB(c),P_SPINS(a)::R1(F)
      • S(a);XB(A)::S(G)
      • B(c);::R1(F)
      • S(a);::B(A)
      • S(a);::S(G)
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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).