MESON Chess Problem Database

Problem Display
PID: 203626 (7B/K1N3nr/3ppnb1/R6p/1P1k4/1Ppp1Ppq/5P2/Q7 w - - 0 1)

Roura, Juan R

Brisbane Courier, 1924

7B/K1N3nr/3ppnb1/R6p/1P1k4/1Ppp1Ppq/5P2/Q7

#2

9 + 12

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sg4
      • 2.Sxe6#
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qe3#
      • 1...gxf2
        • 2.Qxf2#
      • 1...Sg4
        • 2.Sxe6#
      • 1...Sd5
        • 2.Sb5#
      • 1...Sf5
        • 2.Qe4#
      • 1...c2
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(i);P_SPINS(k),S_CUTQ(d)::S(H),XP(h)
  • Actual
    • Q(A);N_PINP(a)
    • Threat
      • QAB1(A)
    • Vars
      • P(c);OGATE,XP(B)::QAB(A),XP(c)
      • S(i);P_SPINS(k),S_CUTQ(d)::S(H),XP(h)
      • S(i);P_SPINS(k),SBLOCK::S(H)
      • S(k);P_PINS(H),P_SPINS(i),S_CUTB(j)::QAR1(A)
      • P(a);OGATEB::QAB(A)
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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).