MESON Chess Problem Database

Problem Display
PID: 202310 (1b5Q/3p1n2/Kp4p1/1P2p3/n2PkpB1/1R6/1pPR4/1r3B2 w - - 0 1)

Gross, Izidor

L'Alfiere di Re, 1923

1b5Q/3p1n2/Kp4p1/1P2p3/n2PkpB1/1R6/1pPR4/1r3B2

#2

9 + 11

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Qa8#
    • 1...Sd6
      • 2.Qxe5#
    • 1...exd4
      • 2.Rxd4#
      • 2.Qxd4#
  • Keys
    • 1.Qh1+!
      • 1...f3
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(k);OGATE::QAB(I)
    • S(j);N_GUARD,S_CUTB(k)::QAR1(I),XP(f)
  • Actual
    • Q(I);CHECK
    • Vars
      • P(e);P_SPINP(e)::QAB1(I),XP(e)
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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).