MESON Chess Problem Database

Problem Display
PID: 139526 (Q7/6nB/4p2q/1K1p1r1n/1P2k1N1/1Np1bR2/6P1/8 w - - 0 1)

Ellerman, Arnoldo

L'Eco degli Scacchi, 1917

Q7/6nB/4p2q/1K1p1r1n/1P2k1N1/1Np1bR2/6P1/8

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Rxe3#
  • Keys
    • 1.Qa2!
      • threat
        • 2.Qc2#
      • 1...d4+
        • 2.Sc5#
      • 1...Kd3
        • 2.Sf2#
      • 1...Sf4
        • 2.Rxe3#
      • 1...c2
        • 2.Qxc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(f);SBLOCK,S_CUTQ(h)::R1(C),XB(b)
  • Actual
    • Q(H);N_PINP(d)
    • Threat
      • QAB(H)
    • Vars
      • P(d);CHECK,SBLOCK,S_CUTB(b)::S(B)
      • K(c);P_SPINB(b),S_FLIGHT::S(E)
      • S(f);SBLOCK,S_CUTQ(h)::R1(C),XB(b)
      • P(a);::QAB(H),XP(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).