MESON Chess Problem Database

Problem Display
PID: 198159 (8/3NpN2/2P1k1Pb/3b1n2/2r1P1Kp/2prp1p1/B5Q1/8 w - - 0 1)

Ellerman, Arnoldo

L'Italia Scacchistica, 1920

8/3NpN2/2P1k1Pb/3b1n2/2r1P1Kp/2prp1p1/B5Q1/8

#2

8 + 11

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe4+
      • 2.Qxe4#
    • 1...Rc5
      • 2.exf5#
    • 1...Bxe4
      • 2.Qxe4#
    • 1...Bf4
      • 2.exf5#
    • 1...Sd4
      • 2.exd5#
    • 1...Sd6
      • 2.Sd8#
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qxf5#
      • 1...Rxe4+
        • 2.Qxe4#
      • 1...Bxe4
        • 2.Qxe4#
      • 1...Bf4
        • 2.exf5#
      • 1...Sd4
        • 2.exd5#
      • 1...Sd6
        • 2.Sd8#
      • 1...Sg7
        • 2.Sf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(e);CHECK,OGATE,P_SPINB(g),XP(C)::QAR2(B),XR(e)
    • R(e);N_PINP(C),P_SPINB(g)::P(C),XS(h)
    • B(g);OGATE,P_SPINR(e),XP(C)::QAR2(B),XB(g)
    • B(j);N_PINP(C)::P(C),XS(h)
    • S(h);N_PINP(C)::P(C),XB(g)
    • S(h);SBLOCK::S(H)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B),XS(h)
    • Vars
      • R(e);CHECK,OGATE,P_SPINB(g),XP(C)::QAR2(B),XR(e)
      • B(g);OGATE,P_SPINR(e),XP(C)::QAR2(B),XB(g)
      • B(j);N_PINP(C)::P(C),XS(h)
      • S(h);N_PINP(C)::P(C),XB(g)
      • S(h);SBLOCK::S(H)
      • S(h);S_CUTB(j)::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).