MESON Chess Problem Database

Problem Display
PID: 137357 (7Q/K3N3/1pR1b3/ppbp4/1k6/pBp3r1/P5r1/1R5q w - - 0 1)

Ellerman, Arnoldo

Magyar Sakkvilag, 1935

7Q/K3N3/1pR1b3/ppbp4/1k6/pBp3r1/P5r1/1R5q

#2

7 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Bc2#
    • 1...Bf2
      • 2.Bd1#
    • 1...Be3
      • 2.Qxc3#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Bd6
      • 2.Qd4#
    • 1...Bxe7
      • 2.Qd4#
    • 1...Bh3
      • 2.Sxd5#
    • 1...Bg4
      • 2.Sxd5#
    • 1...Bf5
      • 2.Sxd5#
    • 1...Bd7
      • 2.Sxd5#
    • 1...Bc8
      • 2.Sxd5#
  • Keys
    • 1.Rc7!
      • threat
        • 2.Sc6#
      • 1...Bxe7
        • 2.Qd4#
      • 1...Bg1
        • 2.Bc2#
      • 1...Bf2
        • 2.Bd1#
      • 1...Be3
        • 2.Qxc3#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Bd6
        • 2.Qd4#
      • 1...Bd7
        • 2.Sxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • B(i);S_CUTQ(a)::R(A)+B(C)
    • B(i);S_CUTR(b)::R(A)+B(C)
    • B(i);S_CUTR(e)::QAB1(G),XP(d)
    • B(i);N_GUARD::QAR2(G),XB(i)
    • B(i);N_GUARD::QAR2(G)
    • B(i);N_GUARD,XS(F)::QAR2(G)
    • B(l);N_GUARD::S(F),XP(j)
  • Actual
    • R(D);
    • Threat
      • S(F)
    • Vars
      • B(i);N_GUARD,XS(F)::QAR2(G)
      • B(i);S_CUTQ(a)::R(A)+B(C)
      • B(i);S_CUTR(b)::R(A)+B(C)
      • B(i);S_CUTR(e)::QAB1(G),XP(d)
      • B(i);N_GUARD::QAR2(G),XB(i)
      • B(i);N_GUARD::QAR2(G)
      • B(l);N_GUARD::S(F),XP(j)
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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).