MESON Chess Problem Database

Problem Display
PID: 153310 (2r4b/1B3Q2/3Rp3/1p6/2k5/PN6/K1P1NR2/n2r2Bb w - - 0 1)

Rosner, Eugene David

StrateGems, 2012

2r4b/1B3Q2/3Rp3/1p6/2k5/PN6/K1P1NR2/n2r2Bb

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.cxd3#
    • 1...Rc5
      • 2.Sa5#
    • 1...b4
      • 2.Ba6#
  • Tries
    • 1.Rf5?
      • threat
        • 2.Sa5#
      • 1...Sxb3
        • 2.cxb3#
      • 1...Ra8
        • 2.Rc5#
      • 1...Bc3!
    • 1.Rf6?
      • threat
        • 2.Sa5#
      • 1...Rxg1
        • 2.Rd4#
      • 1...Sxb3
        • 2.cxb3#
      • 1...b4
        • 2.Ba6#
      • 1...Rd4
        • 2.Rxd4#
      • 1...Ra8!
  • Keys
    • 1.Rf3!
      • threat
        • 2.Sa5#
      • 1...Rxg1
        • 2.Qxe6#
      • 1...Sxb3
        • 2.cxb3#
      • 1...b4
        • 2.Ba6#
      • 1...Rd4
        • 2.Rc3#
      • 1...Ra8
        • 2.Qc7#
      • 1...Bc3
        • 2.Rxc3#
      • 1...Bd4
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • R(b);OGATE::P(C),XR(b)
    • R(g);SBLOCK::S(G)
    • P(e);OGATEB::B(I)
  • Tries
    • Try
      • R(E);
      • Threat
        • S(G)
      • Vars
        • S(a);OGATE,XS(G)::P(C),XS(a)
        • R(g);N_GUARD,P_PINP(F)::R1(E)
      • Refutation
        • B(h);
    • Try
      • R(E);
      • Threat
        • S(G)
      • Vars
        • R(b);N_GUARD,XB(A)::R1(H)
        • S(a);OGATE,XS(G)::P(C),XS(a)
        • P(e);OGATEB::B(I)
        • R(b);N_GUARD::R1(H),XR(b)
      • Refutation
        • R(g);P_PINP(F)
  • Actual
    • R(E);
    • Threat
      • S(G)
    • Vars
      • R(b);N_GUARD,XB(A)::QAB(J),XP(f)
      • S(a);OGATE,XS(G)::P(C),XS(a)
      • P(e);OGATEB::B(I)
      • R(b);S_CUTB(h)::R1(E)
      • R(g);N_GUARD,P_PINP(F)::QAR(J)
      • B(h);N_GUARD::R1(E),XB(h)
      • B(h);S_CUTR(b)::QAB(J),XP(f)
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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).