MESON Chess Problem Database

Problem Display
PID: 96656 (4n1Q1/Kp1b4/2pNR3/p1k1p2n/2p2p1r/7p/2N2P2/6BB w - - 0 1)

Reilly, William Henry

The Chess Problem, 1944

4n1Q1/Kp1b4/2pNR3/p1k1p2n/2p2p1r/7p/2N2P2/6BB

#2

8 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sg3
      • 2.fxg3#
    • 1...Sxd6
      • 2.Rxe5#
    • 1...e4
      • 2.Qg5#
    • 1...b5
      • 2.Sb7#
  • Tries
    • 1.Se4+?
      • 1...Kd5
        • 2.Rd6#
      • 1...Kb5!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Qa3#
      • 1...Sxg3
        • 2.fxg3#
      • 1...Sxd6
        • 2.Rxe5#
      • 1...fxg3
        • 2.f4#
      • 1...f3
        • 2.Qxe5#
      • 1...e4
        • 2.Qg5#
      • 1...c3
        • 2.Qxc3#
      • 1...b5
        • 2.Sb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(h);OGATE::B(A)+P(D),XS(h)
    • S(l);SBLOCK,XS(E)::R(F),XP(g)
    • P(g);OGATEB::QAR(H)
    • P(j);SBLOCK::S(E)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(f);P-FLIGHT::QAB(H)+R(F),DCHECK
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • Q(H);
    • Threat
      • QAB(H)
    • Vars
      • S(h);OGATE,XQ(H)::B(A)+P(D),XS(h)
      • S(l);SBLOCK,XS(E)::R(F),XP(g)
      • P(c);OGATE,XQ(H)::B(A)+P(D)
      • P(c);OGATE::QAR2(H),XP(g)
      • P(g);OGATEB::QAR(H)
      • P(b);OGATEB::QAR2(H),XP(b)
      • P(j);SBLOCK::S(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).