MESON Chess Problem Database

Problem Display
PID: 278082 (b7/1N6/4nr2/4pR1B/1n2kP1b/4N3/2P2p2/B4Q1K w - - 0 1)

Shire, David J

Vinagre, Jose Casimiro

Phenix, 2007

b7/1N6/4nr2/4pR1B/1n2kP1b/4N3/2P2p2/B4Q1K

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe3
      • 2.Qe2#
    • 1...Sa2
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Sd5
      • 2.Qd3#
    • 1...Sa6
      • 2.Qd3#
    • 1...Sc6
      • 2.Qd3#
    • 1...Sxf4
      • 2.Rxe5#
    • 1...exf4
      • 2.Re5#
  • Tries
    • 1.Sg2?
      • threat
        • 2.Rxe5#
      • 1...Kd5
        • 2.Bf3#
      • 1...Kxf5
        • 2.Sd6#
      • 1...exf4
        • 2.Sd6#
        • 2.Re5#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sc6
        • 2.Qd3#
      • 1...Rxf5!
    • 1.Bf3+?
      • 1...Kxe3
        • 2.Qe2#
      • 1...Kxf3!
    • 1.Qc4+?
      • 1...Kxe3
        • 2.Qe2#
      • 1...Sd4!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Rxe5#
      • 1...Kxd5
        • 2.Bf3#
      • 1...Kxf5
        • 2.Sd6#
      • 1...Rxf5
        • 2.Qg2#
      • 1...Sxd5
        • 2.Qd3#
      • 1...exf4
        • 2.Sd6#
        • 2.Re5#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sc6
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • K(c);OGATEB,P-FLIGHT,P_PINS(I),XS(E)::QAR1(B)
    • S(b);N_GUARD::QAB1(B)
    • S(b);N_GUARD::QAB1(B),XS(b)
    • S(f);SBLOCK,XP(F)::R1(G),XP(e)
    • P(e);SBLOCK,XP(F)::R1(G)
  • Tries
    • Try
      • S(E);
      • Threat
        • R1(G),XP(e)
      • Vars
        • K(c);N_GUARD,P_SPINP(e),S_FLIGHT::B(H)
        • K(c);N_GUARD,S_FLIGHT,XR(G)::S(I)
        • S(b);N_GUARD::QAB1(B),XS(b)
        • S(b);N_GUARD::QAB1(B)
      • Refutation
        • R(g);XR(G)
    • Try
      • B(H);CHECK
      • Vars
        • K(c);P-FLIGHT,XS(E)::QAR1(B)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT,XB(H)
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);OGATEB,P-FLIGHT,P_PINS(I),XS(E)::QAR1(B)
      • Refutation
        • S(f);P_SPINS(f)
  • Actual
    • S(E);
    • Threat
      • R1(G),XP(e)
    • Vars
      • K(c);N_GUARD,P_SPINP(e),S_FLIGHT,XS(E)::B(H)
      • K(c);N_GUARD,S_FLIGHT,XR(G)::S(I)
      • R(g);SBLOCK,XR(G)::QAB(B)
      • S(b);N_GUARD,XS(E)::QAB1(B)
      • S(b);N_GUARD::QAB1(B),XS(b)
      • S(b);N_GUARD::QAB1(B)
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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).