MESON Chess Problem Database

Problem Display
PID: 281823 (3b2Qn/2N5/4p3/2Rqpk2/1R1P3P/3P1pP1/b1BKN2B/8 w - - 0 1)

Craciun, Ovidiu

Zaragoza-65 JT (Problemas), 2025

3b2Qn/2N5/4p3/2Rqpk2/1R1P3P/3P1pP1/b1BKN2B/8

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bg5+
      • 2.Qxg5#
    • 1...Bf6
      • 2.g4#
    • 1...Bxc7
      • 2.Qg5#
    • 1...exd4
      • 2.Qxe6#
    • 1...e4
      • 2.Qxe6#
  • Tries
    • 1.Se8?
      • threat
        • 2.g4#
      • 1...Bg5+
        • 2.Qxg5#
      • 1...Qxd4
        • 2.Sxd4#
      • 1...Qe4
        • 2.dxe4#
      • 1...Sg6!
    • 1.Qg7?
      • threat
        • 2.g4#
      • 1...Bg5+
        • 2.Qxg5#
      • 1...Qxd4
        • 2.Sxd4#
      • 1...Qe4
        • 2.dxe4#
      • 1...Sg6!
  • Keys
    • 1.dxe5!
      • threat
        • 2.g4#
      • 1...Qxd3+
        • 2.Bxd3#
      • 1...Bg5+
        • 2.Qxg5#
      • 1...Kxe5
        • 2.Qxe6#
      • 1...Qxe5
        • 2.Rf4#
      • 1...Qc4
        • 2.dxc4#
      • 1...Qe4
        • 2.dxe4#
      • 1...Qd4
        • 2.Sxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • B(g);CHECK,N_GUARD::QAR1(L),XB(g)
    • B(g);SBLOCK::P(F)
    • B(g);N_GUARD,XS(K)::QAR1(L)
    • P(d);P_SPINQ(c),XP(H)::QAB1(L),XP(f)
    • P(d);P_SPINQ(c)::QAB1(L),XP(f)
  • Tries
    • Try
      • S(K);
      • Threat
        • P(F)
      • Vars
        • B(g);CHECK,N_GUARD::QAR1(L),XB(g)
        • Q(c);P_PINP(E),P_SPINP(d),XP(H)::S(C),XQ(c)
        • Q(c);OGATE,P_SPINP(d)::P(E),XQ(c)
      • Refutation
        • S(h);
    • Try
      • Q(L);
      • Threat
        • P(F)
      • Vars
        • B(g);CHECK,N_GUARD::QAR1(L),XB(g)
        • Q(c);P_PINP(E),P_SPINP(d),XP(H)::S(C),XQ(c)
        • Q(c);OGATE,P_SPINP(d)::P(E),XQ(c)
      • Refutation
        • S(h);
  • Actual
    • P(H);P_SPINP(E),XP(d)
    • Threat
      • P(F)
    • Vars
      • Q(c);CHECK,OGATE,P_SPINQ(c),XP(E)::B(A),XQ(c)
      • B(g);CHECK,N_GUARD::QAR1(L),XB(g)
      • K(e);P-FLIGHT,P_SPINQ(c),XP(H)::QAR1(L),XP(f)
      • Q(c);N_PINP(E),P_SPINQ(c),XP(H)::R1(G)
      • Q(c);N_PINP(E)::B(A)+P(E),XQ(c)
      • Q(c);N_PINP(E)::P(E),XQ(c)
      • Q(c);N_GUARD::S(C),XQ(c)
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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).