MESON Chess Problem Database

Problem Display
PID: 76004 (8/8/3PQPp1/p2NKpp1/pP1P1P2/rRp5/2pBkpB1/3b1N2 w - - 0 1)

Vieira, Ricardo de Mattos

12th Place, Liga Problemista, 2007

8/8/3PQPp1/p2NKpp1/pP1P1P2/rRp5/2pBkpB1/3b1N2

#2

12 + 11

273 Mat Plus 2007

SOLUTION

  • SOUND
  • Sets
    • 1...gxf4
      • 2.Sxf4#
  • Tries
    • 1.Sb6?
      • threat
        • 2.Qc4#
      • 1...Kd3
        • 2.Qc4#
      • 1...cxd2
        • 2.Kd5#
      • 1...c1S!
    • 1.Qxf5?
      • threat
        • 2.Sxc3#
        • 2.Qe4#
      • 1...Rxb3
        • 2.Qe4#
      • 1...cxd2
        • 2.Qe4#
      • 1...axb4
        • 2.Qe4#
      • 1...c1Q
        • 2.Qe4#
      • 1...c1R
        • 2.Qe4#
      • 1...gxf5!
    • 1.d7?
      • threat
        • 2.Qa6#
      • 1...Kd3
        • 2.Qa6#
      • 1...cxd2
        • 2.Kd6#
      • 1...c1S!
  • Keys
    • 1.fxg5!
      • threat
        • 2.Sf4#
      • 1...Kd3
        • 2.Sf4#
      • 1...cxd2
        • 2.Kf4#
      • 1...f4
        • 2.Sxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(j);XP(G)::S(H),XP(j)
  • Tries
    • Try
      • S(H);
      • Threat
        • QAB(K)
      • Vars
        • K(c);P_SPINP(f),S_FLIGHT::QAB1(K)
        • P(f);XB(B)::QAR(K)+K(I)
      • Refutation
        • P(b);
    • Try
      • Q(K);XP(i)
      • Threat
        • DUALS(2)
      • Vars
        • R(e);XR(D)::QAR2(K)
        • P(f);XB(B)::QAR2(K)
        • P(h);XP(E)::QAR2(K)
        • P(b);::QAR2(K)
      • Refutation
        • P(k);XQ(K)
    • Try
      • P(J);
      • Threat
        • QAB(K)
      • Vars
        • K(c);P_SPINP(f),S_FLIGHT::QAB(K)
        • P(f);XB(B)::QAR(K)+K(I)
      • Refutation
        • P(b);
  • Actual
    • P(G);XP(j)
    • Threat
      • S(H)
    • Vars
      • K(c);P_SPINP(f),S_FLIGHT::S(H)
      • P(f);XB(B)::QAR(K)+K(I)
      • P(i);::S(H),XP(i)
HTML5 logo

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).