MESON Chess Problem Database

Problem Display
PID: 178825 (3K2b1/p3P1pr/2p1N1RP/r1pkB3/2p1NRP1/4p3/3PQ1q1/8 w - - 0 1)

Mosiashvili, Givi

Sachmatija, 2013

3K2b1/p3P1pr/2p1N1RP/r1pkB3/2p1NRP1/4p3/3PQ1q1/8

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...exd2
      • 2.Sc3#
  • Tries
    • 1.Rf5?
      • threat
        • 2.Sc3#
      • 1...Kxe4
        • 2.Qxc4#
      • 1...Qxe4
        • 2.Sc7#
      • 1...c3
        • 2.Sxc3#
        • 2.Qd3#
      • 1...Ra3!
    • 1.Qd3+?
      • 1...Kxe5
        • 2.Rf5#
        • 2.Qd6#
      • 1...cxd3!
    • 1.Qxc4+?
      • 1...Kxe5
        • 2.Rf5#
        • 2.Rg5#
      • 1...Kxc4!
    • 1.Qxe3?
      • threat
        • 2.Sc3#
      • 1...Kxe5
        • 2.Rf5#
      • 1...Qxe4
        • 2.Qxe4#
      • 1...c3
        • 2.Sxc3#
      • 1...Ra3
        • 2.Qxc5#
      • 1...Qxd2!
    • 1.e8Q?
      • threat
        • 2.Sc7#
      • 1...Kxe5
        • 2.Rg5#
      • 1...Bxe6
        • 2.Qxe6#
      • 1...gxh6!
  • Keys
    • 1.Rg5!
      • threat
        • 2.Sc7#
      • 1...Kxe6
        • 2.Qxc4#
      • 1...Bxe6
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(b);XP(A)::S(C)
  • Tries
    • Try
      • R(D);
      • Threat
        • S(C)
      • Vars
        • K(f);P_SPINP(b),S_FLIGHT,XS(C)::QAR2(B),XP(c)
        • Q(a);SBLOCK,XS(C)::S(G)
      • Refutation
        • R(d);
    • Try
      • Q(B);CHECK
      • Refutation
        • P(c);XQ(B)
    • Try
      • Q(B);CHECK,XP(c)
      • Refutation
        • K(f);S_FLIGHT,XQ(B)
    • Try
      • Q(B);XP(b)
      • Threat
        • S(C)
      • Vars
        • K(f);OGATEB,P-FLIGHT,XB(F)::R1(D)
        • Q(a);OGATE,XS(C)::QAB1(B),XQ(a)
        • P(c);::S(C),XP(c)
        • R(d);N_GUARD::QAR1(B),XP(e)
      • Refutation
        • Q(a);XP(A)
    • Try
      • P(J);
      • Threat
        • S(G)
      • Vars
        • K(f);OGATEB,P-FLIGHT,XB(F)::R(H)
        • B(k);OGATE,XS(G)::QAB1(J),XB(k)
      • Refutation
        • P(i);XP(I)
  • Actual
    • R(H);
    • Threat
      • S(G)
    • Vars
      • K(f);S_FLIGHT,XS(G)::QAB(B),XP(c)
      • B(k);SBLOCK,XS(G)::S(C)
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).