MESON Chess Problem Database

Problem Display
PID: 168930 (8/ppKNPn1r/1p1P2R1/2NkP2p/1p2R3/1P2p3/qn4bB/5Q1r w - - 0 1)

Shanshin, Valery Yurevich

Prize, SuperProblem, 2014

8/ppKNPn1r/1p1P2R1/2NkP2p/1p2R3/1P2p3/qn4bB/5Q1r

#2

11 + 13

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rh6
      • 2.Qxf7#
    • 1...Rh8
      • 2.Qxf7#
    • 1...Sd1
      • 2.Qd3#
      • 2.Qc4#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Sa4
      • 2.Qd3#
      • 2.Qc4#
    • 1...Sc4
      • 2.Qd3#
      • 2.Qxc4#
    • 1...Sxd6
      • 2.Rxd6#
  • Tries
    • 1.Qb5?
      • threat
        • 2.Sf6#
      • 1...Bxe4
        • 2.Se6#
      • 1...bxc5
        • 2.Qxb7#
      • 1...Rf1!
    • 1.Qf5?
      • threat
        • 2.Qe6#
      • 1...Bxe4
        • 2.Qxe4#
      • 1...bxc5
        • 2.Sf6#
      • 1...Sg5
        • 2.e6#
      • 1...Sd8
        • 2.e6#
      • 1...Bh3!
  • Keys
    • 1.Se6!
      • threat
        • 2.Rd4#
      • 1...Kxe4
        • 2.Sf6#
      • 1...Bxe4
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(m);N_GUARD::QAB(A),XS(l)
    • S(c);N_GUARD::QAR2(A),XS(c)
    • S(l);OGATE,XP(G)::R1(H),XS(l)
  • Tries
    • Try
      • Q(A);
      • Threat
        • S(J)
      • Vars
        • B(d);SBLOCK,XR(D)::QAR(A)+S(E)
        • P(i);OGATE,P_SPINP(i),XS(E)::QAB(A),XP(k)
      • Refutation
        • R(a);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • B(d);OGATE,XR(D)::QAB1(A),XB(d)
        • P(i);SBLOCK,XS(E)::S(J)
        • S(l);N_GUARD::QAR(A)+P(F)
      • Refutation
        • B(d);
  • Actual
    • S(E);
    • Threat
      • R1(D)
    • Vars
      • K(g);S_FLIGHT,XR(D)::S(J)
      • B(d);SBLOCK,XR(D)::QAR2(A)
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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).