MESON Chess Problem Database

Problem Display
PID: 163811 (2b2rN1/2p1R3/2pp2p1/1NP2kp1/2Q5/2p5/3P2Kn/1qb5 w - - 0 1)

Livnat, Noam

StrateGems, 2014

2b2rN1/2p1R3/2pp2p1/1NP2kp1/2Q5/2p5/3P2Kn/1qb5

#2

7 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.Qe4#
    • 1...Qe4+
      • 2.Qxe4#
    • 1...Qa1
      • 2.Qe4#
    • 1...Qb2
      • 2.Qe4#
    • 1...Qb3
      • 2.Qe4#
    • 1...Qxb5
      • 2.Qe4#
    • 1...Rf6
      • 2.Sh6#
    • 1...c2
      • 2.Qe4#
  • Keys
    • 1.Kg3!
      • threat
        • 2.Sd4#
      • 1...Qd3+
        • 2.Qxd3#
      • 1...Sf1+
        • 2.Qxf1#
      • 1...Qxb5
        • 2.Qe4#
      • 1...Rxg8
        • 2.Qf7#
      • 1...cxb5
        • 2.Qd5#
      • 1...dxc5
        • 2.Qxc5#
      • 1...Be6
        • 2.Qxe6#
      • 1...g4
        • 2.Qf4#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Sf3
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 6
  • Sets
    • Q(a);N_GUARD,P_PINP(A)::QAB1(C)
    • Q(a);CHECK,N_GUARD::QAB1(C),XQ(a)
    • Q(a);N_GUARD::QAB1(C)
    • Q(a);N_GUARD,XS(D)::QAB1(C)
    • R(l);SBLOCK::S(G)
    • P(d);S_CUTQ(a)::QAB1(C)
  • Actual
    • K(B);P-FLIGHT
    • Threat
      • S(D)
    • Vars
      • Q(a);CHECK,N_GUARD::QAB(C),XQ(a)
      • S(c);CHECK,N_GUARD::QAR(C),XS(c)
      • Q(a);N_GUARD,XS(D)::QAB1(C)
      • R(l);N_GUARD,XS(G)::QAR2(C)
      • P(g);N_GUARD,XS(D)::QAR2(C)
      • P(h);OGATE,XP(E)::QAR(C),XP(h)
      • B(k);N_GUARD::QAB1(C),XB(k)
      • P(f);N_GUARD::QAR1(C)
      • Q(a);N_GUARD::QAB1(C),XQ(a)
      • S(c);N_GUARD::QAB1(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).