MESON Chess Problem Database

Problem Display
PID: 6179 (r2nR1B1/8/5ppB/1pQKNkq1/3p3R/6p1/6N1/1r2n3 w - - 0 1)

Neunivako, Pavel Efimovich

3rd HM., Shakhmaty, 1927

r2nR1B1/8/5ppB/1pQKNkq1/3p3R/6p1/6N1/1r2n3

#2

8 + 11

3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Qf4
      • 2.Rxf4#
    • 1...Qxh4
      • 2.Sxh4#
    • 1...Qh5
      • 2.Rf4#
    • 1...Sc6
      • 2.Be6#
    • 1...Se6
      • 2.Bxe6#
    • 1...Sb7
      • 2.Be6#
  • Tries
    • 1.Qc8+?
      • 1...Se6
        • 2.Bxe6#
        • 2.Qxe6#
      • 1...Rxc8!
  • Keys
    • 1.Kxd4!
      • threat
        • 2.Sd3#
        • 2.Sf3#
        • 2.Sc4#
        • 2.Sg4#
        • 2.Sc6#
        • 2.Sd7#
        • 2.Sf7#
      • 1...Qd2+
        • 2.Sd3#
      • 1...Qe3+
        • 2.Sxe3#
      • 1...Qf4+
        • 2.Rxf4#
      • 1...Qxh4+
        • 2.Sxh4#
      • 1...Qg4+
        • 2.Sxg4#
      • 1...Rd1+
        • 2.Sd3#
      • 1...Rb4+
        • 2.Sc4#
      • 1...Ra4+
        • 2.Sc4#
      • 1...Sc2+
        • 2.Qxc2#
      • 1...Sf3+
        • 2.Sxf3#
      • 1...Sc6+
        • 2.Sxc6#
      • 1...Se6+
        • 2.Bxe6#
      • 1...fxe5+
        • 2.Qxe5#
      • 1...Sxg2
        • 2.Sd3#
        • 2.Sf3#
        • 2.Sc4#
        • 2.Sc6#
        • 2.Sd7#
        • 2.Sf7#
        • 2.Qc2#
      • 1...Qc1
        • 2.Sc4#
      • 1...Rc1
        • 2.Sc4#
      • 1...Rc8
        • 2.Sc6#
      • 1...Sd3
        • 2.Sxd3#
      • 1...Sb7
        • 2.Be6#
      • 1...Sf7
        • 2.Sxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 14
    • REMOVED MATES = 1
  • Sets
    • Q(g);N_GUARD::R1(B),XQ(g)
    • Q(g);XR(B)::S(A),XQ(g)
    • Q(g);N_GUARD::R1(B)
    • S(k);N_GUARD::B(H)
    • S(k);N_GUARD::B(H),XS(k)
  • Tries
    • Try
      • Q(C);CHECK
      • Refutation
        • R(j);XQ(C)
  • Actual
    • K(D);P-FLIGHT,XP(d)
    • Threat
      • DUALS(7)
    • Vars
      • Q(g);CHECK::QAR(C)+S(E)
      • Q(g);CHECK,N_GUARD::S(A),XQ(g)
      • Q(g);CHECK,N_GUARD::R1(B),XQ(g)
      • Q(g);CHECK,XR(B)::S(A),XQ(g)
      • Q(g);CHECK::QAR(C)+S(E),XQ(g)
      • R(a);CHECK::QAR(C)+S(E)
      • R(j);CHECK::QAR(C)+S(E)
      • S(b);CHECK,N_GUARD::QAB(C),XS(b)
      • S(b);CHECK::QAR(C)+S(E),XS(b)
      • S(k);CHECK::QAR(C)+S(E),XS(k)
      • S(k);CHECK,N_GUARD::B(H),XS(k)
      • P(h);CHECK,OGATE,P_SPINP(h),XS(E)::QAR1(C),XP(h)
      • Q(g);::QAR(C)+S(E)
      • R(a);::QAR(C)+S(E)
      • R(j);::QAR(C)+S(E)
      • S(b);::QAR(C)+S(E),XS(b)
      • S(k);N_GUARD::B(H)
      • S(k);::QAR(C)+S(E),XS(k)
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).