MESON Chess Problem Database

Problem Display
PID: 66818 (8/B7/brB5/5Q1K/5bp1/6pP/Rr3N1p/2R2Nkn w - - 0 1)

Neumann, Itzhak

Skakbladet, 1934

8/B7/brB5/5Q1K/5bp1/6pP/Rr3N1p/2R2Nkn

#2

9 + 9

5828 My Selected Chess Problems (Neumann) 1968

SOLUTION

  • SOUND
  • Sets
    • 1...R2b5
      • 2.Se3#
    • 1...R6b5
      • 2.Sd2#
    • 1...gxh3
      • 2.Sxh3#
  • Tries
    • 1.Sd2+?
      • 1...Bf1
        • 2.Rxf1#
      • 1...Kxf2!
    • 1.Se3+?
      • 1...Bf1
        • 2.Rxf1#
      • 1...Kxf2!
    • 1.Sxg3+?
      • 1...Kxf2
        • 2.Qxf4#
      • 1...Bf1
        • 2.Rxf1#
      • 1...Bxc1!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Qg2#
      • 1...Kxf2
        • 2.Qg2#
      • 1...Rxf2
        • 2.Qxh1#
      • 1...Rxc6
        • 2.Qxh1#
      • 1...gxh3
        • 2.Sxh3#
      • 1...R2b5
        • 2.Se3#
      • 1...R6b5
        • 2.Sd2#
      • 1...g2
        • 2.Qxg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(c);P_PINQ(F),S_CUTB(h)::R(A)+S(B)
    • R(i);P_PINQ(F),S_CUTB(h)::R(A)+S(B)
    • P(g);XP(E)::S(D),XP(g)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • B(h);N_GUARD,P_SPINB(h)::R1(A),XB(h)
      • Refutation
        • K(a);P_SPINB(f),P_SPINR(i),S_FLIGHT,XS(D)
    • Try
      • S(B);CHECK
      • Vars
        • B(h);N_GUARD,P_SPINB(h)::R1(A),XB(h)
      • Refutation
        • K(a);P_SPINB(f),P_SPINR(c),S_FLIGHT,XS(D)
    • Try
      • S(B);CHECK,XP(e)
      • Vars
        • K(a);P_SPINB(f),P_SPINR(c),S_FLIGHT,XS(D)::QAR2(F),XB(f)
        • B(h);N_GUARD,P_SPINB(h)::R1(A),XB(h)
      • Refutation
        • B(f);XR(A)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • K(a);P_SPINR(c),S_FLIGHT,XS(D)::QAR1(F)
      • R(c);XS(D)::QAR1(F),XS(b)
      • R(i);XB(H)::QAR1(F),XS(b)
      • P(g);XP(E)::S(D),XP(g)
      • R(c);P_PINQ(F),S_CUTB(h)::R(A)+S(B)
      • R(i);P_PINQ(F),S_CUTB(h)::R(A)+S(B)
      • P(e);::QAR1(F),XP(e)
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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).