MESON Chess Problem Database

Problem Display
PID: 203531 (2NbR3/1K1p1pn1/5PQ1/1ppkN3/6BR/1p5p/1B1P3r/5b1q w - - 0 1)

Rauch, R

2nd Comm., Essener Arbeiter Schachzeitung, 1924

2NbR3/1K1p1pn1/5PQ1/1ppkN3/6BR/1p5p/1B1P3r/5b1q

#2

10 + 12

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qf3
      • 2.Bxf3#
    • 1...Qg1
      • 2.Bf3#
    • 1...Re2
      • 2.Qd3#
    • 1...Rg2
      • 2.Bf3#
    • 1...Bg2
      • 2.Qd3#
    • 1...Bd3
      • 2.Qxd3#
  • Tries
    • 1.Qe4+?
      • 1...Kxe4
        • 2.Be6#
      • 1...Qxe4!
    • 1.Qxf7+?
      • 1...Ke4
        • 2.Bxh3#
        • 2.Be6#
        • 2.Bxd7#
      • 1...Se6!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Se3#
      • 1...Kxc4+
        • 2.Bf3#
      • 1...Bxc4
        • 2.Re5#
      • 1...bxc4
        • 2.Re5#
      • 1...Qf3
        • 2.Bxf3#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Qg1
        • 2.Bf3#
        • 2.Qe4#
      • 1...Re2
        • 2.Qd3#
      • 1...Sf5
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • Q(b);N_GUARD::B(C),XQ(b)
    • Q(b);N_GUARD::B(C)
    • R(c);S_CUTB(a)::QAR2(G)
    • R(c);S_CUTQ(b)::B(C)
    • B(a);N_GUARD::QAR2(G)
    • B(a);N_GUARD::QAR2(G),XB(a)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • K(h);S_FLIGHT,XQ(G)::R(D)+B(C)
      • Refutation
        • Q(b);XQ(G)
    • Try
      • Q(G);CHECK,XP(j)
      • Refutation
        • S(k);P_SPINS(k)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(h);CHECK,S_FLIGHT,XS(E)::R(D)+B(C)
      • B(a);SBLOCK,XS(E)::R1(J)
      • P(f);SBLOCK,XS(E)::R1(J)
      • Q(b);N_GUARD::B(C),XQ(b)
      • Q(b);N_GUARD::QAB1(G),XQ(b)
      • R(c);S_CUTB(a)::QAR2(G)
      • S(k);N_GUARD::QAB(G),XP(j)
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).