MESON Chess Problem Database

Problem Display
PID: 176064 (2KQR3/pB3p2/3PnpN1/5P2/1P1k4/R1b5/1Nprp3/2B5 w - - 0 1)

Rauch, Fritz

Schach-Echo, 1936

2KQR3/pB3p2/3PnpN1/5P2/1P1k4/R1b5/1Nprp3/2B5

#2

11 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Qxf6#
    • 1...Rd3
      • 2.Qxf6#
    • 1...Sf4
      • 2.Re4#
      • 2.Qxf6#
    • 1...Sc5
      • 2.Qxf6#
    • 1...Sg5
      • 2.Qxf6#
    • 1...Sc7
      • 2.Re4#
      • 2.Qxf6#
      • 2.dxc7#
    • 1...Sg7
      • 2.Re4#
      • 2.Qxf6#
    • 1...Sxd8
      • 2.Re4#
    • 1...Sf8
      • 2.Re4#
      • 2.Qxf6#
  • Tries
    • 1.Qb6+?
      • 1...Sc5
        • 2.Re4#
        • 2.Qxc5#
      • 1...axb6!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qxc3#
      • 1...Ke3
        • 2.Qc5#
      • 1...Bxb2
        • 2.Bxb2#
      • 1...Bxb4
        • 2.Qc4#
      • 1...Sxc7
        • 2.Re4#
      • 1...Rd3
        • 2.Qc4#
      • 1...Sc5
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(b);::QAB(J),XP(g)
    • S(f);::QAB(J),XP(g)
    • S(f);OGATE,XQ(J)::R1(K)
  • Tries
    • Try
      • Q(J);CHECK
      • Refutation
        • P(h);XQ(J)
  • Actual
    • Q(J);
    • Threat
      • QAB1(J),XB(d)
    • Vars
      • K(e);P_SPINB(d),P_SPINR(b),P_SPINS(f),S_FLIGHT::QAB(J)
      • B(d);OGATE,XS(B)::B(A),XB(d)
      • B(d);XP(D)::QAR1(J)
      • S(f);OGATE,XQ(J)::R1(K)
      • R(b);::QAR1(J)
      • S(f);N_GUARD::QAB1(J),XS(f)
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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).