MESON Chess Problem Database

Problem Display
PID: 203451 (4Rn2/2K1pr1p/pNBPk1bp/P1p2R1p/1n5P/1N2r1P1/4p3/4B2Q w - - 0 1)

Markus, Gustav

Wastl, Rudolf

Deutsche-Osterreichische Tageszeitung, 1924

4Rn2/2K1pr1p/pNBPk1bp/P1p2R1p/1n5P/1N2r1P1/4p3/4B2Q

#2

12 + 13

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb3
      • 2.Qe4#
    • 1...Rc3
      • 2.Qe4#
    • 1...Rd3
      • 2.Qe4#
    • 1...Rxg3
      • 2.Qe4#
    • 1...Re4
      • 2.Qxe4#
    • 1...Sa2
      • 2.Qd5#
    • 1...Sc2
      • 2.Qd5#
    • 1...Sd3
      • 2.Qd5#
    • 1...Sd5+
      • 2.Qxd5#
    • 1...Sxc6
      • 2.Qd5#
    • 1...Sd7
      • 2.Bxd7#
    • 1...c4
      • 2.Sd4#
  • Tries
    • 1.Bd5+?
      • 1...Sxd5+
        • 2.Qxd5#
      • 1...Kxf5!
  • Keys
    • 1.Sd7!
      • 1...Sd5+
        • 2.Qxd5#
      • 1...Kxf5
        • 2.Qh3#
      • 1...Rxb3
        • 2.Re5#
        • 2.Qe4#
      • 1...Rxg3
        • 2.Re5#
        • 2.Qe4#
      • 1...Rxf5
        • 2.Rxe7#
      • 1...Bxf5
        • 2.Sbxc5#
      • 1...Sxc6
        • 2.Qd5#
      • 1...Sxd7
        • 2.Bxd7#
      • 1...Rf6
        • 2.Rxf6#
      • 1...Rc3
        • 2.Re5#
        • 2.Qe4#
      • 1...Rd3
        • 2.Re5#
        • 2.Qe4#
      • 1...Rf3
        • 2.Re5#
      • 1...Re4
        • 2.Qxe4#
      • 1...Re5
        • 2.Rxe5#
      • 1...Rg7
        • 2.Rf6#
      • 1...Sa2
        • 2.Qd5#
      • 1...Sc2
        • 2.Qd5#
      • 1...Sd3
        • 2.Qd5#
      • 1...c4
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 4
  • Sets
    • R(b);N_GUARD,XS(C)::QAR2(B)
    • R(b);N_GUARD::QAR2(B)
    • R(b);N_GUARD,XP(D)::QAR2(B)
    • R(b);N_GUARD::QAR2(B),XR(b)
    • S(c);N_GUARD::QAB1(B)
    • S(c);CHECK,N_GUARD::QAB1(B),XS(c)
    • S(c);N_GUARD,XB(I)::QAB1(B)
    • S(m);N_GUARD::B(I),XS(m)
    • P(d);N_GUARD::S(C)
  • Tries
    • Try
      • B(I);CHECK
      • Vars
        • S(c);CHECK,OGATE,XB(I)::QAB1(B),XS(c)
      • Refutation
        • K(g);N_SPINP(j),S_FLIGHT,XR(G)
  • Actual
    • S(H);
    • Vars
      • S(c);CHECK,N_GUARD::QAB1(B),XS(c)
      • K(g);N_SPINP(j),OGATEB,S_FLIGHT,XR(G)::QAB(B)
      • R(k);N_GUARD,SBLOCK,XR(G)::R1(L),XP(j)
      • B(h);SBLOCK,XR(G)::S(C),XP(d)
      • S(c);N_GUARD,XB(I)::QAB1(B)
      • S(m);OGATE,XS(H)::B(I),XS(m)
      • R(k);N_GUARD::R1(G),XR(k)
      • R(b);N_GUARD::R1(G)
      • R(b);N_GUARD::QAR2(B),XR(b)
      • R(b);N_GUARD::R1(G),XR(b)
      • R(k);N_GUARD::R1(G)
      • S(c);N_GUARD::QAB1(B)
      • P(d);N_GUARD::S(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).