MESON Chess Problem Database

Problem Display
PID: 203544 (7K/3Bp2N/2P1n1R1/2r1k2p/2p2b1R/B1N5/2P2P2/3Q4 w - - 0 1)

Usath, Walter

3rd Prize, Essener Arbeiter Schachzeitung, 1924

7K/3Bp2N/2P1n1R1/2r1k2p/2p2b1R/B1N5/2P2P2/3Q4

#2

11 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Qxd5#
    • 1...Rxc6
      • 2.Qd5#
  • Keys
    • 1.Qf3!
      • 1...Kd4
        • 2.Qe3#
      • 1...Kf5
        • 2.Rg5#
        • 2.Qe4#
      • 1...Kd6
        • 2.Qxf4#
      • 1...Rxc6
        • 2.Qe4#
        • 2.Qd5#
      • 1...Ra5
        • 2.Qe4#
      • 1...Rb5
        • 2.Qe4#
      • 1...Rd5
        • 2.Qe4#
        • 2.Qxd5#
      • 1...Bc1
        • 2.Rxe6#
      • 1...Bd2
        • 2.Rxe6#
      • 1...Bh2
        • 2.Rxe6#
      • 1...Be3
        • 2.Rxe6#
      • 1...Bg3
        • 2.Rxe6#
      • 1...Bg5
        • 2.Rxe6#
      • 1...Bh6
        • 2.Rxe6#
      • 1...Sd4
        • 2.Qe4#
        • 2.Qxf4#
      • 1...Sg5
        • 2.Qxf4#
      • 1...Sc7
        • 2.Qe4#
        • 2.Qxf4#
      • 1...Sg7
        • 2.Qe4#
        • 2.Qxf4#
      • 1...Sd8
        • 2.Qe4#
        • 2.Qxf4#
      • 1...Sf8
        • 2.Qe4#
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 2
  • Sets
    • R(c);N_GUARD::QAR1(A),XR(c)
    • R(c);N_GUARD,XP(G)::QAR1(A)
  • Actual
    • Q(A);
    • Vars
      • K(d);P_SPINB(b),S_FLIGHT::QAB1(A)
      • K(d);P_SPINR(c),P_SPINS(f),S_FLIGHT::QAB(A),XB(b)
      • R(c);::QAR1(A)
      • B(b);::R1(H),XS(f)
      • S(f);N_GUARD::QAB1(A),XB(b)
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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).