MESON Chess Problem Database

Problem Display
PID: 90125 (3Q4/8/5N2/2ppp3/P1RbR1P1/3k4/P2B2P1/3K4 w - - 0 1)

Sujitno, K

Die Schwalbe, 1964

3Q4/8/5N2/2ppp3/P1RbR1P1/3k4/P2B2P1/3K4

#2

10 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Rc3#
    • 1...Bf2
      • 2.Rc3#
    • 1...Bc3
      • 2.Rxc3#
    • 1...Be3
      • 2.Rc3#
    • 1...dxc4
      • 2.Re3#
    • 1...dxe4
      • 2.Rc3#
  • Tries
    • 1.Re3+?
      • 1...Kxc4
        • 2.Qxd5#
      • 1...Bxe3!
  • Keys
    • 1.Sd7!
      • 1...Kxc4
        • 2.Sxe5#
      • 1...Kxe4
        • 2.Sxc5#
      • 1...dxc4
        • 2.Sxc5#
      • 1...dxe4
        • 2.Sxe5#
      • 1...Ba1
        • 2.Sxc5#
      • 1...Bg1
        • 2.Sxe5#
      • 1...Bb2
        • 2.Sxc5#
      • 1...Bf2
        • 2.Sxe5#
      • 1...Bc3
        • 2.Sxc5#
      • 1...Be3
        • 2.Sxe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 6
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(b);N_GUARD,P_SPINP(d)::R1(F)
    • B(b);N_GUARD,P_SPINP(d)::R1(F),XB(b)
    • P(d);P_SPINB(b),SBLOCK,XR(F)::R1(G)
    • P(d);P_SPINB(b),XR(G)::R1(F)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(a);S_FLIGHT,XR(F)::QAB1(J),XP(d)
      • Refutation
        • B(b);P_SPINP(d),XR(G)
  • Actual
    • S(I);
    • Vars
      • K(a);P_SPINB(b),S_FLIGHT,XR(F)::S(I),XP(e)
      • K(a);P_SPINB(b),S_FLIGHT,XR(G)::S(I),XP(c)
      • P(d);SBLOCK,S_CUTB(b),XR(F)::S(I),XP(c)
      • P(d);SBLOCK,S_CUTB(b),XR(G)::S(I),XP(e)
      • B(b);N_GUARD::S(I),XP(c)
      • B(b);N_GUARD::S(I),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).