MESON Chess Problem Database

Problem Display
PID: 140181 (1B1N4/1p1Qp3/2p5/4p3/Rrk3BK/1N1p1P2/R2P4/8 w - - 0 1)

Klein, A

Probleemblad, 1975

1B1N4/1p1Qp3/2p5/4p3/Rrk3BK/1N1p1P2/R2P4/8

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kxb3
      • 2.Qxd3#
    • 1...c5
      • 2.Sa5#
      • 2.Be6#
    • 1...b5
      • 2.Be6#
      • 2.Qe6#
  • Tries
    • 1.Qxc6+?
      • 1...Kxb3
        • 2.R4a3#
        • 2.Qc3#
      • 1...bxc6!
    • 1.Qd4+?
      • 1...Kxb3
        • 2.R4a3#
        • 2.Qc3#
        • 2.Qxd3#
        • 2.Qxb4#
      • 1...Kb5
        • 2.Rxb4#
        • 2.Ra5#
        • 2.Qc5#
        • 2.Qxb4#
      • 1...exd4!
  • Keys
    • 1.Qxb7!
      • threat
        • 2.Be6#
      • 1...Kxb3
        • 2.Qxb4#
      • 1...Kd5
        • 2.Qxc6#
      • 1...e6
        • 2.Bxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINR(b),P_PINB(F),S_FLIGHT,XS(C)::QAR2(H),XP(a)
  • Tries
    • Try
      • Q(H);CHECK,XP(e)
      • Refutation
        • P(f);XQ(H)
    • Try
      • Q(H);CHECK
      • Refutation
        • P(d);XQ(H)
  • Actual
    • Q(H);XP(f)
    • Threat
      • B(F)
    • Vars
      • K(c);P_PINB(F),S_FLIGHT,XS(C)::QAR1(H),XR(b)
      • K(c);N_SPINR(b),P_PINB(F),P_SPINP(e),S_FLIGHT::QAB1(H),XP(e)
      • P(g);::B(F),XP(g)
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).