MESON Chess Problem Database

Problem Display
PID: 156073 (7b/8/5QB1/K2P4/1p3B2/1p1R3p/2k3qR/1bN5 w - - 0 1)

Snerdlow, J

Nederlandse Bond van Probleemvrienden, 1932

7b/8/5QB1/K2P4/1p3B2/1p1R3p/2k3qR/1bN5

#2

8 + 7

1577 Jaarboek 1932

SOLUTION

  • SOUND
  • Sets
    • 1...Qe2
      • 2.Rxe2#
    • 1...Qf2
      • 2.Rxf2#
  • Tries
    • 1.Rc3+?
      • 1...Kb2
        • 2.Rxb3#
      • 1...Kd1!
  • Keys
    • 1.Se2!
      • threat
        • 2.Rd2#
      • 1...Qxd5+
        • 2.Rxd5#
      • 1...Qxe2
        • 2.Rxe2#
      • 1...b2
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(c);OGATE::R(B),XQ(c)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB(G)+R(C),DCHECK,XP(d)
      • Refutation
        • K(b);N_SPINQ(c),S_FLIGHT
  • Actual
    • S(A);N_PINQ(c)
    • Threat
      • B(H)+R(C),DCHECK
    • Vars
      • Q(c);CHECK,OGATE,XP(F)::B(H)+R(C),XQ(c)
      • Q(c);OGATE,P_SPINQ(c),XS(A)::R(B),XQ(c)
      • P(d);SBLOCK::S(A)
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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).