MESON Chess Problem Database

Problem Display
PID: 151047 (Rq3kN1/2pB2NP/r3P3/1r6/8/6Qp/1p5K/8 w - - 0 1)

Adabashev, Mark Ivanovich

Die Schwalbe, 1930

Rq3kN1/2pB2NP/r3P3/1r6/8/6Qp/1p5K/8

#2

8 + 7

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qc8
      • 2.Rxc8#
    • 1...Qd8
      • 2.Rxd8#
    • 1...Qe8
      • 2.Rxe8#
    • 1...Rba5
      • 2.Rxb8#
    • 1...Rc5
      • 2.Rxb8#
    • 1...Rd5
      • 2.Rxb8#
    • 1...Re5
      • 2.Rxb8#
    • 1...Rf5
      • 2.Rxb8#
    • 1...Rh5
      • 2.Rxb8#
  • Tries
    • 1.Sf5?
      • threat
        • 2.Qg7#
      • 1...Rxf5
        • 2.Rxb8#
      • 1...c6
        • 2.Qd6#
      • 1...c5!
  • Keys
    • 1.Sh5!
      • threat
        • 2.Qg7#
      • 1...Rxh5
        • 2.Rxb8#
      • 1...Rg5
        • 2.Rxb8#
      • 1...c5
        • 2.Qf4#
      • 1...c6
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • Q(f);OGATE::R(G),XQ(f)
    • Q(f);OGATE::R1(G),XQ(f)
    • R(c);N_GUARD::R(G),XQ(f)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAB1(B)
      • Vars
        • R(c);N_GUARD,XS(E)::R(G),XQ(f)
        • P(e);N_GUARD,P_PINQ(B),S_CUTR(d)::QAB(B)
      • Refutation
        • P(e);P_PINQ(B)
  • Actual
    • S(E);
    • Threat
      • QAB1(B)
    • Vars
      • R(c);N_GUARD,XS(E)::R(G),XQ(f)
      • R(c);N_GUARD::R(G),XQ(f)
      • P(e);P_PINQ(B),S_CUTR(c)::QAR(B)
      • P(e);N_GUARD,P_PINQ(B),S_CUTR(d)::QAB(B)
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).