MESON Chess Problem Database

Problem Display
PID: 143925 (2nK1B2/2QpnB2/2b5/Rr4N1/1pNk3q/1p2R1P1/5P2/8 w - - 0 1)

Strerath, Otto

Recomm., BCF 060. Ty., 1948-1949

2nK1B2/2QpnB2/2b5/Rr4N1/1pNk3q/1p2R1P1/5P2/8

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Qxe5#
    • 1...Rb6
      • 2.Bg7#
      • 2.Qe5#
    • 1...Rb7
      • 2.Bg7#
      • 2.Qe5#
    • 1...Rb8
      • 2.Bg7#
      • 2.Qe5#
    • 1...Bf3
      • 2.Sxf3#
    • 1...Bd5
      • 2.Bg7#
  • Tries
    • 1.Bg7+?
      • 1...Re5
        • 2.Bxe5#
        • 2.Qxe5#
      • 1...Kc5!
    • 1.Qb6+?
      • 1...Rc5
        • 2.Bg7#
        • 2.Qxc5#
      • 1...Rxb6
        • 2.Bg7#
      • 1...Sxb6!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Sxb3#
      • 1...Kc5
        • 2.Sxb3#
      • 1...Rd5
        • 2.Sgf3#
      • 1...Bd5
        • 2.Bg7#
      • 1...Sd5
        • 2.Qe5#
      • 1...b2
        • 2.Sb3#
      • 1...d5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • R(e);N_GUARD::QAB1(G),XR(e)
    • B(f);N_GUARD::S(F),XB(f)
    • B(f);S_CUTR(e)::B(J)
  • Tries
    • Try
      • B(J);CHECK
      • Refutation
        • K(c);P_SPINB(f),P_SPINR(e),S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • R(e);XQ(G)::B(J)
      • Refutation
        • S(i);XQ(G)
  • Actual
    • S(D);
    • Threat
      • S(D),XP(a)
    • Vars
      • K(c);P_SPINB(f),P_SPINR(e),P_SPINS(h),S_FLIGHT::S(D),XP(a)
      • R(e);S_CUTB(f)::S(F)
      • B(f);S_CUTR(e)::B(J)
      • S(h);P_PINS(F),S_CUTR(e)::QAB1(G)
      • P(a);::S(D)
      • P(g);N_GUARD,SBLOCK::S(F)
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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).