MESON Chess Problem Database

Problem Display
PID: 245755 (1rrqbBn1/1ppkbp1R/R3N1p1/2P3Q1/1N1P1P1K/7B/8/8 w - - 0 1)

Wrobel, Marian

Shakhmaty i Shashki, 1931

1rrqbBn1/1ppkbp1R/R3N1p1/2P3Q1/1N1P1P1K/7B/8/8

#2

11 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc5
      • 2.Sxc5#
      • 2.Sxd8#
    • 1...Bxg5+
      • 2.Sxg5#
    • 1...Bd6
      • 2.Sxd8#
    • 1...Bf6
      • 2.Sg7#
    • 1...Bxf8
      • 2.Sxd8#
      • 2.Sxf8#
    • 1...fxe6
      • 2.Bxe6#
    • 1...f6
      • 2.Qd5#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Se5#
      • 1...Bxg5+
        • 2.Sxg5#
      • 1...Bd6
        • 2.Sexd8#
      • 1...Bf6
        • 2.Sg7#
        • 2.Sexd8#
      • 1...f6
        • 2.Qd5#
      • 1...bxc6!
    • 1.Rd6+?
      • 1...Bxd6
        • 2.Sxd8#
      • 1...cxd6!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Se5#
      • 1...Bxg5+
        • 2.Sxg5#
      • 1...Bd6
        • 2.Sxd8#
      • 1...Bf6
        • 2.Sg7#
      • 1...f6
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • B(e);CHECK,P_SPINP(f),XQ(G)::B(A)+S(I),XB(e)
    • B(e);P_SPINP(f)::B(A)+S(I),XQ(i)
    • B(e);P_SPINP(f)::B(A)+S(I)
    • P(f);OGATE,P_SPINB(e),P_SPINP(f),XS(I)::B(A),XP(f)
    • P(f);N_PINQ(G),P_SPINB(e)::QAR2(G)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • B(e);CHECK,P_SPINP(f),XQ(G)::B(A)+S(I),XB(e)
        • B(e);P_SPINP(f)::B(A)+S(I),XQ(i)
        • P(f);N_PINQ(G),P_SPINB(e)::QAR2(G)
      • Refutation
        • P(b);XS(B)
    • Try
      • R(H);CHECK
      • Vars
        • B(e);P_SPINP(f),XR(H)::B(A)+S(I),XQ(i)
      • Refutation
        • P(c);XR(H)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • B(e);CHECK,P_SPINP(f),XQ(G)::B(A)+S(I),XB(e)
      • B(e);P_SPINP(f)::B(A)+S(I),XQ(i)
      • B(e);P_SPINP(f)::B(A)+S(I)
      • P(f);N_PINQ(G),P_SPINB(e)::QAR2(G)
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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).