MESON Chess Problem Database

Problem Display
PID: 225859 (2R2nn1/8/8/3kP1p1/1p4B1/b3Kp1p/3p1B1Q/R7 w - - 0 1)

Sindler, Ivan

Praca, 1951

2R2nn1/8/8/3kP1p1/1p4B1/b3Kp1p/3p1B1Q/R7

#2

7 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Ra5#
    • 1...Bb2
      • 2.Ra5#
    • 1...Se6
      • 2.Bxf3#
    • 1...d1Q
      • 2.Rxd1#
    • 1...d1S+
      • 2.Rxd1#
    • 1...d1B
      • 2.Rxd1#
    • 1...d1R
      • 2.Rxd1#
  • Tries
    • 1.Qf4?
      • threat
        • 2.Qd4#
        • 2.Qe4#
      • 1...d1S+
        • 2.Rxd1#
      • 1...d1Q
        • 2.Rxd1#
        • 2.Qe4#
      • 1...d1R
        • 2.Rxd1#
        • 2.Qe4#
      • 1...Bb2
        • 2.Ra5#
        • 2.Qe4#
      • 1...Se6
        • 2.Bxf3#
        • 2.Qe4#
      • 1...Sf6
        • 2.Qd4#
      • 1...gxf4+!
  • Keys
    • 1.Bg3!
      • threat
        • 2.Qxd2#
      • 1...d1S+
        • 2.Rxd1#
      • 1...d1Q
        • 2.Rxd1#
      • 1...d1B
        • 2.Rxd1#
        • 2.Qd2#
      • 1...d1R
        • 2.Rxd1#
      • 1...Bc1
        • 2.Ra5#
      • 1...Bb2
        • 2.Ra5#
      • 1...Se6
        • 2.Bxf3#
      • 1...f2
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(b);OGATE::R(A)
    • S(h);SBLOCK::B(E),XP(c)
    • P(a);OGATEB::R(A),XQ(a)
    • P(a);CHECK,OGATEB::R(A),XS(a)
    • P(a);OGATEB::R(A),XB(a)
    • P(a);OGATEB::R(A),XR(a)
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);CHECK,OGATEB::R(A),XS(a)
        • S(i);::QAR1(C)
      • Refutation
        • P(g);CHECK,XQ(C)
  • Actual
    • B(B);
    • Threat
      • QAR(C),XP(a)
    • Vars
      • P(a);CHECK,OGATEB::R(A),XS(a)
      • P(a);OGATEB::R(A),XQ(a)
      • P(a);OGATEB::R(A),XR(a)
      • B(b);OGATE::R(A)
      • S(h);SBLOCK::B(E),XP(c)
      • P(c);OGATEB::QAB(C)
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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).