MESON Chess Problem Database

Problem Display
PID: 82492 (8/8/8/8/Nr2nQ1K/N7/b2PB3/B1k5 w - - 0 1)

Havel, Miroslav

Parallele 50, 1947

8/8/8/8/Nr2nQ1K/N7/b2PB3/B1k5

#2

7 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Bxb2#
    • 1...Rc4
      • 2.Bb2#
    • 1...Rd4
      • 2.Bb2#
    • 1...Bb3
      • 2.Bb2#
    • 1...Sf2
      • 2.d4#
    • 1...Sc3
      • 2.d4#
    • 1...Sg3
      • 2.d4#
    • 1...Sc5
      • 2.d4#
    • 1...Sg5
      • 2.d4#
    • 1...Sd6
      • 2.d4#
    • 1...Sf6
      • 2.d4#
  • Keys
    • 1.Bc3!
      • threat
        • 2.Qf1#
      • 1...Sxd2
        • 2.Bxd2#
      • 1...Sxc3
        • 2.d4#
      • 1...Bb3
        • 2.Bb2#
      • 1...Sf2
        • 2.d4#
      • 1...Sg3
        • 2.d4#
      • 1...Sc5
        • 2.d4#
      • 1...Sg5
        • 2.d4#
      • 1...Sd6
        • 2.d4#
      • 1...Sf6
        • 2.d4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(c);N_GUARD::B(A),XR(c)
    • R(c);N_GUARD::B(A)
    • B(b);S_CUTR(c)::B(A)
    • S(d);N_GUARD,P_PINQ(F)::QAB(F)+P(B)
  • Actual
    • B(A);
    • Threat
      • QAR(F)
    • Vars
      • S(d);OGATE,P_PINQ(F),P_SPINS(d),XP(B)::B(A),XS(d)
      • S(d);N_GUARD,P_PINQ(F),XB(A)::QAB(F)+P(B)
      • B(b);S_CUTR(c)::B(A)
      • S(d);N_GUARD,P_PINQ(F)::QAB(F)+P(B)
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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).