MESON Chess Problem Database

Problem Display
PID: 85238 (2b2bK1/4rQn1/2Bp4/1R1p2B1/2Nk2rR/3p4/3N4/8 w - - 0 1)

Croes, Govert Aliander

Zwiazek Problemistow, 1947

2b2bK1/4rQn1/2Bp4/1R1p2B1/2Nk2rR/3p4/3N4/8

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Bf6#
      • 2.Qf6#
    • 1...Rb7
      • 2.Bf6#
      • 2.Qf6#
    • 1...Rc7
      • 2.Bf6#
      • 2.Qf6#
    • 1...Rd7
      • 2.Bf6#
      • 2.Qf6#
    • 1...Be6
      • 2.Bf6#
    • 1...Se6
      • 2.Qf6#
    • 1...dxc4
      • 2.Qxc4#
  • Tries
    • 1.Qf2+?
      • 1...Re3
        • 2.Bf6#
      • 1...Kc3!
  • Keys
    • 1.Rb3!
      • threat
        • 2.Qxd5#
      • 1...Kc5
        • 2.Qxd5#
      • 1...Rxf7
        • 2.Be3#
      • 1...dxc4
        • 2.Qd5#
      • 1...Re5
        • 2.Qa7#
      • 1...Re6
        • 2.Qa7#
      • 1...Be6
        • 2.Be3#
      • 1...Se6
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(h);P_PINQ(G),S_CUTR(f)::B(E)
    • S(g);P_PINB(E),S_CUTR(f)::QAB(G)
    • P(d);OGATE,XS(B)::QAR1(G),XP(d)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • R(f);N_SPINR(c),P_SPINR(f)::B(E)
      • Refutation
        • K(b);N_SPINR(c),S_FLIGHT
  • Actual
    • R(D);
    • Threat
      • QAR1(G),XP(d)
    • Vars
      • K(b);N_SPINR(c),S_FLIGHT::QAR1(G),XP(d)
      • R(f);N_GUARD,XQ(G)::B(E)
      • P(d);XS(B)::QAR1(G)
      • R(f);OGATE::QAB(G)
      • B(h);P_PINQ(G),S_CUTR(f)::B(E)
      • S(g);P_PINB(E),S_CUTR(f)::QAB(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).