MESON Chess Problem Database

Problem Display
PID: 45493 (1BN1R3/5p2/K1p2p2/p1br1kpP/Q1p5/q1p4P/2b1R1N1/1B6 w - - 0 1)

Mach, RL

Recomm., BCF 051. Ty., 1945-1946

1BN1R3/5p2/K1p2p2/p1br1kpP/Q1p5/q1p4P/2b1R1N1/1B6

#2

10 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Se3#
    • 1...Rd6
      • 2.Se7#
    • 1...Be4
      • 2.Bxe4#
    • 1...Bf2
      • 2.Rxf2#
    • 1...Be3
      • 2.Sxe3#
    • 1...Bb4
      • 2.Se3#
      • 2.Rf2#
    • 1...Bd4
      • 2.Bxc2#
      • 2.Qxc2#
    • 1...Bf8
      • 2.Se3#
      • 2.Rf2#
  • Keys
    • 1.Qxc6!
      • threat
        • 2.Qxd5#
      • 1...Rd3
        • 2.Qe4#
      • 1...Rd1
        • 2.Qf3#
      • 1...Rd2
        • 2.Qf3#
      • 1...Rd4
        • 2.Se3#
      • 1...Re5
        • 2.Qf3#
      • 1...Rd6
        • 2.Se7#
      • 1...Rd7
        • 2.Qf3#
        • 2.Qxd7#
      • 1...Rd8
        • 2.Qf3#
      • 1...Bd4
        • 2.Bxc2#
      • 1...Bd6
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 3
  • Sets
    • R(g);S_CUTB(f)::S(C)
    • R(g);S_CUTB(f)::S(I)
    • B(a);OGATE::B(A),XB(a)
    • B(f);N_GUARD::R(B),XB(f)
    • B(f);N_GUARD::S(C),XB(f)
  • Actual
    • Q(E);XP(j)
    • Threat
      • QAR2(E),XR(g)
    • Vars
      • R(g);N_SPINB(a),OGATE::QAB1(E)
      • R(g);OGATE::QAR2(E)
      • R(g);S_CUTB(f)::S(C)
      • R(g);P_PINQ(E),S_CUTB(f)::S(I)
      • B(f);S_CUTR(g)::B(A),XB(a)
      • B(f);S_CUTR(g)::QAB(E)
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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).