MESON Chess Problem Database

Problem Display
PID: 100968 (Q5K1/P2p2R1/3rp3/r6p/p5B1/1b2PP2/2p3kp/b3R2N w - - 0 1)

Godfrey, Frederick Earle

Good Companions (October), 1918

Q5K1/P2p2R1/3rp3/r6p/p5B1/1b2PP2/2p3kp/b3R2N

#2

9 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Bf5#
    • 1...e5+
      • 2.Be6#
  • Tries
    • 1.Bxe6+?
      • 1...Rg5
        • 2.Rxg5#
      • 1...Bxg7!
  • Keys
    • 1.Qe4!
      • threat
        • 2.f4#
      • 1...e5+
        • 2.Be6#
      • 1...hxg4
        • 2.Qxg4#
      • 1...Re5
        • 2.Bf5#
      • 1...Rd4
        • 2.Bf5#
      • 1...Bd5
        • 2.Qxc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(g);S_CUTB(a)::R(G)+B(E)
    • P(j);CHECK,S_CUTB(a),S_CUTR(g)::R(G)+B(E)
  • Tries
    • Try
      • B(E);CHECK,P_SPINB(E),XP(j)
      • Vars
        • R(g);N_GUARD,P_PINR(G),P_SPINR(g)::R(G),XR(g)
      • Refutation
        • B(a);XR(G)
  • Actual
    • Q(H);
    • Threat
      • QAB(H)+P(D)
    • Vars
      • P(j);CHECK,S_CUTB(a),S_CUTR(g)::R(G)+B(E)
      • P(h);OGATE,P_SPINP(h),XB(E)::QAR2(H),XP(h)
      • R(g);S_CUTB(a)::R(G)+B(E)
      • R(i);S_CUTB(a)::R(G)+B(E)
      • B(e);N_GUARD,S_CUTR(i)::QAR(H),XP(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).