MESON Chess Problem Database

Problem Display
PID: 52914 (3R4/6b1/2p1b2r/1N6/1n1Pk1p1/6Pp/1N3P1K/1n1Q4 w - - 0 1)

Ekholm, Edvin Alexander

3rd Prize, Source?, 0000

3R4/6b1/2p1b2r/1N6/1n1Pk1p1/6Pp/1N3P1K/1n1Q4

#2

8 + 9

117 Suomen Shakki 1926

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Qxg4#
    • 1...Bb3
      • 2.Qxg4#
    • 1...Bc4
      • 2.Qxg4#
    • 1...Bd5
      • 2.Qxg4#
    • 1...Bf5
      • 2.Qe2#
      • 2.Qh1#
    • 1...Bf7
      • 2.Qxg4#
    • 1...Bg8
      • 2.Qxg4#
    • 1...Sa2
      • 2.Qd3#
    • 1...Sc2
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Sd5
      • 2.Sd6#
      • 2.Qd3#
    • 1...Sa6
      • 2.Qd3#
  • Tries
    • 1.Qe1+?
      • 1...Kf3
        • 2.Qe3#
      • 1...Kf5!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Qh1#
      • 1...Kxd5
        • 2.Qh1#
      • 1...Bxd5
        • 2.Qxg4#
      • 1...Sxd5
        • 2.Sd6#
        • 2.Qd3#
      • 1...cxd5
        • 2.Sd6#
      • 1...Be5
        • 2.Rxe5#
      • 1...Rf6
        • 2.Re5#
      • 1...Sd2
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 9
  • Sets
    • B(g);N_GUARD::QAR2(A),XP(e)
    • S(c);N_GUARD::QAB1(A)
    • S(c);N_GUARD::QAB1(A),XS(c)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR1(A)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • R(H);
    • Threat
      • QAB(A)
    • Vars
      • K(d);S_FLIGHT,XR(H)::QAB(A)
      • B(g);N_GUARD,SBLOCK,XR(H)::QAR2(A),XP(e)
      • P(f);SBLOCK,XR(H)::S(G)
      • B(i);N_GUARD,P_PINP(E)::R1(H),XB(i)
      • R(h);S_CUTB(i)::R1(H)
      • S(a);N_GUARD::S(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).