MESON Chess Problem Database

Problem Display
PID: 101168 (3r3Q/2pN4/2b1RP1p/1p5K/nB1kPRp1/1P3P2/3P1P2/n4BN1 w - - 0 1)

Opdenoordt, Joseph J

Good Companions (November Pageant Ty.), 1916

3r3Q/2pN4/2b1RP1p/1p5K/nB1kPRp1/1P3P2/3P1P2/n4BN1

#2

14 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd7
      • 2.f7#
    • 1...Sb2
      • 2.Bc3#
      • 2.Bc5#
    • 1...Sc3
      • 2.Bxc3#
      • 2.Bc5#
      • 2.dxc3#
    • 1...Sc5
      • 2.Bc3#
      • 2.Bxc5#
    • 1...Sb6
      • 2.Bc3#
      • 2.Bc5#
    • 1...gxf3
      • 2.Sxf3#
  • Tries
    • 1.Se5?
      • threat
        • 2.Se2#
        • 2.Sxc6#
      • 1...Bxe4
        • 2.Qxd8#
      • 1...gxf3
        • 2.Sgxf3#
        • 2.Sexf3#
        • 2.Sxc6#
      • 1...Rd5
        • 2.Se2#
      • 1...Rd6
        • 2.Se2#
      • 1...Bd5
        • 2.Se2#
      • 1...Bb7
        • 2.Se2#
      • 1...Bd7
        • 2.Se2#
      • 1...Ba8
        • 2.Se2#
      • 1...Sc3
        • 2.Sxc6#
        • 2.dxc3#
      • 1...Be8+!
    • 1.Rd6+?
      • 1...Bd5
        • 2.Rxd5#
        • 2.exd5#
        • 2.e5#
      • 1...cxd6!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Se2#
      • 1...Rd5+
        • 2.e5#
      • 1...Be8+
        • 2.f7#
      • 1...Bxe4
        • 2.Qxd8#
      • 1...Sxb3
        • 2.Sxb3#
      • 1...Sxc5
        • 2.Bc3#
      • 1...gxf3
        • 2.Sxf3#
      • 1...Sc3
        • 2.dxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(i);N_GUARD,XS(M)::QAB(N)+P(L)
    • P(d);XP(F)::S(B),XP(d)
  • Tries
    • Try
      • S(M);
      • Threat
        • DUALS(2)
      • Vars
        • B(f);N_GUARD,P_SPINB(f),XP(H)::QAR(N),XR(i)
        • R(i);P_PINS(M)::S(B)
        • R(i);::S(B)
        • B(f);::S(B)
      • Refutation
        • B(f);CHECK
    • Try
      • R(K);CHECK
      • Refutation
        • P(h);XR(K)
  • Actual
    • S(M);
    • Threat
      • S(B)
    • Vars
      • R(i);CHECK,SBLOCK,S_CUTB(f)::R(I)+P(H)
      • B(f);CHECK,S_CUTR(i)::QAB(N)+P(L)
      • B(f);N_GUARD,P_SPINB(f),XP(H)::QAR(N),XR(i)
      • S(a);XP(E)::S(M),XS(a)
      • S(b);N_GUARD,SBLOCK,XS(M)::B(G)
      • P(d);XP(F)::S(B),XP(d)
      • S(b);OGATE::P(C),XS(b)
HTML5 logo

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).