MESON Chess Problem Database

Problem Display
PID: 73847 (2r2q2/5p2/3p1R2/Rn1nk1P1/6P1/2pQ2N1/3N4/K5bb w - - 0 1)

Knoop, AM

Tijdschrift vd KNSB, 1938

2r2q2/5p2/3p1R2/Rn1nk1P1/6P1/2pQ2N1/3N4/K5bb

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Sxc4#
    • 1...Ra8
      • 2.Sc4#
    • 1...Rb8
      • 2.Sc4#
    • 1...Rd8
      • 2.Sc4#
    • 1...Re8
      • 2.Sc4#
    • 1...Bd4
      • 2.Qf5#
    • 1...Bc5
      • 2.Sc4#
    • 1...Bf3
      • 2.Sxf3#
    • 1...Be4
      • 2.Qxe4#
    • 1...Sbc7
      • 2.Sc4#
    • 1...Sdc7
      • 2.Sc4#
    • 1...Se7
      • 2.Qxd6#
  • Tries
    • 1.Sb3?
      • threat
        • 2.Qf5#
      • 1...Be4
        • 2.Qxe4#
      • 1...Se3
        • 2.Qd4#
      • 1...Se7
        • 2.Qxd6#
      • 1...Sd4!
  • Keys
    • 1.Se2!
      • threat
        • 2.Qf5#
      • 1...Be4
        • 2.Qxe4#
      • 1...Sd4
        • 2.Qg3#
      • 1...Se3
        • 2.Qd4#
      • 1...Se7
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 10
  • Sets
    • R(i);N_GUARD::S(B),XR(i)
    • R(i);N_GUARD,P_PINR(F)::S(B)
    • R(i);N_GUARD::S(B)
    • B(a);SBLOCK::QAR1(C)
    • B(a);S_CUTR(i)::S(B)
    • B(b);N_GUARD::S(B),XB(b)
    • B(b);N_GUARD::QAR1(C),XB(b)
    • S(d);P_SPINS(e),S_CUTR(i)::S(B)
    • S(e);P_SPINS(d),S_CUTR(i)::S(B)
    • S(e);OGATE,P_SPINS(d)::QAB1(C),XP(g)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR1(C)
      • Vars
        • B(b);N_GUARD::QAR1(C),XB(b)
        • S(e);P_SPINS(d),S_CUTB(a)::QAB1(C)
        • S(e);OGATE,P_SPINS(d)::QAB1(C),XP(g)
      • Refutation
        • S(d);P_SPINS(e)
  • Actual
    • S(D);
    • Threat
      • QAR1(C)
    • Vars
      • B(b);N_GUARD::QAR1(C),XB(b)
      • S(d);P_SPINS(e)::QAB(C)
      • S(e);P_SPINS(d),S_CUTB(a)::QAB1(C)
      • S(e);OGATE,P_SPINS(d)::QAB1(C),XP(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).