Problem Display
PID: 5954 (3Q2nq/4p2r/5p1p/1pKN3r/4R2b/2P2pp1/NR6/1B1k4 w - - 0 1)

ten Cate, Pieter

2/3 Prize, 64 Shakhmatnoe obozrenie, 1926

3Q2nq/4p2r/5p1p/1pKN3r/4R2b/2P2pp1/NR6/1B1k4

#2

8 + 12


SOLUTION


  • SOUND
  • Sets
    • 1...Rxd5+
      • 2.Qxd5#
    • 1...Bg5
      • 2.Sf4#
    • 1...f5
      • 2.Sf6#
    • 1...e5
      • 2.Se7#
  • Tries
    • 1.Rbe2?
      • threat
        • 2.Bc2#
      • 1...Rxd5+
        • 2.Qxd5#
      • 1...fxe2!
    • 1.Rf2?
      • threat
        • 2.Bc2#
      • 1...Rxd5+
        • 2.Qxd5#
      • 1...gxf2!
    • 1.Ree2?
      • threat
        • 2.Rbd2#
      • 1...Rxd5+
        • 2.Qxd5#
      • 1...Bg5
        • 2.Se3#
        • 2.Sf4#
      • 1...fxe2!
  • Keys
    • 1.Rbb4!
      • threat
        • 2.Rbd4#
      • 1...Rxd5+
        • 2.Qxd5#
      • 1...Kd2
        • 2.Rbd4#
      • 1...Bg5
        • 2.Sf4#
      • 1...f5
        • 2.Sf6#
      • 1...e5
        • 2.Se7#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(f);CHECK,OGATE,P_SPINR(f),XS(G)::QAR(H),XR(f)
    • B(d);N_PINS(G)::QAR(H)+S(G)
    • P(g);N_PINS(G)::QAR(H)+S(G)
    • P(i);N_PINS(G)::QAR(H)+S(G)
  • Tries
    • Try
      • R(C);
      • Threat
        • B(A)
      • Vars
        • R(f);CHECK,OGATE,P_SPINR(f),XS(G)::QAR(H),XR(f)
      • Refutation
        • P(b);XR(C)
    • Try
      • R(C);
      • Threat
        • B(A)
      • Vars
        • R(f);CHECK,OGATE,P_SPINR(f),XS(G)::QAR(H),XR(f)
      • Refutation
        • P(c);XR(C)
    • Try
      • R(E);
      • Threat
        • R1(C)
      • Vars
        • R(f);CHECK,OGATE,P_SPINR(f),XS(G)::QAR(H),XR(f)
      • Refutation
        • P(b);XR(E)
  • Actual
    • R(C);
    • Threat
      • R(C)
    • Vars
      • R(f);CHECK,OGATE,P_SPINR(f),XS(G)::QAR(H),XR(f)
      • K(a);P-FLIGHT::R(C)
      • B(d);N_PINS(G)::QAR(H)+S(G)
      • P(g);N_PINS(G)::QAR(H)+S(G)
      • P(i);N_PINS(G)::QAR(H)+S(G)


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).