Problem Display
PID: 237785 (8/8/6p1/2K5/3NbR2/1p1pk1P1/1RP1p2p/4Qn1r w - - 0 1)

Goldschmeding, Cornelis

Arbejder-Skak, 1953

8/8/6p1/2K5/3NbR2/1p1pk1P1/1RP1p2p/4Qn1r

#2

7 + 9


15148 Sadier Collection 2021

SOLUTION


  • SOUND
  • Sets
    • 1...Sd2
      • 2.Qf2#
    • 1...dxc2
      • 2.Qxe2#
    • 1...d2
      • 2.Qf2#
      • 2.Qxe2#
  • Tries
    • 1.Rxb3?
      • threat
        • 2.Qxe2#
      • 1...Bf3
        • 2.Rxd3#
      • 1...Sxg3!
    • 1.cxb3?
      • threat
        • 2.Qf2#
      • 1...d2
        • 2.Qxe2#
      • 1...Bf3!
    • 1.c3?
      • threat
        • 2.Qf2#
      • 1...d2
        • 2.Qxe2#
      • 1...Bf3!
    • 1.c4?
      • threat
        • 2.Qf2#
      • 1...d2
        • 2.Qxe2#
      • 1...Bf3!
  • Keys
    • 1.cxd3!
      • threat
        • 2.Qxe2#
      • 1...Kxd3
        • 2.Rxb3#
      • 1...Bxd3
        • 2.Qf2#
      • 1...Sxg3
        • 2.Qd2#
      • 1...Bf3
        • 2.Rxf3#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(a);SBLOCK::QAB1(A)
    • P(f);N_GUARD,XP(C)::QAR1(A),XP(c)
  • Tries
    • Try
      • R(B);XP(e)
      • Threat
        • QAR1(A),XP(c)
      • Vars
        • B(h);N_GUARD::R1(B),XP(f)
      • Refutation
        • S(a);XP(D)
    • Try
      • P(C);XP(e)
      • Threat
        • QAB1(A)
      • Vars
        • P(f);N_GUARD::QAR1(A),XP(c)
      • Refutation
        • B(h);
    • Try
      • P(C);
      • Threat
        • QAB1(A)
      • Vars
        • P(f);N_GUARD::QAR1(A),XP(c)
      • Refutation
        • B(h);
    • Try
      • P(C);
      • Threat
        • QAB1(A)
      • Vars
        • P(f);N_GUARD::QAR1(A),XP(c)
      • Refutation
        • B(h);
  • Actual
    • P(C);XP(f)
    • Threat
      • QAR1(A),XP(c)
    • Vars
      • K(g);N_SPINP(c),OGATEB,P-FLIGHT,XP(C)::R(B),XP(e)
      • B(h);SBLOCK,XP(C)::QAB1(A)
      • S(a);N_GUARD,XP(D)::QAB1(A)
      • B(h);N_GUARD::R1(F),XB(h)


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).