Problem Display
PID: 252357 (3N4/B2p4/3p4/1pnk1b2/1Rp2P2/3PK3/7Q/2R5 w - - 0 1)

Crusats, Joaquim

SEPA-80 JT (Problemas), 2013-2014

3N4/B2p4/3p4/1pnk1b2/1Rp2P2/3PK3/7Q/2R5

#2

8 + 7


SOLUTION


  • SOUND
  • Sets
    • 1...cxd3
      • 2.Rd4#
    • 1...c3
      • 2.Rd4#
  • Tries
    • 1.Rxb5?
      • threat
        • 2.dxc4#
      • 1...cxd3
        • 2.Qa2#
      • 1...c3
        • 2.Qa2#
      • 1...Bxd3!
    • 1.Qh1+?
      • 1...Se4
        • 2.Rxb5#
      • 1...Be4!
    • 1.Qd2?
      • threat
        • 2.dxc4#
      • 1...Sxd3
        • 2.Rxb5#
      • 1...cxd3
        • 2.Rd4#
      • 1...c3
        • 2.Rd4#
      • 1...Bxd3!
    • 1.Qg2+?
      • 1...Se4
        • 2.Rxb5#
      • 1...Be4!
  • Keys
    • 1.Rd1!
      • threat
        • 2.dxc4#
      • 1...Bxd3
        • 2.Qh5#
      • 1...Sxd3
        • 2.Rxb5#
      • 1...cxd3
        • 2.Rd4#
      • 1...c3
        • 2.Rd4#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATE,XP(C)::R1(E)
    • P(a);OGATE::R1(E)
  • Tries
    • Try
      • R(E);P_PINS(c),XP(b)
      • Threat
        • P(C),XP(a)
      • Vars
        • P(a);OGATEB,XP(C)::QAB(B)
        • P(a);OGATEB::QAB(B)
      • Refutation
        • B(e);XP(C)
    • Try
      • Q(B);CHECK
      • Vars
        • S(c);P_SPINS(c),S_CUTB(e)::R(E),XP(b)
      • Refutation
        • B(e);P_SPINB(e)
    • Try
      • Q(B);
      • Threat
        • QAR(B)+P(C)DCHECK,XP(a)
      • Vars
        • S(c);OGATEB,P_SPINS(c),XP(C)::R(E),XP(b)
        • P(a);OGATE,P_SPINP(a),XP(C)::R1(E)
        • P(a);OGATE::R1(E)
      • Refutation
        • B(e);P_SPINB(e),XP(C)
    • Try
      • Q(B);CHECK
      • Vars
        • S(c);P_SPINS(c),S_CUTB(e)::R(E),XP(b)
      • Refutation
        • B(e);P_SPINB(e)
  • Actual
    • R(A);
    • Threat
      • R(A)+P(C)DCHECK,XP(a)
    • Vars
      • B(e);OGATEB,P_SPINB(e),XP(C)::QAR(B)
      • S(c);OGATEB,P_SPINS(c),XP(C)::R(E),XP(b)
      • P(a);OGATE,P_SPINP(a),XP(C)::R1(E)
      • P(a);OGATE::R1(E)


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).