Problem Display
PID: 84614 (2N5/b1R1p3/2P5/1nkP4/pp3N2/1Pp2PQp/5Kb1/4RBB1 w - - 0 1)

Szwedowski, Leopold Mieczyslaw

Problemista, 1971

2N5/b1R1p3/2P5/1nkP4/pp3N2/1Pp2PQp/5Kb1/4RBB1

#2

12 + 9


6490 yacpdb 2009

SOLUTION


  • SOUND
  • Tries
    • 1.Sd3+?
      • 1...Kd4
        • 2.Qe5#
      • 1...Kxd5+!
    • 1.Bc4?
      • threat
        • 2.Se6#
      • 1...Kd4
        • 2.Se6#
      • 1...Sxc7
        • 2.Ke2#
      • 1...Sd4
        • 2.Sd3#
      • 1...e6
        • 2.Sxe6#
      • 1...axb3!
    • 1.Rd1?
      • threat
        • 2.Se6#
      • 1...Sxc7
        • 2.Ke1#
      • 1...e6
        • 2.Sxe6#
      • 1...Sd4!
    • 1.Qg5?
      • threat
        • 2.Se6#
      • 1...Kd4
        • 2.Ke2#
        • 2.Kg3#
        • 2.Se6#
      • 1...Sxc7
        • 2.Kg3#
      • 1...Sd4
        • 2.Qxe7#
      • 1...e6
        • 2.Sxe6#
      • 1...e5!
  • Keys
    • 1.Re5!
      • threat
        • 2.Se6#
      • 1...Kd4
        • 2.Se6#
      • 1...Sxc7
        • 2.Ke1#
      • 1...Sd4
        • 2.d6#
      • 1...e6
        • 2.Sxe6#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(g);S_FLIGHT::QAB1(G)
      • Refutation
        • K(g);CHECK,P-FLIGHT,XP(I)
    • Try
      • B(B);
      • Threat
        • S(H)
      • Vars
        • K(g);S_FLIGHT::S(H)
        • S(f);N_GUARD,XR(K)::B(C)+K(D)
        • S(f);SBLOCK::S(H)
        • P(i);::S(H),XP(i)
      • Refutation
        • P(d);XP(E)
    • Try
      • R(A);
      • Threat
        • S(H)
      • Vars
        • S(f);N_GUARD,XR(K)::B(C)+K(D)
        • P(i);::S(H),XP(i)
      • Refutation
        • S(f);
    • Try
      • Q(G);
      • Threat
        • S(H)
      • Vars
        • S(f);N_GUARD,XR(K)::B(C)+K(D)
        • S(f);N_GUARD,SBLOCK::QAB(G),XP(i)
        • P(i);::S(H),XP(i)
      • Refutation
        • P(i);
  • Actual
    • R(A);
    • Threat
      • S(H)
    • Vars
      • K(g);S_FLIGHT::S(H)
      • S(f);N_GUARD,XR(K)::B(C)+K(D)
      • S(f);SBLOCK::R(A)+P(I)
      • P(i);::S(H),XP(i)


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).