Problem Display
PID: 267752 (n3N3/K1p2R2/1pkp4/8/1pB2p2/1N1P1P2/P1p1P3/2Q5 w - - 0 1)

Strzala, Kazimierz

Probleemblad, 1985

n3N3/K1p2R2/1pkp4/8/1pB2p2/1N1P1P2/P1p1P3/2Q5

#2

10 + 8


3713 Snap 2022

SOLUTION


  • SOUND
  • Tries
    • 1.Ka6?
      • 1...d5
        • 2.Bb5#
      • 1...b5!
    • 1.Sa5+?
      • 1...Kc5
        • 2.Qg1#
      • 1...bxa5!
    • 1.Sf6?
      • 1...b5
        • 2.Bd5#
      • 1...d5!
    • 1.Ba6?
      • 1...b5
        • 2.Bb7#
      • 1...d5
        • 2.Qxc2#
      • 1...Kd5!
    • 1.Be6?
      • 1...b5
        • 2.Qxc2#
      • 1...d5
        • 2.Bd7#
      • 1...Kb5!
    • 1.a4?
      • 1...b5
        • 2.axb5#
      • 1...d5
        • 2.Bb5#
      • 1...bxa4 ep!
    • 1.e4?
      • 1...b5
        • 2.Bd5#
      • 1...d5
        • 2.exd5#
      • 1...fxe4 ep!
  • Keys
    • 1.Qxc2!
      • 1...b5
        • 2.Be6#
      • 1...d5
        • 2.Ba6#

Anticipated by 70743(1979)

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(H);P-FLIGHT
      • Vars
        • P(f);SBLOCK::B(G)
      • Refutation
        • P(d);
    • Try
      • S(D);CHECK
      • Vars
        • K(e);P-FLIGHT,S_CUTP(d)::QAB(A)
      • Refutation
        • P(d);XS(D)
    • Try
      • S(J);
      • Vars
        • P(d);SBLOCK::B(G)
      • Refutation
        • P(f);
    • Try
      • B(G);P_PINP(a)
      • Vars
        • P(d);SBLOCK::B(G)
        • P(f);SBLOCK::QAR(A),XP(a)
      • Refutation
        • K(e);N_SPINP(a),S_FLIGHT
    • Try
      • B(G);P_PINP(a)
      • Vars
        • P(d);SBLOCK::QAR(A),XP(a)
        • P(f);SBLOCK::B(G)
      • Refutation
        • K(e);N_SPINP(a),S_FLIGHT
    • Try
      • P(B);
      • Vars
        • P(d);OGATE::P(B),XP(d)
        • P(f);SBLOCK::B(G)
      • Refutation
        • P(b);EP,XP(B)
    • Try
      • P(C);
      • Vars
        • P(d);SBLOCK::B(G)
        • P(f);OGATE::P(C),XP(f)
      • Refutation
        • P(c);EP,XP(C)
  • Actual
    • Q(A);XP(a)
    • Vars
      • P(d);SBLOCK::QAR(A)+B(G)
      • P(f);SBLOCK::QAR(A)+B(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).